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=Solar energy = From Wikipedia, the free encyclopedia  //This article is about all uses of solar energy. For the journal, see [|Solar Energy Journal]. For generation of electricity using solar energy, see [|Solar power] .//  <span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"> <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;">  [|Nellis Solar Power Plant] in the United States, one of the largest [|photovoltaic] power plants in [|North America]. || [|Biomass] [|Hydroelectricity] [|Tidal power] [|Wave power] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Wind power] || <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">**Solar energy**, radiant <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|light] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heat] from the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sun], has been harnessed by humans since <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ancient times] using a range of ever-evolving technologies. Solar <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|radiation], along with secondary solar-powered resources such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|wind] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|wave power] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydroelectricity] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biomass] , account for most of the available <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|renewable energy] on earth. Only a minuscule fraction of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|the available solar energy] is used. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar powered] electrical generation relies on <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heat engines] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaics]. Solar energy's uses are limited only by human ingenuity. A partial list of solar applications includes space heating and cooling through <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar architecture], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|potable water] via <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|distillation] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|disinfection] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|daylighting] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar hot water] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar cooking] , and high temperature process heat for industrial purposes.To harvest the solar energy, the most common way is to use <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar panels]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar technologies are broadly characterized as either <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|passive solar] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|active solar] depending on the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar thermal] collectors to harness the energy. Passive solar techniques include orienting a building to the Sun, selecting materials with favorable <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|thermal mass] or light dispersing properties, and designing spaces that <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|naturally circulate air]. * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1 Energy from the Sun] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Energy from the Sun == //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Insolation] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar radiation] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> About half the incoming solar energy reaches the Earth's surface. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The Earth receives 174 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petawatts] (PW) of incoming solar radiation (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|insolation] ) at the upper<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|atmosphere]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[1]] Approximately 30% is reflected back to space while the rest is absorbed by clouds, oceans and land masses. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|spectrum] of solar light at the Earth's surface is mostly spread across the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|visible] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|near-infrared] ranges with a small part in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|near-ultraviolet]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[2]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Earth's land surface, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oceans] and atmosphere absorb solar radiation, and this raises their temperature. Warm air containing evaporated water from the oceans rises, causing <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|atmospheric circulation] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|convection]. When the air reaches a high altitude, where the temperature is low, water vapor condenses into clouds, which rain onto the Earth's surface, completing the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|water cycle]. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|latent heat] of water condensation amplifies convection, producing atmospheric phenomena such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|wind], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cyclones] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|anti-cyclones]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[3]] Sunlight absorbed by the oceans and land masses keeps the surface at an average temperature of 14 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|°C]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[4]] By <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photosynthesis] green plants convert solar energy into <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|chemical energy], which produces food, wood and the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biomass] from which fossil fuels are derived. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[5]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The total solar energy absorbed by Earth's atmosphere, oceans and land masses is approximately 3,850,000 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|exajoules] (EJ) per year. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]] In 2002, this was more energy in one hour than the world used in one year. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[11]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[12]]  Photosynthesis captures approximately 3,000 EJ per year in biomass. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[8]] The amount of solar energy reaching the surface of the planet is so vast that in one year it is about twice as much as will ever be obtained from all of the Earth's non-renewable resources of coal, oil, natural gas, and mined uranium combined. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[13]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">From the table of resources it would appear that solar, wind or biomass would be sufficient to supply all of our energy needs, however, the increased use of biomass has had a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|negative effect] on global warming and dramatically increased food prices by diverting forests and crops into biofuel production. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[14]] As <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|intermittent resources], solar and wind raise other issues. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar energy can be harnessed in different levels around the world. Depending on a geographical location the closer to the equator the more "potential" solar energy is available. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[15]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Applications of solar technology == <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Average <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|insolation] showing land area (small black dots) required to replace the world primary energy supply with solar electricity. 18 TW is 568 Exajoule (EJ) per year. Insolation for most people is from 150 to 300 W/m 2 or 3.5 to 7.0 kWh/m 2 /day. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar energy refers primarily to the use of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar radiation] for practical ends. However, all renewable energies, other than <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|geothermal] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|tidal], derive their energy from the sun. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar technologies are broadly characterized as either passive or active depending on the way they capture, convert and distribute sunlight. Active solar techniques use photovoltaic panels, pumps, and fans to convert sunlight into useful outputs. Passive solar techniques include selecting materials with favorable thermal properties, designing spaces that naturally circulate air, and referencing the position of a building to the Sun. Active solar technologies increase the supply of energy and are considered <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|supply side] technologies, while passive solar technologies reduce the need for alternate resources and are generally considered demand side technologies. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[16]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Architecture and urban planning ** === //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Passive solar building design] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Urban heat island] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Darmstadt University of Technology] in<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Germany] won the 2007 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Decathlon] in<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Washington, D.C.] with this <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|passive house] designed specifically for the humid and hot subtropical climate. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[17]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Sunlight has influenced building design since the beginning of architectural history. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[18]] Advanced solar architecture and urban planning methods were first employed by the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Greeks] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Chinese], who oriented their buildings toward the south to provide light and warmth. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[19]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The common features of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|passive solar] architecture are orientation relative to the Sun, compact proportion (a low surface area to volume ratio), selective shading (overhangs) and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|thermal mass]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[18]] When these features are tailored to the local climate and environment they can produce well-lit spaces that stay in a comfortable temperature range. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Socrates'] Megaron House is a classic example of passive solar design. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[18]] The most recent approaches to solar design use computer modeling tying together <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar lighting], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heating] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ventilation] systems in an integrated<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar design] package. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[20]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Active solar] equipment such as pumps, fans and switchable windows can complement passive design and improve system performance. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Urban heat islands (UHI) are metropolitan areas with higher temperatures than that of the surrounding environment. The higher temperatures are a result of increased absorption of the Solar light by urban materials such as asphalt and concrete, which have lower <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|albedos] and higher <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heat capacities] than those in the natural environment. A straightforward method of counteracting the UHI effect is to paint buildings and roads white and plant trees. Using these methods, a hypothetical "cool communities" program in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Los Angeles] has projected that urban temperatures could be reduced by approximately 3 °C at an estimated cost of US$1 billion, giving estimated total annual benefits of US$530 million from reduced air-conditioning costs and healthcare savings. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[21]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Agriculture and horticulture ** === <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Greenhouses] like these in the Westland municipality of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Netherlands] grow vegetables, fruits and flowers. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Agriculture] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|horticulture] seek to optimize the capture of solar energy in order to optimize the productivity of plants. Techniques such as timed planting cycles, tailored row orientation, staggered heights between rows and the mixing of plant varieties can improve crop yields. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[22]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[23]]  While sunlight is generally considered a plentiful resource, the exceptions highlight the importance of solar energy to agriculture. During the short growing seasons of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Little Ice Age], French and<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|English] farmers employed fruit walls to maximize the collection of solar energy. These walls acted as thermal masses and accelerated ripening by keeping plants warm. Early fruit walls were built perpendicular to the ground and facing south, but over time, sloping walls were developed to make better use of sunlight. In 1699, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nicolas Fatio de Duillier] even suggested using a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|tracking mechanism] which could pivot to follow the Sun. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[24]] Applications of solar energy in agriculture aside from growing crops include pumping water, drying crops, brooding chicks and drying chicken manure. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[25]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[26]]  More recently the technology has been embraced by vinters, who use the energy generated by solar panels to power grape presses. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[27]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Greenhouses] convert solar light to heat, enabling year-round production and the growth (in enclosed environments) of specialty crops and other plants not naturally suited to the local climate. Primitive greenhouses were first used during Roman times to produce <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cucumbers] year-round for the Roman emperor <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Tiberius]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[28]] The first modern greenhouses were built in Europe in the 16th century to keep exotic plants brought back from explorations abroad. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[29]] Greenhouses remain an important part of horticulture today, and plastic transparent materials have also been used to similar effect in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|polytunnels] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|row covers]. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Solar lighting ** === <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Daylighting features such as this <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oculus] at the top of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pantheon], in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Rome] , Italy have been in use since antiquity. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The history of lighting is dominated by the use of natural light. The Romans recognized a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|right to light] as early as the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|6th century] and English law echoed these judgments with the Prescription Act of 1832. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[30]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[31]]  In the 20th century artificial <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|lighting] became the main source of interior illumination but daylighting techniques and hybrid solar lighting solutions are ways to reduce energy consumption. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Daylighting] systems collect and distribute sunlight to provide interior illumination. This passive technology directly offsets energy use by replacing artificial lighting, and indirectly offsets non-solar energy use by reducing the need for <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|air-conditioning]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[32]] Although difficult to quantify, the use of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|natural lighting] also offers physiological and psychological benefits compared to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|artificial lighting]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[32]] Daylighting design implies careful selection of window types, sizes and orientation; exterior shading devices may be considered as well. Individual features include sawtooth roofs,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|clerestory windows], light shelves, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|skylights] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|light tubes]. They may be incorporated into existing structures, but are most effective when integrated into a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar design] package that accounts for factors such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|glare], heat flux and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|time-of-use]. When daylighting features are properly implemented they can reduce lighting-related energy requirements by 25%. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[33]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hybrid solar lighting] is an <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|active solar] method of providing interior illumination. HSL systems collect sunlight using focusing mirrors that <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|track the Sun] and use <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|optical fibers] to transmit it inside the building to supplement conventional lighting. In single-story applications these systems are able to transmit 50% of the direct sunlight received. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[34]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar lights that charge during the day and light up at dusk are a common sight along walkways. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Although <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|daylight saving time] is promoted as a way to use sunlight to save energy, recent research has been limited and reports contradictory results: several studies report savings, but just as many suggest no effect or even a net loss, particularly when <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|gasoline] consumption is taken into account. Electricity use is greatly affected by geography, climate and economics, making it hard to generalize from single studies. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[35]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Solar thermal ** === //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar thermal energy] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar thermal technologies can be used for water heating, space heating, space cooling and process heat generation. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[36]] ====<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 15px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Water heating ** ==== //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar hot water] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar combisystem] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Solar water heaters facing the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sun] to maximize gain. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar hot water systems use sunlight to heat water. In low geographical latitudes (below 40 degrees) from 60 to 70% of the domestic hot water use with temperatures up to 60 °C can be provided by solar heating systems. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[37]] The most common types of solar water heaters are evacuated tube collectors (44%) and glazed flat plate collectors (34%) generally used for domestic hot water; and unglazed plastic collectors (21%) used mainly to heat swimming pools. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[38]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">As of 2007, the total installed capacity of solar hot water systems is approximately 154 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GW]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[39]] China is the world leader in their deployment with 70 GW installed as of 2006 and a long term goal of 210 GW by 2020. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[40]] Israel and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Cyprus] are the per capita leaders in the use of solar hot water systems with over 90% of homes using them. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[41]] In the United States, Canada and Australia heating swimming pools is the dominant application of solar hot water with an installed capacity of 18 GW as of 2005. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[16]] ====<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 15px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Heating, cooling and ventilation ** ==== //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar heating], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thermal mass] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar chimney] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar air conditioning] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Solar House #1 of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Massachusetts Institute of Technology] in the United States, built in 1939, used <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|seasonal thermal storage] for year-round heating. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In the United States, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heating, ventilation and air conditioning] (HVAC) systems account for 30% (4.65 EJ) of the energy used in commercial buildings and nearly 50% (10.1 EJ) of the energy used in residential buildings. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[33]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[42]]  Solar heating, cooling and ventilation technologies can be used to offset a portion of this energy. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Thermal mass is any material that can be used to store heat—heat from the Sun in the case of solar energy. Common thermal mass materials include stone, cement and water. Historically they have been used in arid climates or warm temperate regions to keep buildings cool by absorbing solar energy during the day and radiating stored heat to the cooler atmosphere at night. However they can be used in cold temperate areas to maintain warmth as well. The size and placement of thermal mass depend on several factors such as climate, daylighting and shading conditions. When properly incorporated, thermal mass maintains space temperatures in a comfortable range and reduces the need for auxiliary heating and cooling equipment. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[43]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A solar chimney (or thermal chimney, in this context) is a passive solar ventilation system composed of a vertical shaft connecting the interior and exterior of a building. As the chimney warms, the air inside is heated causing an <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|updraft] that pulls air through the building. Performance can be improved by using glazing and thermal mass materials in a way that mimics greenhouses. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Deciduous] trees and plants have been promoted as a means of controlling solar heating and cooling. When planted on the southern side of a building, their leaves provide shade during the summer, while the bare limbs allow light to pass during the winter. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[44]] Since bare, leafless trees shade 1/3 to 1/2 of incident solar radiation, there is a balance between the benefits of summer shading and the corresponding loss of winter heating. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[45]] In climates with significant heating loads, deciduous trees should not be planted on the southern side of a building because they will interfere with winter solar availability. They can, however, be used on the east and west sides to provide a degree of summer shading without appreciably affecting winter solar gain. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[46]] ====<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 15px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Water treatment ** ==== //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar still], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar water disinfection] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar desalination] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Powered Desalination Unit] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Solar water disinfection in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Indonesia]    <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;">  Small scale solar powered sewerage treatment plant. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar distillation can be used to make <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|saline] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|brackish water] potable. The first recorded instance of this was by 16th century Arab alchemists. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[47]] A large-scale solar distillation project was first constructed in 1872 in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Chilean] mining town of Las Salinas. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[48]] The plant, which had solar collection area of 4,700 m 2, could produce up to 22,700 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|L] per day and operated for 40 years. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[48]] Individual <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|still] designs include single-slope, double-slope (or greenhouse type), vertical, conical, inverted absorber, multi-wick, and multiple effect. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[47]] These stills can operate in passive, active, or hybrid modes. Double-slope stills are the most economical for decentralized domestic purposes, while active multiple effect units are more suitable for large-scale applications. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[47]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar water <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|disinfection] (SODIS) involves exposing water-filled plastic <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|polyethylene terephthalate] (PET) bottles to sunlight for several hours. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[49]] Exposure times vary depending on weather and climate from a minimum of six hours to two days during fully overcast conditions. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[50]] It is recommended by the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|World Health Organization] as a viable method for household water treatment and safe storage. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[51]] Over two million people in developing countries use this method for their daily drinking water. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[50]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar energy may be used in a water stabilisation pond to treat <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|waste water] without chemicals or electricity. A further environmental advantage is that <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|algae] grow in such ponds and consume<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|carbon dioxide] in photosynthesis, although algae may produce toxic chemicals that make the water unusable. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[52]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[53]] ====<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 15px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Cooking ** ==== //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar cooker] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> The Solar Bowl in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Auroville], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|India] , concentrates sunlight on a movable receiver to produce <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|steam] for <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cooking]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar cookers use sunlight for cooking, drying and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pasteurization]. They can be grouped into three broad categories: box cookers, panel cookers and reflector cookers. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[54]] The simplest solar cooker is the box cooker first built by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Horace de Saussure] in 1767. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[55]] A basic box cooker consists of an insulated container with a transparent lid. It can be used effectively with partially overcast skies and will typically reach temperatures of 90–150 °C. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[56]] Panel cookers use a reflective panel to direct sunlight onto an insulated container and reach temperatures comparable to box cookers. Reflector cookers use various concentrating geometries (dish, trough, Fresnel mirrors) to focus light on a cooking container. These cookers reach temperatures of 315 °C and above but require direct light to function properly and must be repositioned to track the Sun. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[57]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar bowl] is a concentrating technology employed by the Solar Kitchen in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Auroville] ,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pondicherry], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|India] , where a stationary spherical reflector focuses light along a line perpendicular to the sphere's interior surface, and a computer control system moves the receiver to intersect this line. Steam is produced in the receiver at temperatures reaching 150 °C and then used for process heat in the kitchen. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[58]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A reflector developed by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Wolfgang Scheffler] in 1986 is used in many solar kitchens. Scheffler reflectors are flexible parabolic dishes that combine aspects of trough and power tower concentrators. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Polar tracking] is used to follow the Sun's daily course and the curvature of the reflector is adjusted for seasonal variations in the incident angle of sunlight. These reflectors can reach temperatures of 450–650 °C and have a fixed focal point, which simplifies cooking. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[59]] The world's largest Scheffler reflector system in Abu Road, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Rajasthan], India is capable of cooking up to 35,000 meals a day. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[60]] As of 2008, over 2,000 large Scheffler cookers had been built worldwide. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[61]] ====<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 15px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Process heat ** ==== //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar pond], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Salt evaporation pond] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar furnace] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> STEP parabolic dishes used for steam production and electrical generation. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar concentrating technologies such as parabolic dish, trough and Scheffler reflectors can provide process heat for commercial and industrial applications. The first commercial system was the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Total Energy Project] (STEP) in Shenandoah, Georgia, USA where a field of 114 parabolic dishes provided 50% of the process heating, air conditioning and electrical requirements for a clothing factory. This grid-connected cogeneration system provided 400 kW of electricity plus thermal energy in the form of 401 kW steam and 468 kW chilled water, and had a one hour peak load thermal storage. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[62]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Evaporation ponds are shallow pools that concentrate dissolved solids through <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|evaporation]. The use of evaporation ponds to obtain salt from sea water is one of the oldest applications of solar energy. Modern uses include concentrating brine solutions used in leach mining and removing dissolved solids from waste streams. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[63]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Clothes lines], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|clotheshorses] , and clothes racks dry clothes through evaporation by wind and sunlight without consuming electricity or gas. In some states of the United States legislation protects the "right to dry" clothes. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[64]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Unglazed transpired collectors (UTC) are perforated sun-facing walls used for preheating ventilation air. UTCs can raise the incoming air temperature up to 22 °C and deliver outlet temperatures of 45–60 °C. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[65]] The short payback period of transpired collectors (3 to 12 years) makes them a more cost-effective alternative than glazed collection systems. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[65]] As of 2003, over 80 systems with a combined collector area of 35,000 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|m2] had been installed worldwide, including an 860 m 2 collector in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Costa Rica] used for drying coffee beans and a 1,300 m 2 collector in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Coimbatore], India used for drying marigolds. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[26]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Electrical generation ** === //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar power] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PS10] concentrates sunlight from a field of heliostats on a central tower. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar power is the conversion of sunlight into <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|electricity], either directly using <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaics] (PV), or indirectly using <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|concentrated solar power] (CSP). CSP systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. PV converts light into electric current using the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photoelectric effect]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Commercial CSP plants were first developed in the 1980s, and the 354 MW <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SEGS] CSP installation is the largest solar power plant in the world and is located in the Mojave Desert of California. Other large CSP plants include the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solnova Solar Power Station] (150 MW) and the<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Andasol solar power station] (100 MW), both in Spain. The 80 MW <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sarnia Photovoltaic Power Plant] in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada], is the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|world’s largest] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaic plant]. ====<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 15px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Experimental solar power ** ==== //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar pond] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thermogenerator] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Solar Evaporation Ponds in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Atacama Desert], South America <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar pond] is a pool of salt water (usually 1–2 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|m] deep) that collects and stores solar energy. Solar ponds were first proposed by Dr. Rudolph Bloch in 1948 after he came across reports of a lake in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hungary] in which the temperature increased with depth. This effect was due to salts in the lake's water, which created a "density gradient" that prevented <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|convection currents]. A prototype was constructed in 1958 on the shores of the Dead Sea near <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Jerusalem]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[66]] The pond consisted of layers of water that successively increased from a weak salt solution at the top to a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|high salt] solution at the bottom. This solar pond was capable of producing temperatures of 90 °C in its bottom layer and had an estimated solar-to-electric efficiency of two percent. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thermoelectric], or "thermovoltaic" devices convert a temperature difference between dissimilar materials into an electric current. First proposed as a method to store solar energy by solar pioneer Mouchout in the 1800s, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[67]] thermoelectrics reemerged in the Soviet Union during the 1930s. Under the direction of Soviet scientist <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Abram Ioffe] a concentrating system was used to thermoelectrically generate power for a 1 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hp] engine. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[68]] Thermogenerators were later used in the US space program as an energy conversion technology for powering deep space missions such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Cassini], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Galileo] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Viking]. Research in this area is focused on raising the efficiency of these devices from 7–8% to 15–20%. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[69]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Solar chemical ** === //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar chemical] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar chemical processes use solar energy to drive chemical reactions. These processes offset energy that would otherwise come from an alternate source and can convert solar energy into storable and transportable fuels. Solar induced chemical reactions can be divided into thermochemical or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photochemical]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[70]] A variety of fuels can be produced by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|artificial photosynthesis]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[71]] The multielectron catalytic chemistry involved in making carbon-based fuels (such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|methanol] ) from reduction of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|carbon dioxide] is challenging; a feasible alternative is <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrogen] production from protons, though use of water as the source of electrons (as plants do) requires mastering the multielectron oxidation of two water molecules to molecular oxygen. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[72]] Some have envisaged working solar fuel plants in coastal metropolitan areas by 2050- the splitting of sea water providing hydrogen to be run through adjacent fuel-cell electric power plants and the pure water by-product going directly into the municipal water system. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[73]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hydrogen production] technologies been a significant area of solar chemical research since the 1970s. Aside from electrolysis driven by photovoltaic or photochemical cells, several thermochemical processes have also been explored. One such route uses concentrators to split water into oxygen and hydrogen at high temperatures (2300-2600 °C). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[74]] Another approach uses the heat from solar concentrators to drive the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|steam reformation] of natural gas thereby increasing the overall hydrogen yield compared to conventional reforming methods. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[75]] Thermochemical cycles characterized by the decomposition and regeneration of reactants present another avenue for hydrogen production. The Solzinc process under development at the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Weizmann Institute] uses a 1 MW solar furnace to decompose <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|zinc oxide] (ZnO) at temperatures above 1200 °C. This initial reaction produces pure zinc, which can subsequently be reacted with water to produce hydrogen. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[76]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sandia's] Sunshine to Petrol (S2P) technology uses the high temperatures generated by concentrating sunlight along with a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|zirconia] /<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ferrite] catalyst to break down atmospheric carbon dioxide into oxygen and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|carbon monoxide] (CO). The carbon monoxide can then be used to synthesize conventional fuels such as methanol, gasoline and jet fuel. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[77]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A photogalvanic device is a type of battery in which the cell solution (or equivalent) forms energy-rich chemical intermediates when illuminated. These energy-rich intermediates can potentially be stored and subsequently reacted at the electrodes to produce an electric potential. The ferric-thionine chemical cell is an example of this technology. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[78]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Photoelectrochemical cells or PECs consist of a semiconductor, typically titanium dioxide or related titanates, immersed in an electrolyte. When the semiconductor is illuminated an electrical potential develops. There are two types of photoelectrochemical cells: photoelectric cells that convert light into electricity and photochemical cells that use light to drive chemical reactions such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|electrolysis]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[79]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A combination thermal/photochemical cell has also been proposed. The Stanford PETE process uses solar thermal energy to raise the temperature of a thermionic metal to about 800C to increase the rate of production of electricity to electrolyse atmospheric CO2 down to carbon or carbon monoxide which can then be used for fuel production, and the waste heat can be used as well. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[80]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Solar vehicles ** === //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar vehicle], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar-charged vehicle] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Electric boat] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar balloon] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Australia hosts the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|World Solar Challenge] where solar cars like the Nuna3 race through a 3,021 km (1,877 mi) course from Darwin to Adelaide. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Development of a solar powered car has been an engineering goal since the 1980s. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|World Solar Challenge] is a biannual solar-powered car race, where teams from universities and enterprises compete over 3,021 kilometres (1,877 mi) across central Australia from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Darwin] to<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Adelaide]. In 1987, when it was founded, the winner's average speed was 67 kilometres per hour (42 mph) and by 2007 the winner's average speed had improved to 90.87 kilometres per hour (56.46 mph). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[81]] The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|North American Solar Challenge] and the planned <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|South African Solar Challenge] are comparable competitions that reflect an international interest in the engineering and development of solar powered vehicles. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[82]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[83]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Some vehicles use solar panels for auxiliary power, such as for air conditioning, to keep the interior cool, thus reducing fuel consumption. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[84]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[85]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In 1975, the first practical solar boat was constructed in England. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[86]] By 1995, passenger boats incorporating PV panels began appearing and are now used extensively. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[87]] In 1996, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kenichi Horie] made the first solar powered crossing of the Pacific Ocean, and the //sun21// catamaran made the first solar powered crossing of the Atlantic Ocean in the winter of 2006–2007. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[88]] There are plans to circumnavigate the globe in 2010. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[89]] <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Helios UAV in solar powered flight. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In 1974, the unmanned <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|AstroFlight Sunrise] plane made the first solar flight. On 29 April 1979, the//<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Riser] // made the first flight in a solar powered, fully controlled, man carrying flying machine, reaching an altitude of 40 feet (12 m). In 1980, the //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Gossamer Penguin] // made the first piloted flights powered solely by photovoltaics. This was quickly followed by the //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Challenger] // which crossed the English Channel in July 1981. In 1990 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Eric Scott Raymond] in 21 hops flew from California to North Carolina using solar power. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[90]] Developments then turned back to unmanned aerial vehicles (UAV) with the //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pathfinder] // (1997) and subsequent designs, culminating in the //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Helios] // which set the altitude record for a non-rocket-propelled aircraft at 29,524 metres (96,864 ft) in 2001. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[91]] The//<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Zephyr] //, developed by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BAE Systems], is the latest in a line of record-breaking solar aircraft, making a 54-hour flight in 2007, and month-long flights are envisioned by 2010. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[92]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar balloon] is a black balloon that is filled with ordinary air. As sunlight shines on the balloon, the air inside is heated and expands causing an upward <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|buoyancy] force, much like an artificially heated <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hot air balloon]. Some solar balloons are large enough for human flight, but usage is generally limited to the toy market as the surface-area to payload-weight ratio is relatively high. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[93]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar sails] are a proposed form of spacecraft propulsion using large <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|membrane mirrors] to exploit radiation pressure from the Sun. Unlike rockets, solar sails require no fuel. Although the thrust is small compared to rockets, it continues as long as the Sun shines onto the deployed sail and in the vacuum of space significant speeds can eventually be achieved. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[94]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|High-altitude airship] (HAA) is an unmanned, long-duration, lighter-than-air vehicle using <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|helium] gas for lift, and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|thin film] solar cells for power. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States Department of Defense] Missile Defense Agency has contracted <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Lockheed Martin] to construct it to enhance the<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ballistic Missile Defense System] (BMDS). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[95]] Airships have some advantages for solar-powered flight: they do not require power to remain aloft, and an airship's envelope presents a large area to the Sun. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Energy storage methods == //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thermal mass], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thermal energy storage] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Phase change material] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Grid energy storage] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|V2G] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Solar Two's thermal storage system generated electricity during cloudy weather and at night. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar energy is not available at night, and energy storage is an important issue because modern energy systems usually assume continuous availability of energy. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[96]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Thermal mass systems can store solar energy in the form of heat at domestically useful temperatures for daily or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|seasonal durations]. Thermal storage systems generally use readily available materials with high <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|specific heat] capacities such as water, earth and stone. Well-designed systems can lower <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|peak demand], shift time-of-use to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|off-peak] hours and reduce overall heating and cooling requirements. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[97]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[98]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Phase change materials such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|paraffin wax] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Glauber's salt] are another thermal storage media. These materials are inexpensive, readily available, and can deliver domestically useful temperatures (approximately 64 °C). The "Dover House" (in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Dover, Massachusetts] ) was the first to use a Glauber's salt heating system, in 1948. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[99]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar energy can be stored at high temperatures using <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|molten salts]. Salts are an effective storage medium because they are low-cost, have a high specific heat capacity and can deliver heat at temperatures compatible with conventional power systems. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Two] used this method of energy storage, allowing it to store 1.44 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|TJ] in its 68 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|m3] storage tank with an annual storage efficiency of about 99%. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[100]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Off-grid PV systems have traditionally used <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|rechargeable batteries] to store excess electricity. With grid-tied systems, excess electricity can be sent to the transmission <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|grid]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Net metering] programs give these systems a credit for the electricity they deliver to the grid. This credit offsets electricity provided from the grid when the system cannot meet demand, effectively using the grid as a storage mechanism. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[101]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pumped-storage hydroelectricity] stores energy in the form of water pumped when energy is available from a lower elevation reservoir to a higher elevation one. The energy is recovered when demand is high by releasing the water to run through a hydroelectric power generator. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[102]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Development, deployment and economics == //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Deployment of solar power to energy grids] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> A parabolic dish and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|stirling engine] system, which <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|concentrates sunlight] to produce useful solar power. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Beginning with the surge in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|coal] use which accompanied the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Industrial Revolution], energy consumption has steadily transitioned from wood and biomass to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fossil fuels]. The early development of solar technologies starting in the 1860s was driven by an expectation that coal would soon become scarce. However development of solar technologies stagnated in the early 20th century in the face of the increasing availability, economy, and utility of coal and<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petroleum]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[103]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1973 oil embargo] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1979 energy crisis] caused a reorganization of energy policies around the world and brought renewed attention to developing solar technologies. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[104]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[105]]  Deployment strategies focused on incentive programs such as the Federal Photovoltaic Utilization Program in the US and the Sunshine Program in Japan. Other efforts included the formation of research facilities in the US (SERI, now <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|NREL] ), Japan (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|NEDO] ), and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Germany] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Fraunhofer Institute for Solar Energy Systems ISE] ). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[106]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Commercial solar water heaters began appearing in the United States in the 1890s. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[107]] These systems saw increasing use until the 1920s but were gradually replaced by cheaper and more reliable heating fuels. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[108]] As with photovoltaics, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar water heating] attracted renewed attention as a result of the oil crises in the 1970s but interest subsided in the 1980s due to falling petroleum prices. Development in the solar water heating sector progressed steadily throughout the 1990s and growth rates have averaged 20% per year since 1999. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[39]] Although generally underestimated, solar water heating and cooling is by far the most widely deployed solar technology with an estimated capacity of 154 GW as of 2007. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[39]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> ISO Standards == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|International Organization for Standardization] has established a number of standards relating to solar energy equipment. For example, ISO 9050 relates to glass in building while ISO 10217 relates to the materials used in solar water heaters. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> See also == <span style="border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #aaaaaa; border-left-style: solid; border-left-width: 1px; border-right-color: #aaaaaa; border-right-style: solid; border-right-width: 1px; border-top-color: #aaaaaa; border-top-style: solid; border-top-width: 1px; clear: right; display: block; float: right; margin-bottom: 0.5em; margin-left: 0.5em; margin-right: 0px; margin-top: 0.5em;"> ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Notes == ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> References == ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> External links ==
 * ~ **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy] ** ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-left: auto; margin-right: auto; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Wind-turbine-icon.svg/60px-Wind-turbine-icon.svg.png width="60" height="60" align="center" caption="Wind Turbine" link="http://en.wikipedia.org/wiki/File:Wind-turbine-icon.svg"]]
 * <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Biofuel]
 * Solar energy**
 * <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|v] **·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|d] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none;">[|e]     ||
 * ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; border-width: initial; color: black; display: inline; font-size: 12px; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; width: auto;">**Contents** ==
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2 Applications of solar technology]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.1 Architecture and urban planning]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.2 Agriculture and horticulture]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.3 Solar lighting]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.4 Solar thermal]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.4.1 Water heating]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.4.2 Heating, cooling and ventilation]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.4.3 Water treatment]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.4.4 Cooking]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.4.5 Process heat]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.5 Electrical generation]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.5.1 Experimental solar power]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.6 Solar chemical]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2.7 Solar vehicles]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3 Energy storage methods]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|4 Development, deployment and economics]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|5 ISO Standards]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|6 See also]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|7 Notes]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|8 References]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|9 External links] ||
 * ~ Yearly Solar fluxes & Human Energy Consumption ||
 * Solar || 3,850,000 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|EJ] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]] ||
 * Wind || 2,250 EJ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[7]] ||
 * Biomass || 3,000 EJ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[8]] ||
 * Primary energy use (2005) || 487 EJ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[9]] ||
 * Electricity (2005) || 56.7 EJ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[10]] ||
 * = <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/7/70/Sustainable_development.svg/32px-Sustainable_development.svg.png width="32" height="24" link="http://en.wikipedia.org/wiki/File:Sustainable_development.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sustainable development portal] **// ||
 * = <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Crystal_energy.svg/29px-Crystal_energy.svg.png width="29" height="28" link="http://en.wikipedia.org/wiki/File:Crystal_energy.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy portal] **// ||
 * = <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Wind-turbine-icon.svg/28px-Wind-turbine-icon.svg.png width="28" height="28" link="http://en.wikipedia.org/wiki/File:Wind-turbine-icon.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy portal] **// ||
 * * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BigBelly]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Carbon finance]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Carbon nanotubes in photovoltaics]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Community solar farm]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Cost of electricity by source]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Crookes radiometer]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Desertec]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Drake Landing Solar Community]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Economics of new nuclear power plants]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy storage]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|EURO-SOLAR Programme]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Global dimming]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Greasestock]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Green electricity]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|High voltage direct current]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of conservation topics]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of renewable energy organizations] || * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of solar energy topics]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of solar thermal power stations]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Photovoltaic module]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Relative cost of electricity generated by different sources]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable heat]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Decathlon]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar easement]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar flower tower]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar lamp]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar power satellite]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Soil solarization]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sunlight intensity in the Solar System]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Timeline of solar cells]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Trombe wall]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Wafer (electronics)]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|World energy resources and consumption] ||
 * 1) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Smil (1991), p. 240
 * 2) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Natural Forcing of the Climate System"] . Intergovernmental Panel on Climate Change . Retrieved 2007-09-29.
 * 3) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Radiation Budget"] . NASA Langley Research Center. 2006-10-17 . Retrieved 2007-09-29.
 * 4) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Somerville, Richard. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Historical Overview of Climate Change Science"] (PDF). Intergovernmental Panel on Climate Change . Retrieved 2007-09-29.
 * 5) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Vermass, Wim. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"An Introduction to Photosynthesis and Its Applications"] . Arizona State University . Retrieved 2007-09-29.
 * 6) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] Smil (2006), p. 12
 * 7) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Archer, Cristina; Jacobson, Mark.<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Evaluation of Global Wind Power"] . Stanford . Retrieved 2008-06-03.
 * 8) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Energy conversion by photosynthetic organisms"] . Food and Agriculture Organization of the United Nations . Retrieved 2008-05-25.
 * 9) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"World Consumption of Primary Energy by Energy Type and Selected Country Groups, 1980-2004"] . <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy Information Administration] . Retrieved 2008-05-17.
 * 10) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"World Total Net Electricity Consumption, 1980-2005"] . <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy Information Administration] . Retrieved 2008-05-25.
 * 11) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Solar energy: A new day dawning?] retrieved 7 August 2008
 * 12) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Powering the Planet: Chemical challenges in solar energy utilization] retrieved 7 August 2008
 * 13) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Exergy (available energy) Flow Charts] 2.7 YJ solar energy each year for two billion years vs. 1.4 YJ non-renewable resources available once.
 * 14) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|The Clean Energy Scam] Time March 27, 2008 retrieved 15 October 2008
 * 15) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|http://www.solarenergybyzip.com]
 * 16) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] Philibert, Cédric. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"The Present and Future use of Solar Thermal Energy as a Primary Source of Energy"] (PDF). International Energy Agency . Retrieved 2008-05-05.
 * 17) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Darmstadt University of Technology solar decathlon home design"] . Darmstadt University of Technology. Archived from <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|the original] on October 18, 2007 . Retrieved 2008-04-25.
 * 18) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**c**//] Schittich (2003), p. 14
 * 19) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Butti and Perlin (1981), p. 4, 159
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 * 39) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**c**//] Weiss, Werner; Bergmann, Irene; Faninger, Gerhard. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Solar Heat Worldwide - Markets and Contribution to the Energy Supply 2006"] (PDF). International Energy Agency . Retrieved 2008-06-09.
 * 40) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Renewables 2007 Global Status Report"] (PDF). Worldwatch Institute . Retrieved 2008-04-30.
 * 41) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Del Chiaro, Bernadette; Telleen-Lawton, Timothy. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Solar Water Heating (How California Can Reduce Its Dependence on Natural Gas)"] (PDF). Environment California Research and Policy Center . Retrieved 2007-09-29.
 * 42) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Energy Consumption Characteristics of Commercial Building HVAC Systems Volume III: Energy Savings Potential"] (PDF). United States Department of Energy. pp. 2–2 . Retrieved 2008-06-24.
 * 43) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Mazria(1979), p. 29–35
 * 44) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Mazria(1979), p. 255
 * 45) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Balcomb(1992), p. 56
 * 46) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Balcomb(1992), p. 57
 * 47) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**c**//] Tiwari (2003), p. 368–371
 * 48) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] Daniels (1964), p. 6
 * 49) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"SODIS solar water disinfection"] . EAWAG (The Swiss Federal Institute for Environmental Science and Technology) . Retrieved 2008-05-02.
 * 50) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Household Water Treatment Options in Developing Countries: Solar Disinfection (SODIS)"] (PDF). Centers for Disease Control and Prevention. Archived from <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|the original] on 2008-05-29 . Retrieved 2008-05-13.
 * 51) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Household Water Treatment and Safe Storage"] . World Health Organization . Retrieved 2008-05-02.
 * 52) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Shilton AN, Powell N, Mara DD, Craggs R (2008). "Solar-powered aeration and disinfection, anaerobic co-digestion, biological CO(2) scrubbing and biofuel production: the energy and carbon management opportunities of waste stabilisation ponds". //Water Sci. Technol.//**58** (1): 253–258.<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|doi] :<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|10.2166/wst.2008.666] .<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PMID] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|18653962].
 * 53) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Tadesse I, Isoaho SA, Green FB, Puhakka JA (2003). "Removal of organics and nutrients from tannery effluent by advanced integrated Wastewater Pond Systems technology". //Water Sci. Technol.//**48** (2): 307–14. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PMID] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|14510225].
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 * 59) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Scheffler-Reflector"] . Solare Bruecke . Retrieved 2008-04-25.
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 * 62) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Stine, W B and Harrigan, R W.<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Shenandoah Solar Total Energy Project"] . John Wiley . Retrieved 2008-07-20.
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 * 100) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Advantages of Using Molten Salt"] . Sandia National Laboratory . Retrieved 2007-09-29.
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 * = [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png width="30" height="40"]] || Wikimedia Commons has media related to: //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|Solar energy] **// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"How do Photovoltaics Work?"] . NASA.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Europe and Africa solar calculator"] . European Commission Joint Research Center.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Solar Power in Australia"] . Archived from <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|the original] on 2009-10-27.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Solar Energy Back in the Day] - slideshow by //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Life magazine] //
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Online article by scientist Jonathan G. Dorn, 22 July-2008] The solar thermal power industry experienced a surge in 2007, with 100 megawatts of new capacity worldwide.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Nebraska Solar Energy Society]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Eurosolar]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Compendium of Solar Cooker Designs]
 * ||||~ [<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|show] ]  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|v] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|d] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|e]    ** Solar energy ** || ||

From []
 * ||||~ [<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|show] ]  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|v] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|d] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|e]    <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Renewable energy by country]  || ||

=<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 1.6em; font-weight: normal; line-height: 1.2em; margin-bottom: 0.1em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-top: 0px; width: auto;">Solar power = From Wikipedia, the free encyclopedia <span style="color: #7d7d7d; display: block; font-size: 11px; line-height: 1.2em; margin-bottom: 1.4em; margin-left: 1em; margin-right: 0px; margin-top: 0px; width: auto;"> //This article is about generation of electricity using solar energy. For other uses of solar energy, see <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar energy] .// <span style="display: block; display: none; margin-right: -10px; position: absolute; right: 55px; top: -2em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;">  The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PS10] concentrates sunlight from a field of heliostats on a central tower. || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Biomass] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hydroelectricity] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar energy] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Tidal power] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Wave power] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Wind power] || <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">**Solar power** is the conversion of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sunlight] into <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|electricity], either directly using <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaics] (PV), or indirectly using <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|concentrated solar power] (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics converts light into electric current using the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photoelectric effect]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Commercial concentrated solar power plants were first developed in the 1980s, and the 354 MW<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SEGS] CSP installation is the largest solar power plant in the world and is located in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Mojave Desert] of California. Other large CSP plants include the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solnova Solar Power Station] (150 MW) and the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Andasol solar power station] (100 MW), both in Spain. The 97 MW <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sarnia Photovoltaic Power Plant] in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada], is the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|world’s largest] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaic plant]. * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1 Applications] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Applications == <span style="background-color: transparent; clear: left; display: block; float: left; margin-bottom: 1.3em; margin-left: 0px; margin-right: 1.4em; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 252px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Average <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|insolation] showing land area (small black dots) required to replace the world primary energy supply with solar electricity. 18 TW is 568 Exajoule (EJ) per year. Insolation for most people is from 150 to 300 W/m² or 3.5 to 7.0 kWh/m²/day. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar power has great potential, but in 2008 supplied less than 0.02% of the world's total energy supply. There are many competing technologies, including fourteen types of photovoltaic cells, such as thin film, monocrystalline silicon, polycrystalline silicon, and amorphous cells, as well as multiple types of concentrating solar power. It is too early to know which technology will become dominant. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[1]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The earliest significant application of solar cells was as a back-up power source to the<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Vanguard I] satellite in 1958, which allowed it to continue transmitting for over a year after its chemical battery was exhausted. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[2]] The successful operation of solar cells on this mission was duplicated in many other <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Soviet] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|American] satellites, and by the late 1960s, PV had become the established source of power for them. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[3]] Photovoltaics went on to play an essential part in the success of early commercial satellites such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Telstar], and they remain vital to the telecommunications infrastructure today. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[4]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The high cost of solar cells limited terrestrial uses throughout the 1960s. This changed in the early 1970s when prices reached levels that made PV generation competitive in remote areas without <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|grid] access. Early terrestrial uses included powering telecommunication stations, off-shore <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil rigs], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|navigational buoys] and railroad crossings. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[5]] These <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|off-grid] applications accounted for over half of worldwide installed capacity until 2004. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]] <span style="background-color: transparent; clear: left; display: block; float: left; margin-bottom: 1.3em; margin-left: 0px; margin-right: 1.4em; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Building-integrated photovoltaics] cover the roofs of an increasing number of homes. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1973 oil crisis] stimulated a rapid rise in the production of PV during the 1970s and early 1980s. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[7]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Economies of scale] which resulted from increasing production along with improvements in system performance brought the price of PV down from 100 USD/watt in 1971 to 7 USD/watt in 1985. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[8]] Steadily <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|falling oil prices during the early 1980s] led to a reduction in funding for photovoltaic R&D and a discontinuation of the tax credits associated with the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy Tax Act] of 1978. These factors moderated growth to approximately 15% per year from 1984 through 1996. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[9]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Since the mid-1990s, leadership in the PV sector has shifted from the US to Japan and Europe. Between 1992 and 1994 Japan increased R&D funding, established <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|net metering] guidelines, and introduced a subsidy program to encourage the installation of residential PV systems. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[10]] As a result, PV installations in the country climbed from 31.2 MW in 1994 to 318 MW in 1999, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[11]]  and worldwide production growth increased to 30% in the late 1990s. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[12]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Germany became the leading PV market worldwide since revising its <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Feed-in tariff] system as part of the Renewable Energy Sources Act. Installed PV capacity has risen from 100 MW in 2000 to approximately 4,150 MW at the end of 2007. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[13]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[14]]  After 2007, Spain became the largest PV market after adopting a similar feed-in tariff structure in 2004, installing almost half of the photovoltaics (45%) in the world, in 2008, while France, Italy, South Korea and the U.S. have seen rapid growth recently due to various incentive programs and local market conditions. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[15]] Recent Studies have shown that the global PV market is forecast to exceed 16 GW in the year 2010. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[16]] The power output of domestic photovoltaic devices is usually described in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kilowatt-peak] (kWp) units, as most are from 1 to 10 kW. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[17]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A significant problem with solar power is the capital installation cost, although cost has been decreasing due to the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|learning curve]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[18]] Developing countries in particular may not have the funds to build solar power plants, although small solar applications are now replacing other sources in the developing world. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[19]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[20]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Concentrating solar power == //Further information: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar thermal energy] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Concentrated solar power] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar troughs] are the most widely deployed. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Concentrating Solar Power (CSP) systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. The concentrated heat is then used as a heat source for a conventional power plant. A wide range of concentrating technologies exists; the most developed are the parabolic trough, the concentrating linear fresnel reflector, the Stirling dish and the solar power tower. Various techniques are used to track the Sun and focus light. In all of these systems a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|working fluid] is heated by the concentrated sunlight, and is then used for power generation or energy storage. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[21]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|parabolic trough] consists of a linear parabolic reflector that concentrates light onto a receiver positioned along the reflector's focal line. The receiver is a tube positioned right above the middle of the parabolic mirror and is filled with a working fluid. The reflector is made to follow the Sun during the daylight hours by tracking along a single axis. Parabolic trough systems provide the best land-use factor of any solar technology. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[22]] The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SEGS] plants in California and Acciona's <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nevada Solar One] near <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Boulder City, Nevada] are representatives of this technology. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[23]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[24]]  The Suntrof-Mulk parabolic trough, developed by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Melvin Prueitt], uses a technique inspired by<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Archimedes' principle] to rotate the mirrors. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[25]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Concentrating linear fresnel reflectors] are CSP-plants which use many thin mirror strips instead of parabolic mirrors to concentrate sunlight onto two tubes with working fluid. This has the advantage that flat mirrors can be used which are much cheaper than parabolic mirrors, and that more reflectors can be placed in the same amount of space, allowing more of the available sunlight to be used. Concentrating linear fresnel reflectors can be used in either large or more compact plants. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[26]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[27]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|stirling solar dish], or dish engine system, consists of a stand-alone <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|parabolic reflector] that concentrates light onto a receiver positioned at the reflector's focal point. The reflector tracks the Sun along two axes. Parabolic dish systems give the highest efficiency among CSP technologies. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[28]] The 50 kW <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Big Dish] in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canberra], Australia is an example of this technology. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[23]] The stirling solar dish combines a parabolic concentrating dish with a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|stirling heat engine] which normally drives an electric generator. The advantages of stirling solar over photovoltaic cells are higher efficiency of converting sunlight into electricity and longer lifetime. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar power tower] uses an array of tracking reflectors (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heliostats] ) to concentrate light on a central receiver atop a tower. Power towers are more cost effective, offer higher efficiency and better energy storage capability among CSP technologies. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[23]] The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Two] in Barstow, California and the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Planta Solar 10] in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sanlucar la Mayor], Spain are representatives of this technology. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[23]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[29]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Photovoltaics == //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Photovoltaics] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> 11 MW Serpa solar power plant in Portugal <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar cell], or photovoltaic cell (PV), is a device that converts light into electric current using the<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photoelectric effect]. The first solar cell was constructed by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Charles Fritts] in the 1880s. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[30]] In 1931 a German engineer, Dr Bruno Lange, developed a photo cell using silver selenide in place of copper oxide. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[31]] Although the prototype <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|selenium] cells converted less than 1% of incident light into electricity, both <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ernst Werner von Siemens] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|James Clerk Maxwell] recognized the importance of this discovery. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[32]] Following the work of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Russell Ohl] in the 1940s, researchers Gerald Pearson, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Calvin Fuller] and Daryl Chapin created the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|silicon] solar cell in 1954. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[33]] These early solar cells cost 286 USD/watt and reached efficiencies of 4.5–6%. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[34]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Development and deployment == //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Deployment of solar power to energy grids] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nellis Solar Power Plant], 14 MW power plant installed 2007 in Nevada, USA <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The early development of solar technologies starting in the 1860s was driven by an expectation that coal would soon become scarce. However, development of solar technologies stagnated in the early 20th century in the face of the increasing availability, economy, and utility of coal and<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petroleum]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[35]] In 1974 it was estimated that only six private homes in all of North America were entirely heated or cooled by functional solar power systems. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[36]] The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1973 oil embargo] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1979 energy crisis] caused a reorganization of energy policies around the world and brought renewed attention to developing solar technologies. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[37]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[38]]  Deployment strategies focused on incentive programs such as the Federal Photovoltaic Utilization Program in the US and the Sunshine Program in Japan. Other efforts included the formation of research facilities in the US (SERI, now<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|NREL] ), Japan (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|NEDO] ), and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Germany] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Fraunhofer Institute for Solar Energy Systems ISE] ). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[39]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Between 1970 and 1983 photovoltaic installations grew rapidly, but falling oil prices in the early 1980s moderated the growth of PV from 1984 to 1996. Since 1997, PV development has accelerated due to supply issues with oil and natural gas, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|global warming concerns], and the improving economic position of PV relative to other energy technologies. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[40]] Photovoltaic production growth has averaged 40% per year since 2000 and installed capacity reached 10.6 GW at the end of 2007, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]]  and 14.73 GW in 2008. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[41]] As of November 2010, the largest photovoltaic (PV) power plants in the world are the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Finsterwalde Solar Park] (Germany, 80.7 MW), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sarnia Photovoltaic Power Plant] (Canada, 80 MW),<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Olmedilla Photovoltaic Park] (Spain, 60 MW), the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Strasskirchen Solar Park] (Germany, 54 MW), the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Lieberose Photovoltaic Park] (Germany, 53 MW), and the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Puertollano Photovoltaic Park] (Spain, 50 MW). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[42]] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|MWp] )<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;"> ||~ Notes<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;"> || <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Commercial concentrating solar thermal power (CSP) plants were first developed in the 1980s. The 11 MW <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PS10] power tower in Spain, completed in late 2005, is Europe's first commercial CSP system, and a total capacity of 300 MW is expected to be installed in the same area by 2013. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[51]] When built, the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ivanpah Solar Power Facility] in southeastern California near the Nevada border is expected to have a capacity of 392 Megawatts. (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|MW] )<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;"> ||~ Name<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;"> ||~ Country<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;"> ||~ Location<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;"> ||~ Notes<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;"> || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[52]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[53]]  <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[54]]  <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[55]]  <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[56]]  || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[57]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[58]]  || ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Economics == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The U.S. Energy Information Administration calculates that, all-told, electricity from a Solar PV plants costs 4 times that of conventional coal. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[67]] Bloomburg energy estimates that solar power costs about $275 per megawatt-hour to produce compared with $60 for a coal-fired power plant. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[68]] Nevertheless, there are exceptions-- <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nellis Air Force Base] is receiving photoelectric power for about 2.2 ¢/kWh and grid power for 9 ¢/kWh. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[69]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[70]]  Also, since PV systems use no fuel and modules typically last 25 to 40 years, the International Conference on Solar Photovoltaic Investments, organized by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|EPIA], has estimated that PV systems will pay back their investors in 8 to 12 years. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[71]] As a result, since 2006 it has been economical for investors to install photovoltaics for free in return for a long term <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|power purchase agreement]. Fifty percent of commercial systems were installed in this manner in 2007 and it is expected that 90% will by 2009. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[72]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Concentrated Solar Power (CSP) facilities produce power more cheaply than photovoltaic systems and may eventually be price-competitive with conventional power plants. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ivanpah Solar Power Facility] is expected to produce power at costs comparable to natural gas. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[73]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Additionally, governments have created various financial incentives to encourage the use of solar power. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable portfolio standards] impose a government mandate that utilities generate or acquire a certain percentage of renewable power regardless of increased energy procurement costs. In most states, RPS goals can be achieved by any combination of solar, wind, biomass, landfill gas, ocean, geothermal, municipal solid waste, hydroelectric, hydrogen, or fuel cell technologies. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[73]] In Canada the RESOP (Renewable Energy Standard Offer Program), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|introduced] in 2006, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[74]]  and updated in 2009 with the passage of the Green Energy Act, allows residential homeowners in Ontario with solar panel installations to sell the energy they produce back to the grid (i.e., the government) at 42¢/kWh, while drawing power from the grid at an average rate of 6¢/kWh. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[75]] The program is designed to help promote the government's green agenda and lower the strain often placed on the energy grid at peak hours. In March, 2009 the proposed FIT was increased to 80¢/kWh for small, roof-top systems (≤10 kW). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[76]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">One financial disincentive to solar power is the large land area required. A 1000 Megawatt CSP facility requires 6000 acres of land while a similar coal-fired plant requires less than 640 acres of land. Producing 1000 Megawatts from photovoltaics requires over 12,000 acres of land. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[77]] In the United States, power companies may avoid purchasing land by leasing public land from the federal government to develop solar power facilities; however this entails different costs such as rental fees, megawatt surcharges, and the cost of compliance with a complex and time-consuming federal permitting process. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[78]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Energy storage methods == //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Grid energy storage] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|V2G] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 302px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> This energy park in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Geesthacht], Germany, includes solar panels and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pumped-storage hydroelectricity]. <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Seasonal variation of the output of the solar panels at <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|AT&T Park] in San Francisco <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar energy is not available at night, making energy storage an important issue in order to provide the continuous availability of energy. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[79]] Both <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|wind power] and solar power are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|intermittent energy sources], meaning that all available output must be taken when it is available and either stored for //when// it can be used, or transported, over transmission lines, to //where// it can be used. Wind power and solar power tend to be somewhat complementary, as there tends to be more wind in the winter and more sun in the summer, but on days with no sun and no wind the difference needs to be made up in some manner. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[80]] The Institute for Solar Energy Supply Technology of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|University of Kassel] pilot-tested a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|combined power plant] linking solar, wind,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biogas] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrostorage] to provide load-following power around the clock, entirely from renewable sources. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[81]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar energy can be stored at high temperatures using molten salts. Salts are an effective storage medium because they are low-cost, have a high specific heat capacity and can deliver heat at temperatures compatible with conventional power systems. The<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Two] used this method of energy storage, allowing it to store 1.44 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|TJ] in its 68 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|m³] storage tank, enough to provide full output for close to 39 hours, with an efficiency of about 99%. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[82]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Off-grid PV systems have traditionally used <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|rechargeable batteries] to store excess electricity. With grid-tied systems, excess electricity can be sent to the transmission <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|grid]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Net metering] programs give these systems a credit for the electricity they deliver to the grid. This credit offsets electricity provided from the grid when the system cannot meet demand, effectively using the grid as a storage mechanism. Credits are normally rolled over month to month and any remaining surplus settled annually. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[83]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pumped-storage hydroelectricity] stores energy in the form of water pumped when surplus electricity is available, from a lower elevation reservoir to a higher elevation one. The energy is recovered when demand is high by releasing the water: the pump becomes a turbine, and the motor a hydroelectric power generator. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[84]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Experimental solar power == <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Concentrating photovoltaics in Catalonia, Spain <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Concentrated photovoltaics] (CPV) systems employ sunlight concentrated onto <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaic] surfaces for the purpose of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|electrical power production]. Solar concentrators of all varieties may be used, and these are often mounted on a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar tracker] in order to keep the focal point upon the cell as the Sun moves across the sky. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[85]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Luminescent solar concentrators] (when combined with a PV-solar cell) can also be regarded as a CPV system. Luminescent solar concentrators are useful as they can improve performance of PV-solar panels drastically. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[86]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thermoelectric], or "thermovoltaic" devices convert a temperature difference between dissimilar materials into an electric current. First proposed as a method to store solar energy by solar pioneer Mouchout in the 1800s, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[87]] thermoelectrics reemerged in the Soviet Union during the 1930s. Under the direction of Soviet scientist <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Abram Ioffe] a concentrating system was used to thermoelectrically generate power for a 1 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hp] engine. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[88]] Thermogenerators were later used in the US space program as an energy conversion technology for powering deep space missions such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Cassini], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Galileo] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Viking]. Research in this area is focused on raising the efficiency of these devices from 7–8% to 15–20%. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[89]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Space-based solar power] is a theoretical design for the collection of solar power in space, for use on Earth. SBSP differs from the usual method of solar power collection in that the solar panels used to collect the energy would reside on a satellite in orbit, often referred to as a solar power satellite (SPS), rather than on Earth's surface. In space, collection of the Sun's energy is unaffected by the day/night cycle, weather, seasons, or the filtering effect of Earth's atmospheric gases. Average solar energy per unit area outside Earth's atmosphere is on the order of ten times that available on Earth's surface. However, there is no shortage of energy reaching the surface. The amount of solar energy reaching the surface of the planet each year is about twice the amount of energy that will be obtained forever from coal, oil, natural gas, and mined Uranium, combined, even using <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|breeder reactors]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[90]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> See also == <span style="border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #aaaaaa; border-left-style: solid; border-left-width: 1px; border-right-color: #aaaaaa; border-right-style: solid; border-right-width: 1px; border-top-color: #aaaaaa; border-top-style: solid; border-top-width: 1px; clear: right; display: block; float: right; margin-bottom: 0.5em; margin-left: 0.5em; margin-right: 0px; margin-top: 0.5em;"> ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Notes == ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> References ==
 * ~ **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy] ** ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-left: auto; margin-right: auto; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Wind-turbine-icon.svg/60px-Wind-turbine-icon.svg.png width="60" height="60" align="center" caption="Wind Turbine" link="http://en.wikipedia.org/wiki/File:Wind-turbine-icon.svg"]]
 * <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Biofuel]
 * <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|v] **·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|d] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none;">[|e]     ||
 * ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; border-width: initial; color: black; display: inline; font-size: 12px; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; width: auto;">**Contents** ==
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2 Concentrating solar power]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3 Photovoltaics]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|4 Development and deployment]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|5 Economics]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|6 Energy storage methods]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|7 Experimental solar power]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|8 See also]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|9 Notes]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|10 References] ||
 * World's largest photovoltaic power stations (50 MW or larger)** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[42]] **||~ PV power station<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Solar_power#"]] ||~ Country<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Solar_power#"]] ||~ DC peak power
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sarnia Photovoltaic Power Plant] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[43]] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada] || 97 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[42]]  || Constructed 2009-2010 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[44]]  ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Montalto di Castro Photovoltaic Power Station] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[42]] || Italy || 84.2 || Constructed 2009-2010 ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Finsterwalde Solar Park] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[45]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[46]]  || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Germany] || 80.7 || Phase I completed 2009, phase II and III 2010 ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Rovigo Photovoltaic Power Plant] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[47]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[48]]  || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Italy] || 70 || Completed November 2010 ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Olmedilla Photovoltaic Park] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain] || 60 || Completed September 2008 ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Strasskirchen Solar Park] || Germany || 54 ||  ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Lieberose Photovoltaic Park] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[49]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[50]]  || Germany || 53 || Completed in 2009 ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Puertollano Photovoltaic Park] || Spain || 50 || 231,653 crystalline silicon modules, Suntech and Solaria, opened 2008 ||
 * Operational solar thermal power stations**||~ Capacity
 * 354 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Energy Generating Systems] || [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Flag_of_the_United_States.svg/22px-Flag_of_the_United_States.svg.png width="initial; border-color: initial; vertical-align: middle; border-top-width: 1" height="12"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|USA] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Mojave Desert] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|California] || Collection of 9 units ||
 * 150 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solnova Solar Power Station] || [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Flag_of_Spain.svg/22px-Flag_of_Spain.svg.png width="initial; border-color: initial; vertical-align: middle; border-top-width: 1" height="15"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain] || Seville || Completed 2010
 * 100 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Andasol solar power station] || [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Flag_of_Spain.svg/22px-Flag_of_Spain.svg.png width="initial; border-color: initial; vertical-align: middle; border-top-width: 1" height="15"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Granada] || Completed 2009
 * 64 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nevada Solar One] || [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Flag_of_the_United_States.svg/22px-Flag_of_the_United_States.svg.png width="initial; border-color: initial; vertical-align: middle; border-top-width: 1" height="12"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|USA] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Boulder City, Nevada] ||  ||
 * 50 || Ibersol Ciudad Real || [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Flag_of_Spain.svg/22px-Flag_of_Spain.svg.png width="initial; border-color: initial; vertical-align: middle; border-top-width: 1" height="15"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain] || Puertollano, Ciudad Real || Completed May 2009 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[59]] ||
 * 50 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Alvarado I] || [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Flag_of_Spain.svg/22px-Flag_of_Spain.svg.png width="initial; border-color: initial; vertical-align: middle; border-top-width: 1" height="15"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain] || Badajoz || Completed July 2009 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[60]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[61]]  <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[62]]  ||
 * 50 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Extresol 1] || [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Flag_of_Spain.svg/22px-Flag_of_Spain.svg.png width="initial; border-color: initial; vertical-align: middle; border-top-width: 1" height="15"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain] || Torre de Miguel Sesmero (Badajoz) || Completed February 2010 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[63]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[64]]  <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[65]]  ||
 * 50 || La Florida || [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Flag_of_Spain.svg/22px-Flag_of_Spain.svg.png width="initial; border-color: initial; vertical-align: middle; border-top-width: 1" height="15"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain] || Alvarado (Badajoz) || completed July 2010 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[63]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[66]]  ||
 * = <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Crystal_energy.svg/29px-Crystal_energy.svg.png width="29" height="28" link="http://en.wikipedia.org/wiki/File:Crystal_energy.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy portal] **// ||
 * = <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/7/70/Sustainable_development.svg/32px-Sustainable_development.svg.png width="32" height="24" link="http://en.wikipedia.org/wiki/File:Sustainable_development.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sustainable development portal] **// ||
 * = [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png width="30" height="40"]] || Wikimedia Commons has media related to: //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|Solar energy] **// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Cost of electricity by source]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of photovoltaic power stations]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of renewable energy organizations]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of solar energy topics]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of solar thermal power stations]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy commercialization]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar energy]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar lamp]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sustainable energy]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thin-film cell]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Timeline of solar energy]
 * 1) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Technologies]
 * 2) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 45–46
 * 3) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 49–50
 * 4) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 49–50, 190
 * 5) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 57–85
 * 6) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Renewables 2007 Global Status Report"] (PDF). Worldwatch Institute. p. 11 . Retrieved 2008-04-30.
 * 7) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Photovoltaic Milestones"] . Energy Information Agency - Department of Energy . Retrieved 2008-05-20.
 * 8) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 50, 118
 * 9) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"World Photovoltaic Annual Production, 1971-2003"] . Earth Policy Institute . Retrieved 2008-05-29.
 * 10) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Policies to Promote Non-hydro Renewable Energy in the United States and Selected Countries"] . Energy Information Agency – Department of Energy . Retrieved 2008-05-29.
 * 11) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Foster, Robert. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Japan Pholtovoltaics Market Overview"] (PDF). Department of Energy . Retrieved 2008-06-05.
 * 12) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Handleman, Clayton. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"An Experience Curve Based Model for the Projection of PV Module Costs and Its Policy Implications"] (PDF). Heliotronic . Retrieved 2008-05-29.
 * 13) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Renewable energy sources in figures - national and international development"] (PDF). Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (Germany) . Retrieved 2008-05-29.
 * 14) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Marketbuzz 2008: Annual World Solar Pholtovoltaic Industry Report"] . solarbuzz . Retrieved 2008-06-05.
 * 15) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Trends in Photovoltaic Applications - Survey report of selected IEA countries between 1992 and 2006"] (PDF). International Energy Agency . Retrieved 2008-06-05.
 * 16) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[]
 * 17) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Live Sites - links to over 800 monitored solar panels"] . Fat Spaniel . Retrieved 2009-05-18 . "The live feeds shown here cite figures in<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kilowatt-peak] (kWp) units."
 * 18) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Cost Of Installed Solar Photovoltaic Systems Drops Significantly Over The Last Decade] retrieved 19 May 2009
 * 19) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Govt to bear 80% cost of generating solar power] retrieved 19 May 2009
 * 20) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|In India’s Sea of Darkness: An Unsustainable Island of Decentralized Energy Production] retrieved 19 May 2009
 * 21) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Martin and Goswami (2005), p. 45
 * 22) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Concentrated Solar Thermal Power - Now] Retrieved 19 August 2008
 * 23) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**c**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**d**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Concentrating Solar Power in 2001 - An IEA/SolarPACES Summary of Present Status and Future Prospects"] (PDF). International Energy Agency - SolarPACES . Retrieved 2008-07-02.
 * 24) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"UNLV Solar Site"] . University of Las Vegas . Retrieved 2008-07-02.
 * 25) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Suntrof-Mulk Parabolic Trough]
 * 26) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Compact CLFR]
 * 27) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Ausra compact CLFR introducing cost-saving solar rotation features]
 * 28) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"An Assessment of Solar Energy Conversion Technologies and Research Opportunities"] (PDF). Stanford University - Global Climate Change & Energy Project . Retrieved 2008-07-02.
 * 29) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** David Shukman (2 May 2007). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Power station harnesses Sun's rays"] . BBC News . Retrieved 2008-07-02.
 * 30) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 147
 * 31) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Magic Plates, Tap Sun For Power", June 1931, Popular Science]
 * 32) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 18–20
 * 33) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 29
 * 34) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin (1999), p. 29–30, 38
 * 35) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Butti and Perlin (1981), p. 63, 77, 101
 * 36) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** "The Solar Energy Book-Once More." //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Mother Earth News] // 31:16-17, Jan. 1975
 * 37) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Butti and Perlin (1981), p. 249
 * 38) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Yergin (1991), p. 634, 653-673
 * 39) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Chronicle of Fraunhofer-Gesellschaft"] . Fraunhofer-Gesellschaft . Retrieved 2007-11-04.
 * 40) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Solar: photovoltaic: Lighting Up The World] retrieved 19 May 2009
 * 41) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Global Market Outlook Until 2013"] (PDF). European Photovoltaic Industry Association . Retrieved 2009-05-22.
 * 42) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**c**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**d**//] PV Resources.com (2009). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|World's largest photovoltaic power plants]
 * 43) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Enbridge Inc. buys Sarnia solar farm]
 * 44) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Sarnia Solar Project Celebration]
 * 45) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Good Energies, NIBC Infrastructure Partners acquire Finsterwalde II and Finsterwalde III]
 * 46) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Implementation of the 39 MWp – „Solar Park Finsterwalde II and Finsterwalde III“]
 * 47) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|SunEdison sells Europe's largest solar plant to First Reserve]
 * 48) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|First Reserve buys 70 MW solar plant from SunEdison]
 * 49) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Germany Turns On World's Biggest Solar Power Project]
 * 50) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Lieberose solar farm becomes Germany's biggest, World's second-biggest]
 * 51) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"PS10"] . SolarPACES (Solar Power and Chemical Energy Systems) . Retrieved 2008-06-24.
 * 52) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Abengoa Rakes in $426M for 4 Solar Power Plants]
 * 53) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Abengoa Begins Operation of 50MW Concentrating Solar Power Plant"] . SustainableBusiness.com News. May 6, 2010 . Retrieved 2010-05-07.
 * 54) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Abengoa Solar begins commercial operation of Solnova 1]
 * 55) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Abengoa Solar begins commercial operation of Solnova 3]
 * 56) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Abengoa Solar Reaches Total of 193 Megawatts Operating]
 * 57) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Acciona y ACS inscriben sus termosolares en el registro de Industria]
 * 58) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|ACS aumenta un 22,6% las ganancias de su negocio de 'energía verde' en la primera mitad de año]
 * 59) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|José María Barreda and Ignacio Galán open IBERDROLA RENOVABLES’ first solar termal power plant]
 * 60) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Acciona Status Solarpaces 2008] //p.25//
 * 61) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|ACCIONA Energía develops 900-million-euro renewables projects in the region of Extremadura]
 * 62) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|ACCIONA opens its first CSP plant in Spain, in Extremadura]
 * 63) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Lokalizacion de Centrales Termosolares de Espana]
 * 64) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Solar Thermal Power Generation - A Spanish Success Story]
 * 65) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|ACS LAUNCHES THE OPERATION PHASE OF ITS THIRD DISPATCHABLE 50 MW THERMAL POWER PLANT IN SPAIN, EXTRESOL-1]
 * 66) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Spain - A Solar Thermal Powerhouse]
 * 67) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Levelized Cost of New Electricity Generating Technologies"] (PDF). Institute for Energy Research . Retrieved 2011-01-28.
 * 68) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Sills, Ben, "Spanish Sun Burn", //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Bloomberg Markets] //, November 2010, pp. 99–106.
 * 69) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Nellis Solar Power System]
 * 70) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"An Argument for Feed-in Tariffs"] (PDF). European Photovoltaic Industry Association . Retrieved 2008-06-09.
 * 71) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|3rd International Conference on Solar Photovoltaic Investments]
 * 72) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Solar Power Services: How PPAs are Changing the PV Value Chain] February 11, 2008, retrieved 21 May 2009 <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|[1]]
 * 73) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] Robert Glennon and Andrew M. Reeves, Solar Energy's Cloudy Future, 1 Ariz. J. Evtl. L. & Pol'y, 91, 106 (2010) available at<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[]
 * 74) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|RESOP Program Update]
 * 75) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Solar program in Ontario]
 * 76) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Proposed Feed-In Tariff Prices for Renewable Energy Projects in Ontario]
 * 77) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Mike Hightower, Sandia Laboratories, Renewable Energy Development in the Southwest: Sustainability Challenges & Directions (2009), available at <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[] /thursday/hightower.pdf.
 * 78) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Robert Glennon and Andrew M. Reeves, Solar Energy's Cloudy Future, 1 Ariz. J. Evtl. L. & Pol'y, 91, 109-116 (2010) available at<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[]
 * 79) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Carr (1976), p. 85
 * 80) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Wind + sun join forces at Washington power plant] Retrieved 31 January 2008
 * 81) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"The Combined Power Plant: the first stage in providing 100% power from renewable energy"] . SolarServer. January 2008 . Retrieved 2008-10-10.
 * 82) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Advantages of Using Molten Salt"] . Sandia National Laboratory . Retrieved 2007-09-29.
 * 83) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"PV Systems and Net Metering"] . Department of Energy. Archived from <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|the original] on 2008-07-04 . Retrieved 2008-07-31.
 * 84) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Pumped Hydro Storage"] . Electricity Storage Association . Retrieved 2008-07-31.
 * 85) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** MSU-CSET Participation Archive with notation in the Murray Ledger & Times
 * 86) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|What is a luminescent solar concentrator?]
 * 87) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Perlin and Butti (1981), p. 73
 * 88) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Halacy (1973), p. 76
 * 89) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Tritt (2008), p. 366–368
 * 90) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Exergy (available energy) Flow Charts] 2.7 YJ solar energy each year for two billion years vs. 1.4 YJ non-renewable resources available once.
 * = [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png width="30" height="40"]] || Wikimedia Commons has media related to: //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|Solar energy] **// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Butti, Ken; Perlin, John (1981). //A Golden Thread (2500 Years of Solar Architecture and Technology)//. Van Nostrand Reinhold. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|0-442-24005-8].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Carr, Donald E. (1976). //Energy & the Earth Machine//. W. W. Norton & Company. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|0-393-06407-7].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Halacy, Daniel (1973). //The Coming Age of Solar Energy//. Harper and Row. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|0-380-00233-7].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Martin, Christopher L.; Goswami, D. Yogi (2005). //Solar Energy Pocket Reference//. International Solar Energy Society. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|0-9771282-0-2].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Mills, David (2004). "Advances in solar thermal electricity technology". //Solar Energy// **76** (1-3): 19–31. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|doi] :<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|10.1016/S0038-092X(03)00102-6].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Perlin, John (1999). //From Space to Earth (The Story of Solar Electricity)//. Harvard University Press. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|0-674-01013-2].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Tritt, T.; Böttner, H.; Chen, L. (2008). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Thermoelectrics: Direct Solar Thermal Energy Conversion"] . //MRS Bulletin// **33** (4): 355–372.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Yergin, Daniel (1991). //The Prize: The Epic Quest for Oil, Money, and Power//. Simon & Schuster. pp. 885. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|978-0-671-79932-8].
 * ||||~ [<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|show] ]  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|v] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|d] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|e]    <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Solar energy]  || ||


 * ||||~ [<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|show] ]  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|v] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|d] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|e]    <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Renewable energy by country]  || ||


 * ||||~ [<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|show] ]  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|v] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|d] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|e]    <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Electricity generation]  || ||

From []

=<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 1.6em; font-weight: normal; line-height: 1.2em; margin-bottom: 0.1em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-top: 0px; width: auto;">Solar panel =

From Wikipedia, the free encyclopedia <span style="color: #7d7d7d; display: block; font-size: 11px; line-height: 1.2em; margin-bottom: 1.4em; margin-left: 1em; margin-right: 0px; margin-top: 0px; width: auto;"> //"Photovoltaic module" redirects here. For the heat collectors, see <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar thermal collector] .// <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 302px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> An installation of solar panels in rural Mongolia   <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;">  A solar panel, or photovoltaic module, is composed of individual PV cells. This crystalline-silicon panel has an <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|aluminium] frame and glass on the front. <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> A PV module on the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISS]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A **solar panel** (**photovoltaic module** or **photovoltaic panel**) is a packaged interconnected assembly of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar cells], also known as //photovoltaic cells//. The solar panel can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Because a single solar panel can only produce a limited amount of power, many installations contain several panels. A <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaic system] typically includes an array of solar panels, an <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|inverter], may contain a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|batteries] and interconnection wiring. * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1 Theory and construction] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Theory and construction  == //See also: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Photovoltaic cell] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PV cells] connected together in a solar panel. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar panels use light energy (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photons] ) from the sun to generate electricity through the<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaic effect]. The structural (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|load carrying] ) member of a module can either be the top layer or the back layer. The majority of modules use <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|wafer] -based <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|crystalline silicon] cells or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|thin-film cells] based on <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cadmium telluride] or silicon. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The cells must be connected electrically to one another and to the rest of the system. Cells must also be protected from mechanical damage and moisture. Most solar panels are rigid, but semi-flexible ones are available, based on thin-film cells. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Electrical connections are made <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|in series] to achieve a desired output voltage and/or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|in parallel] to provide a desired amount of current source capability. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Separate <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|diodes] may be needed to avoid reverse currents, in case of partial or total shading, and at night. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|p-n junctions] of mono-crystalline silicon cells may have adequate reverse current characteristics that these are not necessary. Reverse currents waste power and can also lead to overheating of shaded cells. Solar cells become less efficient at higher temperatures and installers try to provide good ventilation behind solar panels. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[1]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Some recent solar panel designs include <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|concentrators] in which light is focused by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|lenses] or mirrors onto an array of smaller cells. This enables the use of cells with a high cost per unit area (such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|gallium arsenide] ) in a cost-effective way. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Depending on construction, photovoltaic panels can produce electricity from a range of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|frequencies of light], but usually cannot cover the entire solar range (specifically, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ultraviolet] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|infrared] and low or<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|diffused light] ). Hence much of the incident <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sunlight] energy is wasted by solar panels, and they can give far higher efficiencies if illuminated with monochromatic light. Therefore another design concept is to split the light into different wavelength ranges and direct the beams onto different cells tuned to those ranges. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[2]] This has been projected to be capable of raising efficiency by 50%. The use of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|infrared photovoltaic cells] has also been proposed to increase efficiencies, and perhaps produce power at night. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Sunlight conversion rates] (solar panel efficiencies) can vary from 5-18% in commercial products, typically lower than the efficiencies of their cells in isolation. Panels with conversion rates around 18% are in development incorporating innovations such as power generation on the front and back sides. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy Density] of a solar panel is the efficiency described in terms of peak power output per unit of surface area, commonly expressed in units of Watts per square foot (W/ft2). The energy density of the most efficient mass produced solar panels are over 13 W/ft2. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Crystalline silicon modules  == //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Cell] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Most solar modules are currently produced from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|silicon] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PV cells]. These are typically categorized into either <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|monocrystalline] or<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|multicrystalline] modules. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Thin-film modules  == //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thin film solar cell], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Third generation solar cell] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Low-cost photovoltaic cell] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Third generation solar cells are advanced thin-film cells. They produce high-efficiency conversion at low cost. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Rigid thin-film modules ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In **rigid thin film modules**, the cell and the module are manufactured in the same production line. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The cell is created on a glass <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|substrate] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|superstrate], and the electrical connections are created //in situ//, a so called "<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|monolithic integration] ". The substrate or superstrate is <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|laminated] with an <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|encapsulant] to a front or back <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sheet], usually another sheet of glass. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The main cell technologies in this category are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|CdTe], or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|a-Si] , or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|a-Si+uc-Si tandem] , or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|CIGS] (or variant). Amorphous silicon has a sunlight conversion rate of 6-12%. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Flexible thin-film modules ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">**Flexible thin film** cells and modules are created on the same production line by depositing the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photoactive layer] and other necessary <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|layers] on a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|flexible substrate]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">If the substrate is an <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|insulator] (e.g. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|polyester] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|polyimide] film) then <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|monolithic] integration can be used. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">If it is a conductor then another technique for electrical connection must be used. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The cells are assembled into modules by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|laminating] them to a transparent colourless <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fluoropolymer] on the front side (typically <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ETFE] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|FEP] ) and a polymer suitable for bonding to the final substrate on the other side. The only commercially available (in MW quantities) flexible module uses <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|amorphous silicon] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|triple junction] (from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Unisolar] ). <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">So-called <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|inverted metamorphic] (IMM) <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|multijunction solar cells] made on <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|compound-semiconductor technology] are just becoming commercialized in July 2008. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|University of Michigan] 's <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar car] that won the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|North American Solar challenge] in July 2008 used IMM thin-film flexible solar cells. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The requirements for residential and commercial are different in that the residential needs are simple and can be packaged so that as technology at the solar cell progress, the other base line equipment such as the battery, inverter and voltage sensing transfer switch still need to be compacted and unitized for residential use. Commercial use, depending on the size of the service will be limited in the photovoltaic cell arena, and more complex parabolic reflectors and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar concentrators] are becoming the dominant technology. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The global flexible and thin-film photovoltaic (PV) market, despite caution in the overall PV industry, is expected to experience a CAGR of over 35% to 2019, surpassing 32 GW according to a major new study by IntertechPira. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[3]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Module embedded electronics  == //See also: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Microinverter] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Several companies have begun embedding electronics into PV modules. This enables performing Maximum Power Point Tracking (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|MPPT] ) for each module individually, and the measurement of performance data for monitoring and fault detection at module level. Some of these solutions make use of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Power Optimizers], a DC to DC converter technology developed to maximize the power harvest from solar photovoltaic systems. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Module performance and lifetime  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Module performance is generally rated under Standard Test Conditions (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|STC] ) : <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|irradiance] of 1,000 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|W/m²], solar <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|spectrum] of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|AM] 1.5 and module temperature at 25°C. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Electrical characteristics include nominal power (P MAX, measured in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|W] ), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|open circuit voltage] (V OC ), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|short circuit current] (I SC , measured in<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|amperes] ), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|maximum power voltage] (V MPP ), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|maximum power current] (I MPP ), peak power, kW p , and module efficiency (%). <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Nominal voltage refers to the voltage of the battery that the module is best suited to charge; this is a leftover term from the days when solar panels were used only to charge batteries. The actual voltage output of the panel changes as lighting, temperature and load conditions change, so there is never one specific voltage at which the panel operates. Nominal voltage allows users, at a glance, to make sure the panel is compatible with a given system. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Open circuit voltage or V OC is the maximum voltage that the panel can produce when not connected to an electrical circuit or system. V OC can be measured with a meter directly on an illuminated panel's terminals or on its disconnected cable. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[4]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The peak power rating, kW p, is the maximum output according to STC (not the maximum possible output). <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Solar panels must withstand heat, cold, rain and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hail] for many years. Many <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|crystalline silicon] module manufacturers offer a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|warranty] that guarantees electrical production for 10 years at 90% of rated power output and 25 years at 80%. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[5]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Production  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">7.5 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GW] of installations were completed and connected in 2009. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|IMS Research] estimates that <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|shipments] of PV modules were far higher. Shipments exceeded installations due to the record amount of modules shipped in the final quarter of the year to serve installations completed in the first quarter of 2010 in booming European markets such as Germany, Italy, France and Czech Republic. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Top ten ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Top ten suppliers (by power) in 2009 were: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Price  == //See also: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Grid parity] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Average pricing information divides in three pricing categories: those buying small quantities (modules of all sizes in the kilowatt range annually), mid-range buyers (typically up to 10 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|MWp] annually), and large quantity buyers (self explanatory—and with access to the lowest prices). Over the long term—and only in the long-term—there is clearly a systematic reduction in the price of cells and modules. For example in 1998 it was estimated that the quantity <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cost per watt] was about $4.50, which was 33 times lower than the cost in 1970 of $150. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[7]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[8]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Following to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RMI], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Balance-of-System] (BoS) elements, this is, non-module cost of non-<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|microinverter] solar panels (as wiring, converters, racking systems and various components) make up about half of the total costs of installations. Also, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|standardizing] technologies could encourage greater adoption of solar panels and, in turn, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|economies of scale]. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Mounting Systems  == ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Trackers ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar Trackers] increase the amount of energy produced per panel. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Fixed Racks ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Fixed racks hold panels in a single location as the sun moves across the sky. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The fixed rack sets the angle at which the panel is held. Tilt angles equivalent to an installation's latitude is common. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Standards  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Standards generally used in photovoltaic panels: ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Devices with photovoltaic modules  == //Further information: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar panels on spacecraft] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar charger] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Electric devices that includes solar panels: <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Space stations] and various <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|spacecraft] employ, or have employed photovoltaic panels to generate power. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> See also  == <span style="border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #aaaaaa; border-left-style: solid; border-left-width: 1px; border-right-color: #aaaaaa; border-right-style: solid; border-right-width: 1px; border-top-color: #aaaaaa; border-top-style: solid; border-top-width: 1px; clear: right; display: block; float: right; margin-bottom: 0.5em; margin-left: 0.5em; margin-right: 0px; margin-top: 0.5em;"> ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> References  == ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> External links  ==
 * ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; border-width: initial; color: black; display: inline; font-size: 12px; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; width: auto;">**Contents** ==
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2 Crystalline silicon modules]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3 Thin-film modules]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3.1 Rigid thin-film modules]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3.2 Flexible thin-film modules]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|4 Module embedded electronics]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|5 Module performance and lifetime]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|6 Production]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|6.1 Top ten]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|7 Price]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|8 Mounting Systems]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|8.1 Trackers]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|8.2 Fixed Racks]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|9 Standards]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|10 Devices with photovoltaic modules]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|11 See also]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|12 References]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|13 External links] ||
 * 1) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|First Solar]
 * 2) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Suntech]
 * 3) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sharp]
 * 4) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Yingli]
 * 5) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Trina Solar]
 * 6) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sunpower Corporation]
 * 7) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kyocera Corporation]
 * 8) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Canadian Solar]
 * 9) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SolarWorld] AG
 * 10) <span style="line-height: 1.5em; list-style-image: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sanyo Electric]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|IEC] 61215 (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|crystalline silicon] performance), 61646 (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|thin film] performance) and 61730 (all modules, safety)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|ISO 9488] Solar energy—Vocabulary.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|UL] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|1703]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|CE mark]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Electrical Safety Tester] (EST) Series (EST-460, EST-22V, EST-22H, EST-110).
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Solar cell phone] : <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sharp] announced that its first solar-powered cell phone would be released in summer, 2009. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[9]]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar lamp]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Solar notebook] : IUNIKA makes the first Solar Powered Netbook, the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Gyy] . <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[10]]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar-pumped laser]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar vehicle]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar plane]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Soyuz spacecraft]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|International Space Station]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Skylab] space laboratory
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Mir] space station
 * = <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Wiki_letter_w_cropped.svg/20px-Wiki_letter_w_cropped.svg.png width="20" height="14" caption="Wiki letter w cropped.svg" link="http://en.wikipedia.org/wiki/File:Wiki_letter_w_cropped.svg"]] || This section requires <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none;">[|expansion] . ||
 * = <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Wind-turbine-icon.svg/28px-Wind-turbine-icon.svg.png width="28" height="28" link="http://en.wikipedia.org/wiki/File:Wind-turbine-icon.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy portal] **// ||
 * = <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Crystal_energy.svg/29px-Crystal_energy.svg.png width="29" height="28" link="http://en.wikipedia.org/wiki/File:Crystal_energy.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy portal] **// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Building-integrated photovoltaic] (BIPV).
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Cleaning event] (Mars Exploration Rover phenomenon)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Distributed inverter architecture]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Domestic energy consumption] ; supplies energy requirement numbers for private homes which is needed for anyone thinking of installing their own PV solar panels
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Insulated glazing]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Moore's Law]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Photovoltaics] e.g. applications
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Photovoltaic system]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of photovoltaics companies]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sky footage]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Smart grid]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar roadway]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|Superstrate]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|UV degradation]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar pond]
 * 1) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Diodes"] . Kpsec.freeuk.com . Retrieved 2010-10-18.
 * 2) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|STO: Very High Efficient Solar Cells]
 * 3) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Global flexible and thin-film PV market expected to reach US$58b in 2019,reports by IntertechPira study"] . Globalsolartechnology. 2009-09-11.
 * 4) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Introduction to Solar Electricity and Residential Solar Panels – AltE"] . //altestore.com// . Retrieved September 3, 2010.
 * 5) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"CTI Solar sales brochure"] . //cti-solar.com// . Retrieved September 3, 2010.
 * 6) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"IMS Market Research – Press"] . Pvmarketresearch.com. 2010-05-05 . Retrieved 2010-10-18.
 * 7) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|//Harnessing Light//] . National Research Council. 1998. p. 162.
 * 8) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Paula Mints (24 September 2009). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Module Pricing: Rational, Or Just Plain Nuts?"] . //Photovoltaics World Magazine//.
 * 9) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Transition from Coal- to Solar-powered cell phones this summer « SET Energy"] . Setenergy.org. 2009-04-21 . Retrieved 2010-10-18.
 * 10) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Meet Gyy, The First Solar Powered Netbook"] . PCWorld. 2009-05-15 . Retrieved 2010-10-18.
 * = [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png width="30" height="40"]] || Wikimedia Commons has media related to: //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|Photovoltaics] **// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|The Next Solar Frontier: Distributed Inverter Architecture]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Solar Power Calculator]

From []

=<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 1.6em; font-weight: normal; line-height: 1.2em; margin-bottom: 0.1em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-top: 0px; width: auto;">Petroleum industry = From Wikipedia, the free encyclopedia <span style="color: #7d7d7d; display: block; font-size: 11px; line-height: 1.2em; margin-bottom: 1.4em; margin-left: 1em; margin-right: 0px; margin-top: 0px; width: auto;"> <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 402px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> The distribution of oil and natural gas reserves among the world's 50 largest oil companies. The reserves of the privately owned companies are grouped together. The oil produced by the "supermajor" companies accounts for less than 15% of the total world supply. Over 80% of the world's reserves of oil and natural gas are controlled by national oil companies. Of the world's 20 largest oil companies, 15 are state-owned. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[1]]    <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 402px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;">  World <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil reserves], 2009. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The **petroleum industry** includes the global processes of<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|exploration], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|extraction] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|refining] , transporting (often by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil tankers] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pipelines] ), and marketing <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petroleum] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|products]. The largest volume products of the industry are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fuel oil] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|gasoline] (petrol). Petroleum is also the raw material for many <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|chemical products], including pharmaceuticals, solvents, fertilizers, pesticides, and plastics. The industry is usually divided into three major components: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|upstream], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|midstream] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|downstream]. Midstream operations are usually included in the downstream category. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Petroleum is vital to many <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|industries], and is of importance to the maintenance of industrial <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|civilization] itself, and thus is a critical concern for many nations. Oil accounts for a large percentage of the world’s energy consumption, ranging from a low of 32% for<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Europe] and Asia, up to a high of 53% for the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Middle East]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Other geographic regions’ consumption patterns are as follows:<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|South] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Central America] (44%), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Africa] (41%), and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|North America] (40%). The world consumes 30 billion <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|barrels] (4.8 km³) of oil per year, with developed nations being the largest consumers. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States] consumed 25% of the oil produced in 2007. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[2]] The production, distribution, refining, and retailing of petroleum taken as a whole represents the world's largest industry in terms of dollar value. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Governments such as the United States government provide a heavy public subsidy to petroleum companies, with major tax breaks at virtually every stage of oil exploration and extraction, including for the costs of oil field leases and drilling equipment. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[3]] * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1 History] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> History  == ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Natural history ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Petroleum is a naturally occurring liquid found in rock formations. It consists of a complex mixture of hydrocarbons of various molecular weights, plus other organic compounds. It is generally accepted that oil, formed mostly from the carbon rich remains of ancient plankton after exposure to heat and pressure in the Earth's crust over hundreds of millions of years. Over time, the decayed residue was covered by layers of mud and silt, sinking further down into the Earth’s crust and preserved there between hot and pressured layers, gradually transforming into oil reservoirs. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Early history ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum] in an unrefined state has been utilized by humans for over 5000 years. Oil in general has been used since early <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|human history] to keep fires ablaze, and also for <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|warfare]. Ancient <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Persian language] tablets indicate the medicinal and lighting uses of petroleum in the upper echelons of their society. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ancient China] was also known to burn skimmed oil for light. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">An early petroleum industry was established in the 8th century, when the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|streets] of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Baghdad] were paved with <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|tar], derived from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petroleum] through <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|destructive distillation]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[4]]  In the 9th century, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil fields] were exploited in the area around modern <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Baku], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Azerbaijan] , to produce <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|naphtha]. These fields were described by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|al-Masudi] in the 10th century, and by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Marco Polo] in the 13th century, who described the output of those <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil wells] as hundreds of shiploads. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[4]] Petroleum was <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|distilled] by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|al-Razi] in the 9th century, producing chemicals such as<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kerosene] in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|alembic], which he used to invent <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kerosene lamps] for use in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil lamp] industry. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[5]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Its importance in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|world economy] evolved slowly, with <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|whale oil] used for lighting into the 19th century, and wood and coal used for heating and cooking well into the 20th Century. A petroleum industry emerged in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|North America] in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada] and the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States]. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Industrial Revolution] generated an increasing need for energy which was fueled mainly by coal, with other sources including whale oil. However, it was discovered that kerosene could be extracted from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|crude oil] and used as a light and heating fuel. Petroleum was in great demand, and by the twentieth century had become the most valuable commodity traded on the world market. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Modern history ** === //See also: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Baku oil boom] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|The Petroleum Trail International Tourist Trail] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 252px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Galician] oil wells <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Imperial Russia] produced 3,500 tons of oil in 1825 and doubled its output by mid-century. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[7]] After oil drilling began in what is now <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Azerbaijan] in 1848, two large pipelines were built in the<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Russian Empire] : the 833 km long pipeline to transport oil from the Caspian to the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Black Sea] port of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Batumi] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Baku-Batumi pipeline] ), completed in 1906, and the 162 km long pipeline to carry oil from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Chechnya] to the Caspian. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">At the turn of the 20th century, Imperial Russia's output of oil, almost entirely from the<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Apsheron Peninsula], accounted for half of the world's production and dominated international markets. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[8]] Nearly 200 small refineries operated in the suburbs of Baku by 1884. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[9]] As a side effect of these early developments, the Apsheron Peninsula emerged as the world's "oldest legacy of oil pollution and environmental negligence." <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[10]] In 1878, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ludvig Nobel] and his<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Branobel] company "revolutionized oil transport" by commissioning the first <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil tanker] and launching it on the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Caspian Sea]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[8]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The first modern oil refineries were built by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ignacy Łukasiewicz] near <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Jasło] (then in the dependent <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kingdom of Galicia and Lodomeria] in<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Central European Galicia] ), Poland from 1854–56. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[11]] These were initially small as demand for refined fuel was limited. The refined products were used in artificial asphalt, machine oil and lubricants, in addition to Łukasiewicz's kerosene lamp. As kerosene lamps gained popularity, the refining industry grew in the area. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The first large oil refinery opened at <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ploieşti], Romania in 1856. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The first oil drilling in the United States began in 1859, when oil was successfully drilled in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Titusville], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pennsylvania]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[12]] In the first quarter of the 20th century, the United States overtook Russia as the world's largest oil producer. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">By the 1920s, oil fields had been established in many countries including Canada, Poland, Sweden, the Ukraine, the United States, and Venezuela. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In the early 1930s <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|the Texas Company] developed the first mobile steel barges for drilling in the brackish coastal areas of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Persian Gulf]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In 1937 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pure Oil Company] (now part of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Chevron Corporation] ) and its partner <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Superior Oil Company] (now part of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ExxonMobil Corporation] ) used a fixed platform to develop a field in 14 feet of water, one mile offshore of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Calcasieu Parish, Louisiana]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In early 1947 Superior Oil erected a drilling/production <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil platform] in 20 ft of water some 18 miles off <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Vermilion Parish, Louisiana]. But it was <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kerr-McGee] Oil Industries (now <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Anadarko Petroleum Corporation] ), as operator for partners <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Phillips Petroleum] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ConocoPhillips] ) and<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Stanolind Oil & Gas] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BP] ), that completed its historic Ship Shoal Block 32 well in October 1947, months before Superior actually drilled a discovery from their Vermilion platform farther offshore. In any case, that made Kerr-McGee's well the first oil discovery drilled out of sight of land. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[13]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[14]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">After <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|World War II] ended, the countries of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Middle East] took the lead in oil production from the United States. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Industry structure  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|American Petroleum Institute] divides the petroleum industry into five sectors: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[15]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil companies] used to be classified by sales as //"<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|supermajors] "// (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BP], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Chevron] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ExxonMobil] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ConocoPhillips] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Shell] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Eni] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Total S.A.] ),//"majors,"// and //"independents" or "jobbers."// In recent years however, National Oil Companies (NOC, as opposed to IOC, International Oil Companies) have come to control the rights over the largest oil reserves; by this measure the top ten companies all are NOC. The following table shows the ten largest oil companies ranked by reserves <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[16]] and by production. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[17]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Most upstream work in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil field] or on an <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil well] is <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|contracted] out to drilling contractors and oil field service companies. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Public subsidy  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The United States government provides a large subsidy to oil companies, with major tax breaks at virtually every stage of oil exploration and extraction. Capital expenses, including the costs of oil field leases and drilling equipment, are taxed at an effective rate of nine percent, which is a much lower rate than the 25% rate for general business taxes and lower than the taxes of virtually any other industry, according to a 2005 study by the non-partisan <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Congressional Budget Office]. For example, while the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Deepwater Horizon] oil rig was registered in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Marshall Islands], since registering off-shore lowered the U.S. tax liability, the U.S. government was giving the rig's owner, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|British Petroleum] (BP), a major tax break when BP leased the rig: 70% of the rent was written off in the form of a tax break used only by the oil industry, for a tax deduction of more than $225,000 per day from the day the lease began. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[3]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Environmental impact and future shortages  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Some petroleum industry operations have been responsible for <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|water pollution] through by-products of refining and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil spills]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The combustion of fossil fuels produces <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|greenhouse gases] and other air pollutants as by-products. Pollutants include <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|nitrogen oxides] ,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sulphur dioxide], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|volatile organic compounds] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heavy metals]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">As petroleum is a non-renewable <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|natural resource] the industry is faced with an inevitable eventual depletion of the world's oil supply. The BP Statistical Review of World Energy 2007 listed the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|reserve/production ratio] for proven resources worldwide. The study placed the prospective life span of proven reserves in the Middle East at 79.5 years, Latin America at 41.2 years and North America at only 12 years. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hubbert peak theory], which introduced the concept of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|peak oil] , questions the sustainability of oil production. It suggests that after a peak in oil production rates, a period of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil depletion] will ensue. Since virtually all economic sectors rely heavily on petroleum, peak oil could lead to a partial or complete failure of markets. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[18]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">According to research by IBISWorld, biofuels (primarily ethanol, but also biodiesel) will continue to supplement petroleum. However output levels are low, and these fuels will not displace local oil production. More than 90% of the ethanol used in the US is blended with gasoline to produce a 10% ethanol mix, lifting the oxygen content of the fuel. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[19]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Petroleum industry in popular culture  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The petroleum industry's influence on modern society has made it a favorite subject in contemporary literature and film. Most notably films such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|There Will Be Blood] (2007) set around Southern California's oil boom of the late 19th and early 20th centuries and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Syriana] (2005) set in present-day Middle-East. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> See also  == <span style="border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #aaaaaa; border-left-style: solid; border-left-width: 1px; border-right-color: #aaaaaa; border-right-style: solid; border-right-width: 1px; border-top-color: #aaaaaa; border-top-style: solid; border-top-width: 1px; clear: right; display: block; float: right; margin-bottom: 0.5em; margin-left: 0.5em; margin-right: 0px; margin-top: 0.5em;"> **Environmental issues** **Financial and political** **Oil geology** **Oil-producing areas** **Industry Research Projects** ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> References  == ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Further reading  == From []
 * ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; border-width: initial; color: black; display: inline; font-size: 12px; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; width: auto;">**Contents** ==
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1.1 Natural history]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1.2 Early history]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1.3 Modern history]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2 Industry structure]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3 Public subsidy]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|4 Environmental impact and future shortages]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|5 Petroleum industry in popular culture]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|6 See also]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|7 References]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|8 Further reading] ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|upstream] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|exploration], development and production of crude oil or natural gas)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|downstream] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil tankers], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|refiners] , retailers and consumers)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pipeline]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">marine
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">service and supply
 * Top 10 largest world oil companies by reserves and production**||~ Rank<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum_industry#"]] ||~ Company<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum_industry#"]] ||~ Worldwide Liquids Reserves (10 9 bbl)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum_industry#"]] ||~ Worldwide Natural Gas Reserves (10 12 ft 3 )<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum_industry#"]] ||~ Total Reserves in Oil Equivalent Barrels (10 9 bbl)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum_industry#"]] ||~ Company<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum_industry#"]] ||~ Production (10 6 bbl/d)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum_industry#"]] ||
 * 1 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Saudi Aramco] || 260 || 254 || 303 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Saudi Aramco] || 11.0 ||
 * 2 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|National Iranian Oil Company] || 138 || 948 || 300 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|National Iranian Oil Company] || 4.0 ||
 * 3 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Qatar Petroleum] || 15 || 905 || 170 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kuwait Petroleum Corporation] || 3.7 ||
 * 4 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Iraq National Oil Company] || 116 || 120 || 134 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Iraq National Oil Company] || 2.7 ||
 * 5 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petróleos de Venezuela] || 99 || 171 || 129 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petróleos de Venezuela] || 2.6 ||
 * 6 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Abu Dhabi National Oil Company] || 92 || 199 || 126 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Abu Dhabi National Oil Company] || 2.6 ||
 * 7 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kuwait Petroleum Corporation] || 102 || 56 || 111 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petróleos Mexicanos] || 2.5 ||
 * 8 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nigerian National Petroleum Corporation] || 36 || 184 || 68 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nigerian National Petroleum Corporation] || 2.3 ||
 * 9 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Libya NOC] || 41 || 50 || 50 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Libya NOC] || 2.1 ||
 * 10 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sonatrach] || 12 || 159 || 39 || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Lukoil] || 1.9 ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Crystal_energy.svg/29px-Crystal_energy.svg.png width="29" height="28" caption="Crystal energy.svg" link="http://en.wikipedia.org/wiki/File:Crystal_energy.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy portal] **// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Instrumentation in petrochemical industries]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of crude oil products]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of petroleum companies]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil depot]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil refinery]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil supplies]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil well]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Integrated operations]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Standardisation in oil industry]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Greenhouse gases]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum disasters]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Chronology of world oil market events (1970-2005)]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy crisis] : <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1973 energy crisis], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1979 energy crisis]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy development]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum politics]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil imperialism]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil price increases since 2003]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil-storage trade]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Peak oil]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil and gas law in the United States]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Abiogenic petroleum origin]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Fossil fuel]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil sands]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum geology]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thermal depolymerization]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|History of the petroleum industry in Canada]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|History of the petroleum industry in the United States]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of oil fields]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil Megaprojects]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of oil-producing states]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil industry in Azerbaijan]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|TaskForceMajella]
 * 1) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Yergin, The Prize, p. 770, 2009
 * 2) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** "The World Factbook". **Country Comparison - Oil Consumption**. Found at <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/en/0/00/Lock_icon_blue.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 16px; text-decoration: none;">[]
 * 3) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] New York Times, 2010 July 3, "As Oil Industry Fights a Tax, It Reaps Subsidies,"<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[]
 * 4) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] K. Ajram (1992), //Miracle of Islamic Science//, Appendix B, Knowledge House Publishers, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN 0911119434]
 * 5) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Zayn Bilkadi (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|University of California, Berkeley] ), "The Oil Weapons", //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Saudi Aramco World] //, January–February 1995, p. 20-27.
 * 6) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Halliday, Fred. The Middle East in International Relations: Power and Ideology. Cambridge University Pres: USA, 270
 * 7) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** N.Y. Krylov, A.A. Bokserman, E.R.Stavrovsky. //The Oil Industry of the Former Soviet Union//. CRC Press, 1998. Page 187.
 * 8) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] Shirin Akiner, Anne Aldis. //The Caspian: Politics, Energy and Security//. Routledge, 2004. Page 5.
 * 9) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** United States Congress, Joint Economic Committee. //The Former Soviet Union in Transition//. M.E. Sharpe, 1993. Page 463.
 * 10) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Quoted from: Tatyana Saiko. //Environmental Crises//. Pearson Education, 2000. Page 223.
 * 11) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Frank, Alison Fleig (2005). //Oil Empire: Visions of Prosperity in Austrian Galicia (Harvard Historical Studies)//. Harvard University Press. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|0-674-01887-7].
 * 12) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|John Steele Gordon] "10 Moments That Made American Business," //American Heritage//, February/March 2007.
 * 13) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Ref accessed 02-12-89 by technical aspects and coast mapping. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kerr-McGee]
 * 14) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Project Redsand]
 * 15) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** American Petroleum Institute. "Industry Sectors." <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[] Retrieved 12 May 2008
 * 16) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Ranked in order of 2007 worldwide oil equivalent reserves as reported in "OGJ 200/100", Oil & Gas Journal, September 15, 2008. Url=<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[]
 * 17) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"The Market Position of National Oil Companies"] (PDF). //The Role of National Oil Companies in the International Oil Market//. Congressional Research Service. August 2007 . Retrieved 2009-09-17 . Ranking by oil reserves and production, 2006 values
 * 18) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** "<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|German Military Braces for Scarcity After ‘Peak Oil’] ". //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|The New York Times] //. September 9, 2010.
 * 19) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** IBISWorld. "US Oil Drilling Industry Market Research Report." <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[] Retrieved 14 May 2008
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Ordons Oil & Gas Information & News] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|http://www.ordons.com]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Robert Sobel] //The Money Manias: The Eras of Great Speculation in America, 1770-1970// (1973) reprinted (2000).
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Daniel Yergin], //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|The Prize: The Epic Quest for Oil, Money, and Power] //, (Simon and Schuster 1991; paperback, 1993), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN 0-671-79932-0].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">Matthew R. Simmons, //Twilight in the Desert The Coming Saudi Oil Shock and the World Economy//, John Wiley & Sons, 2005, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN 0-471-73876-X].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">Matthew Yeomans, //Oil: Anatomy of an Industry// (New Press, 2004), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN 1-56584-885-3].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">Smith, GO (1920): Where the World Gets Its Oil: National Geographic, February 1920, pp 181–202
 * ||||~ [<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|show] ]  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|v] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|d] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|e]    ** Petroleum industry ** || ||

=<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 1.6em; font-weight: normal; line-height: 1.2em; margin-bottom: 0.1em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-top: 0px; width: auto;">Petroleum =

From Wikipedia, the free encyclopedia <span style="color: #7d7d7d; display: block; font-size: 11px; line-height: 1.2em; margin-bottom: 1.4em; margin-left: 1em; margin-right: 0px; margin-top: 0px; width: auto;"> //For other uses, see <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum (disambiguation)] .// <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pumpjack] pumping an oil well near<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Lubbock, Texas]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">**Petroleum** (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|L.] //petroleum//, from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Greek] : petra (rock) + //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Latin] :// oleum (oil) <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[1]] ) or **crude oil** is a naturally occurring, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|flammable] liquid consisting of a complex mixture of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrocarbons] of various molecular weights and other liquid <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|organic compounds], that are found in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|geologic formations] beneath the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Earth's] surface. Petroleum is recovered mostly through <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil drilling] .This latter stage comes after studies of structural geology (at the reservoir scale), sedimentary basin analysis, reservoir characterization (mainly in terms of porosity and permeable structures). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[2]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[3]]  It is refined and separated, most easily by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|boiling point], into a large number of consumer products, from<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|gasoline] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kerosene] to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|asphalt] and chemical <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|reagents] used to make <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|plastics] and<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pharmaceuticals]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[4]] Petroleum is often attributed as the "Mother of all Commodities" because of its importance in the manufacture of a wide variety of materials. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[4]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The term //petroleum// is found (in the spelling "petraoleum") in tenth-century Old English sources. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[5]] It was used in the treatise //De Natura Fossilium//, published in 1546 by the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|German] mineralogist<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Georg Bauer], also known as Georgius Agricola. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]] In the 19th Century, the term //petroleum// was frequently used to refer to mineral oils produced by distillation from mined organic solids such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cannel coal] (and later <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil shale] ), and refined oils produced from them; in the United Kingdom storage (and later transport) of these oils were regulated by a series of Petroleum Acts, from the //Petroleum Act 1862// c. 66 onward. <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 402px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Proven world <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil reserves], 2009. * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1 Composition] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Composition  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In its strictest sense, petroleum includes only crude oil, but in common usage it includes all liquid, gaseous, and solid (e.g., paraffin)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrocarbons]. Under surface <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pressure and temperature conditions], lighter hydrocarbons <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|methane] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ethane] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|propane] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|butane] occur as gases, while <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pentane] and heavier ones are in the form of liquids or solids. However, in an underground <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil reservoir] the proportions of gas, liquid, and solid depend on subsurface conditions and on the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|phase diagram] of the petroleum mixture. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[7]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">An <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil well] produces predominantly crude oil, with some natural gas <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|dissolved] in it. Because the pressure is lower at the surface than underground, some of the gas will come out of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solution] and be recovered (or burned) as //associated gas// or //solution gas//. A <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|gas well] produces predominantly natural gas. However, because the underground temperature and pressure are higher than at the surface, the gas may contain heavier hydrocarbons such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pentane], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hexane] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heptane] in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|gaseous state]. At surface conditions these will <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|condense] out of the gas to form <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|natural gas condensate], often shortened to //condensate.// Condensate resembles <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petrol] in appearance and is similar in composition to some <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|volatile] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|light crude oils]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The proportion of light hydrocarbons in the petroleum mixture varies greatly among different <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil fields], ranging from as much as 97% by weight in the lighter oils to as little as 50% in the heavier oils and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|bitumens]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The hydrocarbons in crude oil are mostly <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|alkanes], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cycloalkanes] and various <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|aromatic hydrocarbons] while the other organic compounds contain <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|nitrogen] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oxygen] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sulfur] , and trace amounts of metals such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|iron] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|nickel] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|copper] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|vanadium]. The exact molecular composition varies widely from formation to formation but the proportion of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|chemical elements] vary over fairly narrow limits as follows: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[8]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Four different types of hydrocarbon molecules appear in crude oil. The relative percentage of each varies from oil to oil, determining the properties of each oil. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[7]] <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 252px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Most of the world's oils are non-conventional. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[9]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Crude oil varies greatly in appearance depending on its composition. It is usually black or dark brown (although it may be yellowish, reddish, or even greenish). In the reservoir it is usually found in association with <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|natural gas], which being lighter forms a gas cap over the petroleum, and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|saline water] which, being heavier than most forms of crude oil, generally sinks beneath it. Crude oil may also be found in semi-solid form mixed with sand and water, as in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Athabasca oil sands] in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada], where it is usually referred to as crude <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|bitumen]. In Canada, bitumen is considered a sticky, black, tar-like form of crude oil which is so thick and heavy that it must be heated or diluted before it will flow. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[10]] Venezuela also has large amounts of oil in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Orinoco oil sands], although the hydrocarbons trapped in them are more fluid than in Canada and are usually called <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|extra heavy oil]. These oil sands resources are called <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|unconventional oil] to distinguish them from oil which can be extracted using traditional oil well methods. Between them, Canada and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Venezuela] contain an estimated 3.6 trillion barrels (570 × 10 9 m 3 ) of bitumen and extra-heavy oil, about twice the volume of the world's reserves of conventional oil. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[11]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Petroleum is used mostly, by volume, for producing <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fuel oil] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petrol], both important //"<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|primary energy] "// sources. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[12]] 84% by volume of the hydrocarbons present in petroleum is converted into energy-rich fuels (petroleum-based fuels), including petrol, diesel, jet, heating, and other fuel oils, and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|liquefied petroleum gas]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[13]] The lighter grades of crude oil produce the best yields of these products, but as the world's reserves of light and medium oil are depleted, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil refineries] are increasingly having to process heavy oil and bitumen, and use more complex and expensive methods to produce the products required. Because heavier crude oils have too much carbon and not enough hydrogen, these processes generally involve removing carbon from or adding hydrogen to the molecules, and using <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fluid catalytic cracking] to convert the longer, more complex molecules in the oil to the shorter, simpler ones in the fuels. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Due to its high <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|energy density], easy <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|transportability] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|relative abundance] , oil has become the world's most important source of energy since the mid-1950s. Petroleum is also the raw material for many <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|chemical] products, including <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pharmaceuticals], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solvents] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fertilizers] ,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pesticides] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|plastics] ; the 16% not used for energy production is converted into these other materials. Petroleum is found in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|porous] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|rock formations] in the upper <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|strata] of some areas of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Earth] 's <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|crust]. There is also petroleum in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil sands (tar sands)]. Known <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil reserves] are typically estimated at around 190 km 3 (1.2 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|trillion] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|(short scale)] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|barrels] ) without oil sands, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[14]] or 595 km 3 (3.74 trillion barrels) with oil sands. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[15]] Consumption is currently around 84 million barrels (13.4 × 10  6 m 3 ) per day, or 4.9 km 3 per year. Which in turn yields a remaining oil supply of only about 120 years, if current demand remain static. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Chemistry  == <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Octane], a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrocarbon] found in petroleum. Lines represent <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|single bonds] ; black spheres represent <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|carbon] ; white spheres represent <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrogen]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Petroleum is a mixture of a very large number of different <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrocarbons] ; the most commonly found molecules are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|alkanes] (linear or branched), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cycloalkanes], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|aromatic hydrocarbons] , or more complicated chemicals like <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|asphaltenes]. Each petroleum variety has a unique mix of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|molecules], which define its physical and chemical properties, like color and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|viscosity]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The //alkanes//, also known as //paraffins//, are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|saturated] hydrocarbons with straight or branched chains which contain only <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|carbon] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrogen] and have the general formula C n H 2n+2. They generally have from 5 to 40 carbon atoms per molecule, although trace amounts of shorter or longer molecules may be present in the mixture. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The alkanes from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pentane] (C 5 H 12 ) to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|octane] (C 8 H 18 ) are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|refined] into <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petrol], the ones from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|nonane] (C 9 H 20 ) to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hexadecane] (C 16 H 34 ) into <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|diesel fuel] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kerosene] (primary component of many types of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|jet fuel] ), and the ones from hexadecane upwards into <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fuel oil] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|lubricating oil]. At the heavier end of the range, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|paraffin wax] is an alkane with approximately 25 carbon atoms, while <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|asphalt] has 35 and up, although these are usually <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cracked] by modern refineries into more valuable products. The shortest molecules, those with four or fewer carbon atoms, are in a gaseous state at room temperature. They are the petroleum gases. Depending on demand and the cost of recovery, these gases are either flared off, sold as liquified petroleum gas under pressure, or used to power the refinery's own burners. During the winter, Butane (C 4 H 10 ), is blended into the petrol pool at high rates, because butane's high vapor pressure assists with cold starts. Liquified under pressure slightly above atmospheric, it is best known for powering cigarette lighters, but it is also a main fuel source for many developing countries. Propane can be liquified under modest pressure, and is consumed for just about every application relying on petroleum for energy, from cooking to heating to transportation. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The //cycloalkanes//, also known as //naphthenes//, are saturated hydrocarbons which have one or more carbon rings to which hydrogen atoms are attached according to the formula C n H 2n. Cycloalkanes have similar properties to alkanes but have higher boiling points. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The //aromatic hydrocarbons// are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|unsaturated hydrocarbons] which have one or more planar six-carbon rings called <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|benzene rings], to which hydrogen atoms are attached with the formula C n H n. They tend to burn with a sooty flame, and many have a sweet aroma. Some are<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|carcinogenic]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">These different molecules are separated by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fractional distillation] at an oil refinery to produce petrol, jet fuel, kerosene, and other hydrocarbons. For example, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2,2,4-Trimethylpentane] (isooctane), widely used in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petrol], has a chemical formula of C 8 H 18 and it reacts with oxygen <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|exothermically] : <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[16]] 2 C 8 H 18 (//l//) + 25 O 2 (//g//) → 16 CO 2 (//g//) + 18 H 2 O(//g//) + 10.86 MJ/mol (of octane) <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The amount of various molecules in an oil sample can be determined in laboratory. The molecules are typically extracted in a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solvent], then separated in a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|gas chromatograph] , and finally determined with a suitable <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|detector] , such as a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|flame ionization detector] or a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|mass spectrometer]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[17]] Due to the large number of co-eluted hydrocarbons within oil, many cannot be resolved by traditional gas chromatography and typically appear as a hump in the chromatogram. This <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|unresolved complex mixture] (UCM) of hydrocarbons is particularly apparent when analysing weathered oils and extracts from tissues of organisms exposed to oil. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Incomplete combustion of petroleum or petrol results in production of toxic byproducts. Too little oxygen results in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|carbon monoxide]. Due to the high temperatures and high pressures involved, exhaust gases from petrol combustion in car engines usually include <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|nitrogen oxides] which are responsible for creation of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photochemical smog]. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Empirical equations for the thermal properties of petroleum products  == ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Heat of combustion ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">At a constant volume the heat of combustion of a petroleum product can be approximated as follows: <span class="texhtml" style="font-family: 'Times New Roman',serif; font-size: 15px; line-height: 1em; white-space: nowrap;">//Q// //v// = 12,400 − 2,100//d// 2 <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">where <span class="texhtml" style="font-family: 'Times New Roman',serif; font-size: 15px; line-height: 1em; white-space: nowrap;">//Q// //v// is measured in cal/gram and d is the specific gravity at 60 °F (16 °C). ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Thermal conductivity ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The thermal conductivity of petroleum based liquids can be modeled as follows: ,547 <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">where K is measured in BTU **·** hr −1 ft −2, t is measured in °F and d is the specific gravity at 60 °F (16 °C). ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Specific heat ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The specific heat of a petroleum oils can be modeled as follows: , <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">where c is measured in BTU/lbm-°F, t is the temperature in Fahrenheit and //d// is the specific gravity at 60 °F (16 °C). <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In units of kcal/(kg·°C), the formula is: , <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">where the temperature //t// is in Celsius and //d// is the specific gravity at 15 °C. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Latent heat of vaporization ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The latent heat of vaporization can be modeled under atmospheric conditions as follows: , <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">where L is measured in BTU/lbm, t is measured in °F and d is the specific gravity at 60 °F (16 °C). <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In units of kcal/kg, the formula is: , <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">where the temperature //t// is in Celsius and //d// is the specific gravity at 15 °C. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[18]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Formation  == <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 352px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Structure of vanadium <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|porphyrin] compound extracted from petroleum by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Alfred E. Treibs], father of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|organic geochemistry]. Treibs noted the close structural similarity of this molecule and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|chlorophyll a]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">According to generally accepted theory, petroleum is derived from ancient<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biomass]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[19]] It is a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fossil fuel] derived from ancient <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fossilized] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|organic materials]. The theory was initially based on the isolation of molecules from petroleum that closely resemble known biomolecules. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">More specifically, crude oil and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|natural gas] are products of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heating] of ancient <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|organic materials] (i.e. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kerogen] ) over <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|geological time]. Formation of petroleum occurs from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrocarbon] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pyrolysis], in a variety of mostly<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|endothermic] reactions at high temperature and/or pressure. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[20]] Today's oil formed from the preserved remains of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|prehistoric] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|zooplankton] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|algae], which had settled to a sea or lake bottom in large quantities under <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|anoxic conditions] (the remains of prehistoric <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|terrestrial plants] , on the other hand, tended to form <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|coal] ). Over geological time the organic matter mixed with<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|mud], and was buried under heavy layers of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sediment] resulting in high levels of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heat] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pressure] (diagenesis). This process caused the organic matter to change, first into a waxy material known as kerogen, which is found in various <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil shales] around the world, and then with more heat into liquid and gaseous hydrocarbons via a process known as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|catagenesis]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">There were certain warm nutrient-rich environments such as the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Gulf of Mexico] and the ancient <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Tethys Sea] where the large amounts of organic material falling to the ocean floor exceeded the rate at which it could decompose. This resulted in large masses of organic material being buried under subsequent deposits such as shale formed from mud. This massive organic deposit later became heated and transformed under pressure into oil. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[21]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Geologists often refer to the temperature range in which oil forms as an "oil window" <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[22]] —below the minimum temperature oil remains trapped in the form of kerogen, and above the maximum temperature the oil is converted to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|natural gas] through the process of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|thermal cracking]. Sometimes, oil which is formed at extreme depths may migrate and become trapped at much shallower depths than where it was formed. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Athabasca Oil Sands] is one example of this. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Abiogenic origin ** === //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Abiogenic petroleum origin] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A small number of geologists adhere to the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|abiogenic petroleum origin] hypothesis and maintain that hydrocarbons of purely inorganic origin exist within Earth's interior. Chemists <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Marcellin Berthelot] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Dmitri Mendeleev], as well as astronomer <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thomas Gold] championed the theory in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Western world] by supporting the work done by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nikolai Kudryavtsev] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Vladimir Porfiriev] in the 1950s. It is currently supported primarily by Jack F. Kenney, Vladilen Krayushkin, and Vladimir Kutcherov. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[23]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[24]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The abiogenic origin hypothesis has not yet been ruled out, but it has little support among modern <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petroleum geologists]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[25]] Its advocates consider that it is "still an open question" <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[24]]  Extensive research into the chemical structure of kerogen has identified algae as the primary source of oil. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[26]] The abiogenic origin hypothesis fails to explain the presence of these markers in kerogen and oil, as well as failing to explain how inorganic origin could be achieved at temperatures and pressures sufficient to convert kerogen to graphite. It has not been successfully used in uncovering oil deposits by geologists, as the hypothesis lacks any mechanism for determining where the process may occur. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[27]] More recently scientists at the Carnegie Institution for Science have found that ethane and heavier hydrocarbons can be synthesized under conditions of the upper mantle. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[28]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Crude oil  == ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Crude oil reservoirs ** === <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 142px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Hydrocarbon trap. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Three conditions must be present for oil reservoirs to form: a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|source rock] rich in hydrocarbon material buried deep enough for subterranean heat to cook it into oil; a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|porous] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|permeable] reservoir rock for it to accumulate in; and a cap rock (seal) or other mechanism that prevents it from escaping to the surface. Within these reservoirs, fluids will typically organize themselves like a three-layer cake with a layer of water below the oil layer and a layer of gas above it, although the different layers vary in size between reservoirs. Because most hydrocarbons are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|lighter] than rock or water, they often migrate upward through adjacent rock layers until either reaching the surface or becoming trapped within porous rocks (known as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|reservoirs] ) by impermeable rocks above. However, the process is influenced by underground water flows, causing oil to migrate hundreds of kilometres horizontally or even short distances downward before becoming trapped in a reservoir. When hydrocarbons are concentrated in a trap, an <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil field] forms, from which the liquid can be extracted by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|drilling] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pumping]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The reactions that produce oil and natural gas are often modeled as first order breakdown reactions, where hydrocarbons are broken down to oil and natural gas by a set of parallel reactions, and oil eventually breaks down to natural gas by another set of reactions. The latter set is regularly used in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petrochemical] plants and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil refineries]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Wells are drilled into oil reservoirs to extract the crude oil. "Natural lift" production methods that rely on the natural reservoir pressure to force the oil to the surface are usually sufficient for a while after reservoirs are first tapped. In some reservoirs, such as in the Middle East, the natural pressure is sufficient over a long time. The natural pressure in many reservoirs, however, eventually dissipates. Then the oil must be pumped out using “artificial lift” created by mechanical pumps powered by gas or electricity. Over time, these "primary" methods become less effective and "secondary" production methods may be used. A common secondary method is “waterflood” or injection of water into the reservoir to increase pressure and force the oil to the drilled shaft or "wellbore." Eventually "tertiary" or "enhanced" oil recovery methods may be used to increase the oil's flow characteristics by injecting steam, carbon dioxide and other gases or chemicals into the reservoir. In the United States, primary production methods account for less than 40% of the oil produced on a daily basis, secondary methods account for about half, and tertiary recovery the remaining 10%. Extracting oil (or “bitumen”) from oil/tar sand and oil shale deposits requires mining the sand or shale and heating it in a vessel or retort, or using “in-situ” methods of injecting heated liquids into the deposit and then pumping out the oil-saturated liquid. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Unconventional oil reservoirs ** === //See also: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Unconventional oil], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil sands] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil shale reserves] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Oil-eating bacteria <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biodegrade] oil that has escaped to the surface. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil sands] are reservoirs of partially biodegraded oil still in the process of escaping and being biodegraded, but they contain so much migrating oil that, although most of it has escaped, vast amounts are still present—more than can be found in conventional oil reservoirs. The lighter fractions of the crude oil are destroyed first, resulting in reservoirs containing an extremely heavy form of crude oil, called crude bitumen in Canada, or extra-heavy crude oil in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Venezuela]. These two countries have the world's largest deposits of oil sands. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">On the other hand, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil shales] are source rocks that have not been exposed to heat or pressure long enough to convert their trapped hydrocarbons into crude oil. Technically speaking, oil shales are not really shales and do not really contain oil, but are usually relatively hard rocks called <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|marls] containing a waxy substance called <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kerogen]. The kerogen trapped in the rock can be converted into crude oil using heat and pressure to simulate natural processes. The method has been known for centuries and was patented in 1694 under British Crown Patent No. 330 covering, "A way to extract and make great quantityes of pitch, tarr, and oyle out of a sort of stone." Although oil shales are found in many countries, the United States has the world's largest deposits. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[29]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Classification  == //See also: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Benchmark (crude oil)] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> A sample of medium heavy crude oil <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petroleum industry] generally classifies crude oil by the geographic location it is produced in (e.g. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|West Texas Intermediate], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Brent] , or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oman] ), its <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|API gravity] (an oil industry measure of density), and its sulfur content. Crude oil may be considered //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|light] // if it has low density or //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heavy] // if it has high density; and it may be referred to as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sweet] if it contains relatively little sulfur or //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sour] // if it contains substantial amounts of sulfur. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The geographic location is important because it affects transportation costs to the refinery. //Light//crude oil is more desirable than //heavy// oil since it produces a higher yield of petrol, while //sweet// oil commands a higher price than //sour// oil because it has fewer environmental problems and requires less refining to meet sulfur standards imposed on fuels in consuming countries. Each crude oil has unique molecular characteristics which are understood by the use of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|crude oil assay analysis] in petroleum laboratories. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Barrels] from an area in which the crude oil's molecular characteristics have been determined and the oil has been classified are used as pricing <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|references] throughout the world. Some of the common reference crudes are: <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">There are declining amounts of these benchmark oils being produced each year, so other oils are more commonly what is actually delivered. While the reference price may be for West Texas Intermediate delivered at Cushing, the actual oil being traded may be a discounted Canadian heavy oil delivered at <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hardisty, Alberta], and for a Brent Blend delivered at Shetland, it may be a Russian Export Blend delivered at the port of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Primorsk]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[31]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Petroleum industry  == <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|New York Mercantile Exchange] prices for West Texas Intermediate 1996–2009   //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum industry] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The petroleum industry is involved in the global processes of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|exploration], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|extraction] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|refining] ,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|transporting] (often with <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil tankers] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pipelines] ), and marketing petroleum products. The largest volume products of the industry are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fuel oil] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petrol]. Petroleum is also the raw material for many<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|chemical products], including pharmaceuticals, solvents, fertilizers, pesticides, and plastics. The industry is usually divided into three major components: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|upstream], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|midstream] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|downstream]. Midstream operations are usually included in the downstream category. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Petroleum is vital to many <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|industries], and is of importance to the maintenance of industrialized<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|civilization] itself, and thus is critical concern to many nations. Oil accounts for a large percentage of the world's energy consumption, ranging from a low of 32% for <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Europe] and Asia, up to a high of 53% for the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Middle East]. Other geographic regions' consumption patterns are as follows: South and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Central America] (44%), <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Africa] (41%), and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|North America] (40%). The world at large consumes 30 billion <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|barrels] (4.8 km³) of oil per year, and the top oil consumers largely consist of developed nations. In fact, 24% of the oil consumed in 2004 went to the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States] alone, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[32]] though by 2007 this had dropped to 21% of world oil consumed. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[33]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In the US, in the states of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Arizona], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|California] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hawaii] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nevada] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oregon] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Washington] , the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Western States Petroleum Association] (WSPA) represents companies responsible for producing, distributing, refining, transporting and marketing petroleum. This non-profit trade association was founded in 1907, and is the oldest petroleum trade association in the United States. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[34]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> History  == //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|History of petroleum] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Oil derrick in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Okemah, Oklahoma], 1922. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Petroleum, in one form or another, has been used since ancient times, and is now important across society, including in economy, politics and technology. The rise in importance was mostly due to the invention of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|internal combustion engine], the rise in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|commercial aviation] and the increasing use of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|plastic]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">More than 4000 years ago, according to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Herodotus] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Diodorus Siculus], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|asphalt] was used in the construction of the walls and towers of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Babylon] ; there were oil pits near <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Ardericca] (near Babylon), and a pitch spring on <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Zacynthus]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[35]] Great quantities of it were found on the banks of the river<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Issus], one of the tributaries of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Euphrates]. Ancient <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Persian] tablets indicate the medicinal and lighting uses of petroleum in the upper levels of their society. By 347 CE, oil was produced from bamboo-drilled wells in China. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[36]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In the 1850s, the process to distill <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|kerosene] from petroleum was invented by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ignacy Łukasiewicz], providing a cheaper alternative to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|whale oil]. The demand for the petroleum as a fuel for lighting in North America and around the world quickly grew. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[37]] The world's first commercial oil well was drilled in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Poland] in 1853. Oil exploration developed in many parts of the world with the Russian Empire, particularly the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Branobel] company in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Azerbaijan] (Asia's first modern borehole oil production began in 1848 at the Bibi-Heybat field near Baku), taking the lead in production by the end of the 19th century. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[38]]  Oil exploration in North America during the early 20th century later led to the U.S. becoming the leading producer by the mid 1900s. As petroleum production in the U.S. peaked during the 1960s, however, the United States was surpassed by Saudi Arabia and Russia. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Today, about 90% of vehicular fuel needs are met by oil. Petroleum also makes up 40% of total energy consumption in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States], but is responsible for only 2% of electricity generation. Petroleum's worth as a portable, dense energy source powering the vast majority of vehicles and as the base of many industrial chemicals makes it one of the world's most important <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|commodities]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The top three oil producing countries are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Saudi Arabia], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Russia] , and the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[39]] About 80% of the world's readily accessible reserves are located in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Middle East], with 62.5% coming from the Arab 5: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Saudi Arabia] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|UAE] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Iraq] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Qatar] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kuwait]. A large portion of the world's total oil exists as unconventional sources, such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|bitumen] in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Venezuela] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil shale]. While significant volumes of oil are extracted from oil sands, particularly in Canada, logistical and technical hurdles remain, as oil extraction requires large amounts of heat and water, making its net energy content quite low relative to conventional crude oil. Thus, Canada's oil sands are not expected to provide more than a few million barrels per day in the foreseeable future. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Price  == //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Price of petroleum] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">After the collapse of the OPEC-administered pricing system in 1985, and a short lived experiment with netback pricing, oil-exporting countries adopted a market-linked pricing mechanism. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[40]] First adopted by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PEMEX] in 1986, market-linked pricing was widely accepted, and by 1988 became and still is the main method for pricing crude oil in international trade. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[40]] The current reference, or pricing markers, are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Brent], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WTI] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Dubai/Oman]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[40]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Uses  == //Further information: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum products] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The chemical structure of petroleum is <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|heterogeneous], composed of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrocarbon] chains of different lengths. Because of this, petroleum may be taken to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil refineries] and the hydrocarbon chemicals separated by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|distillation] and treated by other <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|chemical processes], to be used for a variety of purposes. See <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum products]. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Fuels ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The most common <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|distillations] of petroleum are <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fuels]. Fuels include (by increasing molecular masses): ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Other derivatives ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Certain types of resultant hydrocarbons may be mixed with other non-hydrocarbons, to create other end products: ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Agriculture ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Since the 1940s, agricultural productivity has increased dramatically, due largely to the increased use of energy-intensive <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|mechanization] ,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fertilizers] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pesticides]. Nearly all pesticides and many fertilizers are made from oil. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[41]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Petroleum by country  == ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Consumption statistics ** === <span style="display: block; margin-bottom: 25px; margin-left: auto; margin-right: auto; margin-top: 25px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> > <span style="display: block; font-size: 12px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 2px; padding-left: 4px; padding-right: 4px; padding-top: 2px; word-wrap: break-word;"><span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Global fossil carbon emissions, an indicator of consumption, for 1800–2007. Total is black, Oil is in blue. >  <span style="display: block; margin-bottom: 15px; margin-left: auto; margin-right: auto; margin-top: 15px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> > <span style="display: block; font-size: 12px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 2px; padding-left: 4px; padding-right: 4px; padding-top: 2px; word-wrap: break-word;"><span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">World energy consumption, 1980–2030. //Source: International Energy Outlook 2006.// >  <span style="display: block; margin-bottom: 25px; margin-left: auto; margin-right: auto; margin-top: 25px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> > <span style="display: block; font-size: 12px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 2px; padding-left: 4px; padding-right: 4px; padding-top: 2px; word-wrap: break-word;"><span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">daily oil consumption from 1980 to 2006 >  <span style="display: block; margin-bottom: 25px; margin-left: auto; margin-right: auto; margin-top: 25px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> > <span style="display: block; font-size: 12px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 2px; padding-left: 4px; padding-right: 4px; padding-top: 2px; word-wrap: break-word;"><span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">oil consumption by percentage of total per region from 1980 to 2006: **red** =USA, **blue** =Europe, **yellow** =Asia+Oceania >  ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">**  Consumption ** === <span style="background-color: transparent; display: block; margin-bottom: 0.5em; margin-left: auto; margin-right: auto; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; margin-left: auto; margin-right: auto; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 552px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-left: auto; margin-right: auto; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; margin-left: auto; margin-right: auto; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right; margin-left: auto; margin-right: auto;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; margin-left: auto; margin-right: auto; text-decoration: none;"> Oil consumption per capita (darker colors represent more consumption). <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">This table orders the amount of petroleum consumed in 2008 in thousand <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|barrels] (bbl) per day and in thousand <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|cubic metres] (m 3 ) per day: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[42]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[43]]  <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[44]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Source: <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|US Energy Information Administration] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Population Data: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[45]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"> 1 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|peak production of oil] already passed in this state <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"> 2 This country is not a major oil producer ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Production ** === //For oil reserves by country, see <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil reserves#Proven reserves in order] .// <span style="background-color: transparent; display: block; margin-bottom: 0.5em; margin-left: auto; margin-right: auto; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; margin-left: auto; margin-right: auto; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 552px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-left: auto; margin-right: auto; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; margin-left: auto; margin-right: auto; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right; margin-left: auto; margin-right: auto;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; margin-left: auto; margin-right: auto; text-decoration: none;"> Oil producing <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-left: auto; margin-right: auto; text-decoration: none;">[|countries] <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 252px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Graph of Top Oil Producing Countries 1960–2006, including Soviet Union <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[46]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In petroleum industry parlance, //production// refers to the quantity of crude extracted from reserves, not the literal creation of the product. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Source: <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|U.S. Energy Information Administration] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">  1 Peak production of conventional oil already passed in this state  <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">  2 Although Canadian conventional oil production is declining, total oil production is increasing as oil sands production grows. If oil sands are included, it has the world's second largest oil reserves after Saudi Arabia. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">  3 Though still a member, Iraq has not been included in production figures since 1998 ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Export ** === //See also: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Fossil fuel exporters] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Organization of Petroleum Exporting Countries] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 552px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Oil exports by country. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In order of net exports in 2006 in thousand <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|bbl] /<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|d] and thousand <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|m³] /d: <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Source: <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|US Energy Information Administration] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">  1 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|peak production] already passed in this state <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"> 2 Canadian statistics are complicated by the fact it is both an importer and exporter of crude oil, and refines large amounts of oil for the U.S. market. It is the leading source of U.S. imports of oil and products, averaging 2,500,000 bbl/d (397,000 m 3 /d) in August 2007. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|[2]] . <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Total world production/consumption (as of 2005) is approximately 84 million barrels per day (13,400,000 m 3 /d). ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">**  Import ** === <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 552px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Oil imports by country. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In order of net imports in 2006 in thousand <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|bbl] /<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|d] and thousand <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|m³] /d: <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Source: <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|US Energy Information Administration]  <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">  1 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|peak production of oil] already passed in this state <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"> 2 Major oil producer whose production is still increasing ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Non-producing consumers ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Countries whose oil production is 10% or less of their consumption. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Source: <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/en/0/00/Lock_icon_blue.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 16px; text-decoration: none;">[|CIA World Factbook] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Environmental effects  == <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Diesel fuel spill on a road   //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Environmental issues with petroleum] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Because petroleum is a naturally occurring substance, its presence in the environment need not be the result of human causes such as accidents and routine activities ( <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|seismic] exploration,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|drilling], extraction, refining and combustion). Phenomena such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|seeps] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[47]] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|tar pits] are examples of areas that petroleum naturally affects. Regardless of source, petroleum's effects when released into the environment are similar. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Global Warming ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">When burnt, petroleum releases carbon dioxide; a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|greenhouse gas]. Along with the burning of coal, petroleum combustion is the largest contributor to the increase in atmospheric CO 2. Atmospheric CO 2 has risen steadily since the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|industrial revolution] to current levels of over <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|380ppmv from the 180 - 300ppmv] of the prior 800 thousand years, driving <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|global warming]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[48]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[49]]  <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[50]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Extraction ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Oil extraction is simply the removal of oil from the reservoir (oil pool). Oil is often recovered as a water-in-oil emulsion, and specialty chemicals called <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|demulsifiers] are used to separate the oil from water. Oil extraction is costly and sometimes environmentally damaging, although <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Dr. John Hunt] of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Woods Hole Oceanographic Institution] pointed out in a 1981 paper that over 70% of the reserves in the world are associated with visible <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|macroseepages], and many oil fields are found due to natural <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|seeps]. Offshore exploration and extraction of oil disturbs the surrounding marine environment. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[51]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Oil spills ** === //Main article: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil spill] // <span style="background-color: transparent; clear: right; display: block; float: right; margin-bottom: 1.3em; margin-left: 1.4em; margin-right: 0px; margin-top: 0.5em; width: auto;"><span style="background-color: #f9f9f9; border-bottom-color: #cccccc; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #cccccc; border-left-style: solid; border-left-width: 1px; border-right-color: #cccccc; border-right-style: solid; border-right-width: 1px; border-top-color: #cccccc; border-top-style: solid; border-top-width: 1px; display: block; font-size: 12px; min-width: 100px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: center; width: 222px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;"> <span style="border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; display: block; font-size: 11px; line-height: 1.4em; padding-bottom: 3px !important; padding-left: 3px !important; padding-right: 3px !important; padding-top: 3px !important; text-align: left;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; display: block; float: right;"><span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; border-bottom-style: none !important; border-color: initial !important; border-left-style: none !important; border-right-style: none !important; border-top-style: none !important; border-width: initial !important; color: #0645ad; display: block; text-decoration: none;"> Volunteers cleaning up the aftermath of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Prestige oil spill] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Crude oil and refined fuel <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|spills] from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|tanker ship] accidents have damaged natural <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ecosystems] in<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Alaska], the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Gulf of Mexico] , the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Galapagos Islands] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|France] and many <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|other places]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The quantity of oil spilled during accidents has ranged from a few hundred tons to several hundred thousand tons (e.g., <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Deepwater Horizon Oil Spill], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Atlantic Empress] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Amoco Cadiz] ). Smaller spills have already proven to have a great impact on ecosystems, such as the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Exxon Valdez oil spill] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Oil spills at sea are generally much more damaging than those on land, since they can spread for hundreds of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|nautical miles] in a thin <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil slick] which can cover <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|beaches] with a thin coating of oil. This can kill sea birds, mammals, shellfish and other organisms it coats. Oil spills on land are more readily containable if a makeshift earth <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|dam] can be rapidly <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|bulldozed] around the spill site before most of the oil escapes, and land animals can avoid the oil more easily. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Control of oil spills is difficult, requires ad hoc methods, and often a large amount of manpower. The dropping of bombs and incendiary devices from aircraft on the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Torrey Canyon] wreck produced poor results; <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[52]] modern techniques would include pumping the oil from the wreck, like in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Prestige oil spill] or the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Erika] oil spill. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[53]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Though crude oil is predominantly composed of various hydrocarbons, certain nitrogen heterocylic compounds, such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pyridine], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|picoline] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|quinoline] are reported as contaminants associated with crude oil, as well as facilities processing oil shale or coal, and have also been found at legacy wood treatment sites. These compounds have a very high water solubility, and thus tend to dissolve and move with water. Certain naturally occurring bacteria, such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Micrococcus], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Arthrobacter] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Rhodococcus] and have been shown to degrade these contaminants. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[54]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Tarballs ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">A tarball is a blob of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil] (not to be confused with <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|tar], which is typically derived from pine trees rather than petroleum) which has been weathered after floating in the ocean. Tarballs are an aquatic <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|pollutant] in most environments, although they can occur naturally, for example, in the Santa Barbara Channel of California. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[55]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[56]]  Their concentration and features have been used to assess the extent of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil spills]. Their composition can be used to identify their sources of origin, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[57]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[58]]  and tarballs themselves may be dispersed over long distances by deep sea currents. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[56]] They are slowly decomposed by bacteria, including //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Chromobacterium violaceum] //, //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Cladosporium resinae] //, //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Bacillus submarinus] //,//<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Micrococcus varians] //, //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pseudomonas aeruginosa] //, //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Candida marina] // and //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Saccharomyces estuari] //. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[55]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Whales ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">James S. Robbins has argued that the advent of petroleum-refined kerosene saved some species of great whales from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|extinction] by providing an inexpensive substitute for whale oil, thus eliminating the economic imperative for open-boat <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|whaling]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[59]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Alternatives to petroleum  == //Further information: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In the United States in 2007 about 70% of petroleum was used for transportation (e.g. petrol, diesel, jet fuel), 24% by industry (e.g. production of plastics), 5% for residential and commercial uses, and 2% for electricity production. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[60]] Outside of the US, a higher proportion of petroleum tends to be used for electricity. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[61]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Alternatives to petroleum-based vehicle fuels ** === //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Alternative propulsion], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Biofuel] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hydrogen economy] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Alternative propulsion refers to both: <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Currently, cars can be classified into the following groups: ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Alternatives to using oil in industry ** === <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Biological feedstocks do exist for industrial uses such as plastic production. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[63]] ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Alternatives to burning petroleum for electricity ** === //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Alternative energy], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nuclear power] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">In oil producing countries with little refinery capacity, oil is sometimes burned to produce electricity. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy] technologies such as<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar power], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|wind power] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|micro hydro] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biomass] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biofuels] might someday be used to replace some of these generators, but today the primary alternatives remain large scale <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydroelectricity] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|nuclear] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|coal] -fired generation. ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Future of petroleum production  == <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Consumption in the twentieth century has been abundantly pushed by automobile growth; the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|1985-2003 oil glut] even fuelled the sales of low economy vehicles in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OECD] countries. In 2008, the economic crisis seems to have some impact on the sales of such vehicles; still, the 2008 oil consumption shows a small increase. The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BRIC] countries might also kick in, as China briefly was the first automobile market in December 2009. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[64]] The immediate outlook still hints upwards. In the long term, uncertainties linger; the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC] believes that the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OECD] countries will push low consumption policies at some point in the future; when that happens, it will definitely curb the oil sales, and both<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|EIA] kept lowering their 2020 consumption estimates during the past 5 years. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[65]] Oil products are more and more in competition with alternative sources, mainly coal and natural gas, both cheaper sources. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Production will also face an increasingly complex situation; while OPEC countries still have large reserves at low production prices, newly found reservoirs often lead to higher prices; offshore giants such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Tupi], Guara and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Tiber] demand high investments and ever-increasing technological abilities. Subsalt reservoirs such as Tupi were unknown in the twentieth century, mainly because the industry was unable to probe them. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Enhanced Oil Recovery] (EOR) techniques (example: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|DaQing], China <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[66]] ) will continue to play a major role in increasing the world's recoverable oil. ===<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: initial; border-bottom-style: none; border-bottom-width: initial; color: black; font-size: 17px; margin-bottom: 0.3em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;">** Hubbert peak theory ** === //Main articles: <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Peak oil] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hubbert peak theory] // <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The Hubbert peak theory (also known as peak oil) posits that future petroleum production (whether for individual oil wells, entire oil fields, whole countries, or worldwide production) will eventually peak and then decline at a similar rate to the rate of increase before the peak as these reserves are exhausted. The peak of oil discoveries was in 1965, and oil production per year has surpassed oil discoveries every year since 1980. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[67]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">Hubbert applied his theory to predict the peak of U.S. oil production at a date between 1966 and 1970. This prediction was based on data available at the time of his publication in 1956. In the same paper, Hubbert predicts world peak oil in "half a century" after his publication, which would be 2006. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[68]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">It is difficult to predict the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oil peak] in any given region, due to the lack of knowledge and/or transparency in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|accounting] of global oil reserves. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[69]] The scientist and researchers from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oxford University] argue that official figures are inflated because OPEC members over-reported reserves in the 1980s when competing for global market share. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[70]] Based on available production data, proponents have previously predicted the peak for the world to be in years 1989, 1995, or 1995-2000. Some of these predictions date from before the recession of the early 1980s, and the consequent reduction in global consumption, the effect of which was to delay the date of any peak by several years. Just as the 1971 U.S. peak in oil production was only clearly recognized after the fact, a peak in world production will be difficult to discern until production clearly drops off. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|International Energy Agency] (IEA) says production of conventional crude oil peaked in 2006. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[71]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[72]]  Since virtually all economic sectors rely heavily on petroleum, peak oil could lead to a "partial or complete failure of markets." <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[73]] ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> See also  == <span style="border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #aaaaaa; border-left-style: solid; border-left-width: 1px; border-right-color: #aaaaaa; border-right-style: solid; border-right-width: 1px; border-top-color: #aaaaaa; border-top-style: solid; border-top-width: 1px; clear: right; display: block; float: right; margin-bottom: 0.5em; margin-left: 0.5em; margin-right: 0px; margin-top: 0.5em;"> ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> Notes  == ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> References  == ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> External links  ==
 * = [[image:http://upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/40px-Edit-clear.svg.png width="40" height="40"]] || This article's <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|introduction section] **may not adequately <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|summarize] its contents**. To comply with Wikipedia's <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|lead section guidelines], please consider expanding the lead to <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|provide an accessible overview] of the article's key points. //(June 2010)// ||
 * ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; border-width: initial; color: black; display: inline; font-size: 12px; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; width: auto;">**Contents** ==
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|2 Chemistry]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3 Empirical equations for the thermal properties of petroleum products]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3.1 Heat of combustion]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3.2 Thermal conductivity]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3.3 Specific heat]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|3.4 Latent heat of vaporization]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|4 Formation]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|4.1 Abiogenic origin]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|5 Crude oil]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|5.1 Crude oil reservoirs]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|5.2 Unconventional oil reservoirs]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|6 Classification]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|7 Petroleum industry]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|8 History]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|9 Price]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|10 Uses]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|10.1 Fuels]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|10.2 Other derivatives]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|10.3 Agriculture]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|11 Petroleum by country]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|11.1 Consumption statistics]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|11.2 Consumption]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|11.3 Production]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|11.4 Export]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|11.5 Import]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|11.6 Non-producing consumers]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|12 Environmental effects]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|12.1 Global Warming]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|12.2 Extraction]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|12.3 Oil spills]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|12.4 Tarballs]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|12.5 Whales]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|13 Alternatives to petroleum]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|13.1 Alternatives to petroleum-based vehicle fuels]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|13.2 Alternatives to using oil in industry]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|13.3 Alternatives to burning petroleum for electricity]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|14 Future of petroleum production]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2em; margin-right: 0px; margin-top: 0px; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|14.1 Hubbert peak theory]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|15 See also]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|16 Notes]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|17 References]
 * <span style="line-height: 1.5em; list-style-image: none; list-style-type: none; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-align: left;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|18 External links] ||
 * Composition by weight**||~ Element ||~ Percent range ||
 * Carbon || 83 to 87% ||
 * Hydrogen || 10 to 14% ||
 * Nitrogen || 0.1 to 2% ||
 * Oxygen || 0.1 to 1.5% ||
 * Sulfur || 0.5 to .6% ||
 * Metals || < 0.1% ||
 * Composition by weight**||~ Hydrocarbon ||~ Average ||~ Range ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Paraffins] || 30% || 15 to 60% ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Naphthenes] || 49% || 30 to 60% ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Aromatics] || 15% || 3 to 30% ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Asphaltics] || 6% || remainder ||
 * = [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/Unbalanced_scales.svg/45px-Unbalanced_scales.svg.png width="45" height="40" caption="Unbalanced scales.svg"]] || An editor has expressed a concern that this section **lends <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[|undue weight] to certain ideas relative to the section as a whole**. Please help to discuss and resolve the dispute before removing this message. //(January 2011)// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|West Texas Intermediate] (WTI), a very high-quality, sweet, light oil delivered at <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Cushing, Oklahoma] for North American oil
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Brent Blend], comprising 15 oils from fields in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Brent] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ninian] systems in the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|East Shetland Basin] of the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|North Sea] . The oil is landed at <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sullom Voe] terminal in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Shetland] . Oil production from Europe, Africa and Middle Eastern oil flowing West tends to be priced off this oil, which forms a <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|benchmark]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Dubai-Oman], used as benchmark for Middle East sour crude oil flowing to the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Asia] -<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Pacific] region
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Tapis] (from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Malaysia], used as a reference for light Far East oil)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">Minas (from <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Indonesia], used as a reference for heavy Far East oil)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">The <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC Reference Basket], a weighted average of oil blends from various <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC] (The Organization of the Petroleum Exporting Countries) countries
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Midway Sunset] Heavy, by which heavy oil in California is priced <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[30]]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Liquefied petroleum gas] (LPG)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ethane] and other short-chain <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|alkanes]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Gasoline] (Petrol)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Diesel fuel] (petrodiesel)
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kerosene]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Jet fuel]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Fuel oils]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Alkenes] (olefins) which can be manufactured into <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|plastics] or other compounds
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Lubricants] (produces light machine oils, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|motor oils], and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|greases] , adding <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|viscosity] stabilizers as required).
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Wax], used in the packaging of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|frozen foods] , among others.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sulfur] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sulfuric acid] . These are a useful industrial materials. Sulfuric acid is usually prepared as the acid precursor <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|oleum], a byproduct of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|sulfur removal] from fuels.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">Bulk <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|tar].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Asphalt]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum coke], used in speciality carbon products or as solid fuel.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Paraffin wax]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Aromatic] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|petrochemicals] to be used as precursors in other <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|chemical] production.
 * <span style="background-color: #f9f9f9; background-color: white; border-bottom-color: white; border-bottom-style: solid; border-bottom-width: 2px; border-left-color: white; border-left-style: solid; border-left-width: 2px; border-right-color: white; border-right-style: solid; border-right-width: 2px; border-top-color: white; border-top-style: solid; border-top-width: 2px; display: block; display: inline-block; line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2px; margin-right: 2px; margin-top: 2px; padding-bottom: 2px; padding-left: 2px; padding-right: 2px; padding-top: 2px; vertical-align: top; width: 195px; zoom: 1; zoom: 1;">
 * <span style="background-color: #f9f9f9; background-color: white; border-bottom-color: white; border-bottom-style: solid; border-bottom-width: 2px; border-left-color: white; border-left-style: solid; border-left-width: 2px; border-right-color: white; border-right-style: solid; border-right-width: 2px; border-top-color: white; border-top-style: solid; border-top-width: 2px; display: block; display: inline-block; line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2px; margin-right: 2px; margin-top: 2px; padding-bottom: 2px; padding-left: 2px; padding-right: 2px; padding-top: 2px; vertical-align: top; width: 195px; zoom: 1; zoom: 1;">
 * <span style="background-color: #f9f9f9; background-color: white; border-bottom-color: white; border-bottom-style: solid; border-bottom-width: 2px; border-left-color: white; border-left-style: solid; border-left-width: 2px; border-right-color: white; border-right-style: solid; border-right-width: 2px; border-top-color: white; border-top-style: solid; border-top-width: 2px; display: block; display: inline-block; line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2px; margin-right: 2px; margin-top: 2px; padding-bottom: 2px; padding-left: 2px; padding-right: 2px; padding-top: 2px; vertical-align: top; width: 195px; zoom: 1; zoom: 1;">
 * <span style="background-color: #f9f9f9; background-color: white; border-bottom-color: white; border-bottom-style: solid; border-bottom-width: 2px; border-left-color: white; border-left-style: solid; border-left-width: 2px; border-right-color: white; border-right-style: solid; border-right-width: 2px; border-top-color: white; border-top-style: solid; border-top-width: 2px; display: block; display: inline-block; line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 2px; margin-right: 2px; margin-top: 2px; padding-bottom: 2px; padding-left: 2px; padding-right: 2px; padding-top: 2px; vertical-align: top; width: 195px; zoom: 1; zoom: 1;">
 * ~ Consuming Nation 2008<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ (1000 bbl/day)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ (1000 m 3 /day)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ population in millions<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ bbl/year per capita<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States] 1 ** || 19,497.95 || 3,099.9 || 314 || 22.6 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|China] ** || 7,831.00 || 1,245.0 || 1345 || 2.1 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Japan] 2 ** || 4,784.85 || 760.7 || 127 || 13.7 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|India] 2 ** || 2,962.00 || 470.9 || 1198 || 0.9 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Russia] 1 ** || 2,916.00 || 463.6 || 140 || 7.6 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Germany] 2 ** || 2,569.28 || 408.5 || 82 || 11.4 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Brazil] ** || 2,485.00 || 395.1 || 193 || 4.7 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Saudi Arabia] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC] )** || 2,376.00 || 377.8 || 25 || 33.7 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada] ** || 2,261.36 || 359.5 || 33 || 24.6 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|South Korea] 2 ** || 2,174.91 || 345.8 || 48 || 16.4 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Mexico] 1 ** || 2,128.46 || 338.4 || 109 || 7.1 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|France] 2 ** || 1,986.26 || 315.8 || 62 || 11.6 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Iran] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC] )** || 1,741.00 || 276.8 || 74 || 8.6 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United Kingdom] 1 ** || 1,709.66 || 271.8 || 61 || 10.1 ||
 * < **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Italy] 2 ** || 1,639.01 || 260.6 || 60 || 10 ||
 * ~ #<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ Producing Nation<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ 10 3 bbl/d (2006)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ 10 3 bbl/d (2007)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ 10 3 bbl/d (2008)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ 10 3 bbl/d (2009)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ Present Share<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||
 * 1 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Saudi Arabia] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC] )** || 10,665 || 10,234 || 10,782 || 9,760 || 11.8% ||
 * 2 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Russia] 1 ** || 9,677 || 9,876 || 9,789 || 9,934 || 12.0% ||
 * 3 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States] 1 ** || 8,331 || 8,481 || 8,514 || 9,141 || 11.1% ||
 * 4 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Iran] (OPEC)** || 4,148 || 4,043 || 4,174 || 4,177 || 5.1% ||
 * 5 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|China] ** || 3,845 || 3,901 || 3,973 || 3,996 || 4.8% ||
 * 6 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada] 2 ** || 3,288 || 3,358 || 3,350 || 3,294 || 4.0% ||
 * 7 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Mexico] 1 ** || 3,707 || 3,501 || 3,185 || 3,001 || 3.6% ||
 * 8 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United Arab Emirates] (OPEC)** || 2,945 || 2,948 || 3,046 || 2,795 || 3.4% ||
 * 9 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kuwait] (OPEC)** || 2,675 || 2,613 || 2,742 || 2,496 || 3.0% ||
 * 10 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Venezuela] (OPEC) 1 ** || 2,803 || 2,667 || 2,643 || 2,471 || 3.0% ||
 * 11 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Norway] 1 ** || 2,786 || 2,565 || 2,466 || 2,350 || 2.8% ||
 * 12 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Brazil] ** || 2,166 || 2,279 || 2,401 || 2,577 || 3.1% ||
 * 13 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Iraq] (OPEC) 3 ** || 2,008 || 2,094 || 2,385 || 2,400 || 2.9% ||
 * 14 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Algeria] (OPEC)** || 2,122 || 2,173 || 2,179 || 2,126 || 2.6% ||
 * 15 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nigeria] (OPEC)** || 2,443 || 2,352 || 2,169 || 2,211 || 2.7% ||
 * 16 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Angola] (OPEC)** || 1,435 || 1,769 || 2,014 || 1,948 || 2.4% ||
 * 17 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Libya] (OPEC)** || 1,809 || 1,845 || 1,875 || 1,789 || 2.2% ||
 * 18 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United Kingdom] ** || 1,689 || 1,690 || 1,584 || 1,422 || 1.7% ||
 * 19 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kazakhstan] ** || 1,388 || 1,445 || 1,429 || 1,540 || 1.9% ||
 * 20 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Qatar] (OPEC)** || 1,141 || 1,136 || 1,207 || 1,213 || 1.5% ||
 * 21 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Indonesia] ** || 1,102 || 1,044 || 1,051 || 1,023 || 1.2% ||
 * 22 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|India] ** || 854 || 881 || 884 || 877 || 1.1% ||
 * 23 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Azerbaijan] ** || 648 || 850 || 875 || 1,012 || 1.2% ||
 * 24 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Argentina] ** || 802 || 791 || 792 || 794 || 1.0% ||
 * 25 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oman] ** || 743 || 714 || 761 || 816 || 1.0% ||
 * 26 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Malaysia] ** || 729 || 703 || 727 || 693 || 0.8% ||
 * 27 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Egypt] ** || 667 || 664 || 631 || 678 || 0.8% ||
 * 28 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Colombia] ** || 544 || 543 || 601 || 686 || 0.8% ||
 * 29 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Australia] ** || 552 || 595 || 586 || 588 || 0.7% ||
 * 30 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Ecuador] (OPEC)** || 536 || 512 || 505 || 485 || 0.6% ||
 * 31 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Sudan] ** || 380 || 466 || 480 || 486 || 0.6% ||
 * 32 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Syria] ** || 449 || 446 || 426 || 400 || 0.5% ||
 * 33 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Equatorial Guinea] ** || 386 || 400 || 359 || 346 || 0.4% ||
 * 34 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thailand] ** || 334 || 349 || 361 || 339 || 0.4% ||
 * 35 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Vietnam] ** || 362 || 352 || 314 || 346 || 0.4% ||
 * 36 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Yemen] ** || 377 || 361 || 300 || 287 || 0.3% ||
 * 37 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Denmark] ** || 344 || 314 || 289 || 262 || 0.3% ||
 * 38 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Gabon] ** || 237 || 244 || 248 || 242 || 0.3% ||
 * 39 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|South Africa] ** || 204 || 199 || 195 || 192 || 0.2% ||
 * 40 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Turkmenistan] ** || No data || 180 || 189 || 198 || 0.2% ||
 * ~ #<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ Exporting Nation (2006)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ (10 3 bbl/d)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ (10 3 m 3 /d)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||
 * 1 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Saudi Arabia] (<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OPEC] )** || 8,651 || 1,376 ||
 * 2 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Russia] 1 ** || 6,565 || 1,044 ||
 * 3 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Norway] 1 ** || 2,542 || 404 ||
 * 4 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Iran] (OPEC)** || 2,519 || 401 ||
 * 5 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United Arab Emirates] (OPEC)** || 2,515 || 400 ||
 * 6 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Venezuela] (OPEC) 1 ** || 2,203 || 350 ||
 * 7 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kuwait] (OPEC)** || 2,150 || 342 ||
 * 8 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Nigeria] (OPEC)** || 2,146 || 341 ||
 * 9 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Algeria] (OPEC) 1 ** || 1,847 || 297 ||
 * 10 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Mexico] 1 ** || 1,676 || 266 ||
 * 11 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Libya] (OPEC) 1 ** || 1,525 || 242 ||
 * 12 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Iraq] (OPEC)** || 1,438 || 229 ||
 * 13 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Angola] (OPEC)** || 1,363 || 217 ||
 * 14 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Kazakhstan] ** || 1,114 || 177 ||
 * 15 ||< **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada] 2 ** || 1,071 || 170 ||
 * ~ #<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ Importing Nation (2006)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ (10 3 bbl/day)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ (10 3 m 3 /day)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||
 * 1 ||< **United States 1 ** || 12,220 || 1,943 ||
 * 2 ||< **Japan** || 5,097 || 810 ||
 * 3 ||< **China 2 ** || 3,438 || 547 ||
 * 4 ||< **Germany** || 2,483 || 395 ||
 * 5 ||< **South Korea** || 2,150 || 342 ||
 * 6 ||< **France** || 1,893 || 301 ||
 * 7 ||< **India** || 1,687 || 268 ||
 * 8 ||< **Italy** || 1,558 || 248 ||
 * 9 ||< **Spain** || 1,555 || 247 ||
 * 10 ||< **Republic of China (Taiwan)** || 942 || 150 ||
 * 11 ||< **Netherlands** || 936 || 149 ||
 * 12 ||< **Singapore** || 787 || 125 ||
 * 13 ||< **Thailand** || 606 || 96 ||
 * 14 ||< **Turkey** || 576 || 92 ||
 * 15 ||< **Belgium** || 546 || 87 ||
 * ~ #<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ Consuming Nation<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ (bbl/day)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||~ (m³/day)<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; margin-bottom: 0px; margin-left: 0.3em; margin-right: 0.3em; margin-top: 0px; text-decoration: none;">[[image:http://bits.wikimedia.org/skins-1.17/common/images/sort_none.gif caption="↓" link="http://en.wikipedia.org/wiki/Petroleum#"]] ||
 * 1 ||< **Japan** || 5,578,000 || 886,831 ||
 * 2 ||< **Germany** || 2,677,000 || 425,609 ||
 * 3 ||< **South Korea** || 2,061,000 || 327,673 ||
 * 4 ||< **France** || 2,060,000 || 327,514 ||
 * 5 ||< **Italy** || 1,874,000 || 297,942 ||
 * 6 ||< **Spain** || 1,537,000 || 244,363 ||
 * 7 ||< **Netherlands** || 946,700 || 150,513 ||
 * 8 ||< **Turkey** || 575,011 || 91,663 ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Alternative fuels] used in standard or modified <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|internal combustion engines] (i.e. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biofuels] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|combustion hydrogen] ).
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">propulsion systems not based on internal combustion, such as those based on <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|electricity] (for example, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|all-electric] or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hybrid vehicles] ),<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|compressed air], or <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|fuel cells] (i.e. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrogen fuel cells] ).
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Internal combustion engine] cars, which may use
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">petrol, fuel and/or biofuels (e.g. alcohol, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biodiesel] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biobutanol] )
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|compressed natural gas] used by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|natural gas vehicles]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrogen] in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydrogen vehicles].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">Advanced technology cars such as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hybrid vehicles] which use petroleum and/or biofuels, albeit far more efficiently. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[62]]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Plug-in hybrids], that can store and use externally produced electricity in addition to petroleum.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|electric cars]
 * = <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/1/1c/Wiki_letter_w_cropped.svg/20px-Wiki_letter_w_cropped.svg.png width="20" height="14" caption="Wiki letter w cropped.svg" link="http://en.wikipedia.org/wiki/File:Wiki_letter_w_cropped.svg"]] || This section requires <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none;">[|expansion] . ||
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Crystal_energy.svg/29px-Crystal_energy.svg.png width="29" height="28" caption="Crystal energy.svg" link="http://en.wikipedia.org/wiki/File:Crystal_energy.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Energy portal] **// ||
 * = [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/40px-Wikinews-logo.svg.png width="40" height="23"]] || Wikinews has news related to: //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|Energy] **// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Barrel of oil equivalent]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Gas oil ratio]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of countries by proven oil reserves]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of oil fields]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|List of petroleum companies]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Manure-derived synthetic crude oil]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Oil burden]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Petroleum geology]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Thermal depolymerization]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Waste oil]
 * 1) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** "Petroleum". //<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Concise Oxford English Dictionary] //
 * 2) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Guerriero V. et al. (2011). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Improved statistical multi-scale analysis of fractures in carbonate reservoir analogues"] (PDF).//Tectonophysics// (Elsevier). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|doi] :<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|10.1016/j.tecto.2011.01.003].
 * 3) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Guerriero V. et al. (2010). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Quantifying uncertainties in multi-scale studies of fractured reservoir analogues: Implemented statistical analysis of scan line data from carbonate rocks"] (PDF). //Journal of Structural Geology// (Elsevier). <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|doi] :<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|10.1016/j.jsg.2009.04.016].
 * 4) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Organic Hydrocarbons: Compounds made from carbon and hydrogen"].
 * 5) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Oxford English Dictionary online edition, entry "petroleum"
 * 6) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Bauer (1546)
 * 7) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] Hyne (2001), pp. 1–4.
 * 8) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Speight (1999), p. 215–216.
 * 9) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Alboudwarej et al. (Summer 2006) (PDF). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|//Highlighting Heavy Oil//] . Oilfield Review . Retrieved 2008-05-24.
 * 10) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Oil Sands – Glossary"] . //Mines and Minerals Act//. Government of Alberta. 2007. Archived from <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|the original] on 2007-11-01 . Retrieved 2008-10-02.
 * 11) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Oil Sands in Canada and Venezuela"] . Infomine Inc.. 2008 . Retrieved 2008-10-02.
 * 12) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|IEA Key World Energy Statistics]  [//<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|dead link] //]
 * 13) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Crude oil is made into different fuels"] . Eia.doe.gov . Retrieved 2010-08-29.
 * 14) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"EIA reserves estimates"] . Eia.doe.gov . Retrieved 2010-08-29.
 * 15) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"CERA report on total world oil"] . Cera.com. 2006-11-14 . Retrieved 2010-08-29.
 * 16) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Heat of Combustion of Fuels"] . Webmo.net . Retrieved 2010-08-29.
 * 17) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Use of ozone depleting substances in laboratories] . TemaNord 2003:516.
 * 18) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** United States Bureau of Standards, "Thermal Properties of Petroleum Products". Miscellaneous Publication No. 97, November 9th, 1929.
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 * 20) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Petroleum Study"] . Osti.gov . Retrieved 2010-08-29.
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 * 40) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**c**//] Mabro (2006), p. 351.
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 * 42) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** U.S. Energy Information Administration. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Excel file] from <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|this] web page. Table Posted: March 1, 2010
 * 43) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** From DSW-Datareport 2008 ("Deutsche Stiftung Weltbevölkerung")
 * 44) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** One cubic metre of oil is equivalent to 6.28981077 barrels of oil
 * 45) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"IBGE"] . IBGE . Retrieved 2010-08-29.
 * 46) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"World Crude Oil Production"] (PDF) . Retrieved 2010-08-29.
 * 47) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[] Natural Oil and Gas Seeps in California
 * 48) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Historical trends in carbon dioxide concentrations and temperature, on a geological and recent time scale. (June 2007). In UNEP/GRID-Arendal Maps and Graphics Library. Retrieved 19:14, February 19, 2011 from<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[].
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 * 50) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Mitchell, John F. B. (1989). "THE "GREENHOUSE" EFFECT AND CLIMATE CHANGE". Reviews of Geophysics (American Geophysical Union) 27 (1): 115–139. doi:10.1029/RG027i001p00115.<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[] . Retrieved February 19, 2011.
 * 51) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Waste discharges during the offshore oil and gas activity] by Stanislave Patin, tr. Elena Cascio
 * 52) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Torrey Canyon bombing by the Navy and RAF]
 * 53) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Pumping of the Erika cargo"] . Total.com . Retrieved 2010-08-29.
 * 54) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Sims, G. K. and E.J. O'Loughlin. 1989. Degradation of pyridines in the environment. CRC Critical Reviews in Environmental Control. 19(4): 309-340.
 * 55) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] A. Y. Itah and J. P. Essien, Growth Profile and Hydrocarbonoclastic Potential of Microorganisms Isolated from Tarballs in the Bight of Bonny, Nigeria, //World Journal of Microbiology and Biotechnology//, Volume 21, Numbers 6-7, October, 2005, doi 10.1007/s11274-004-6694-z, p 1317-1322
 * 56) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">^ <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**a**//] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|//**b**//] Frances D. Hostettler, Robert J. Rosenbauer, Thomas D. Lorenson, Jennifer Dougherty, Geochemical characterization of tarballs on beaches along the California coast. Part I-- Shallow seepage impacting the Santa Barbara Channel Islands, Santa Cruz, Santa Rosa and San Miguel, Organic Geochemistry, Volume 35, Issue 6, June 2004, Pages 725-746, ISSN 0146-6380, DOI: 10.1016/j.orggeochem.2004.01.022. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|[1]]
 * 57) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Anthony H Knap, Kathryn A Burns, Rodger Dawson, Manfred Ehrhardt and Karsten H Palmork, Dissolved/dispersed hydrocarbons, tarballs and the surface microlayer: Experiences from an IOC/UNEP Workshop in Bermuda, December, 1984,//Marine Pollution Bulletin//, Volume 17, Issue 7, July 1986, Pages 313-319. doi:10.1016/0025-326X(86)90217-1
 * 58) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Zhendi Wang, Merv Fingas, Michael Landriault, Lise Sigouin, Bill Castle, David Hostetter, Dachung Zhang, Brad Spencer, Identification and Linkage of Tarballs from the Coasts of Vancouver Island and Northern California Using GC/MS and Isotopic Techniques, //Journal of High Resolution Chromatography//, Volume 21 Issue 7, Pages 383 - 395, doi:10.1002/(SICI)1521-4168(19980701)21:7<383::AID-JHRC383>3.0.CO;2-3
 * 59) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|How Capitalism Saved the Whales] by James S. Robbins, //The Freeman//, August, 1992.
 * 60) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"U.S. Primary Energy Consumption by Source and Sector, 2007"] . Energy Information Administration
 * 61) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|needtitle] UN Energy Program
 * 62) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Amory B. Lovins, E. Kyle Datta, Odd-Even Bustnes, Jonathan G. Koomey, Nathan J. Glasgow. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Winning the oil endgame"] Rocky Mountain Institute
 * 63) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Bioprocessing] //Seattle Times// (2003)
 * 64) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Chris Hogg (2009-02-10). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"China's car industry overtakes US"] .//BBC News//.
 * 65) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** OPEC Secretariat (2008). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"World Oil Outlook 2008"] .  [//<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|dead link] //]
 * 66) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Ni Weiling (2006-10-16). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Daqing Oilfield rejuvenated by virtue of technology"].
 * 67) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Campbell CJ (2000-12). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Peak Oil Presentation at the Technical University of Clausthal"].
 * 68) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Hubbert, Marion King; Shell Development Company (1956).<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|"Nuclear energy and the fossil fuels"] . //Drilling and Production Practice// (Washington, DC: American Petroleum Institute) **95**.
 * 69) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"New study raises doubts about Saudi oil reserves"] . Iags.org. 2004-03-31 . Retrieved 2010-08-29.
 * 70) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** "<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Oil reserves 'exaggerated by one third'] ". Telegraph. March 22, 2010.
 * 71) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** "<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Is ‘Peak Oil’ Behind Us?] ". //The New York Times//. November 14, 2010
 * 72) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** "<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Has the World Already Passed “Peak Oil”?] ". //National Geographic News//. November 9, 2010
 * 73) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** "<span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Military Study Warns of a Potentially Drastic Oil Crisis] ".//<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spiegel Online] //. September 1, 2010.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Akiner, Shirin; Aldis, Anne, ed (2004). //The Caspian: Politics, Energy and Security//. New York: Routledge. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|978-0-7007-0501-6].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Bauer Georg, Bandy Mark Chance (tr.), Bandy Jean A.(tr.)] (1546). //De Natura Fossilium//. translated 1955
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Hyne, Norman J. (2001). //Nontechnical Guide to Petroleum Geology, Exploration, Drilling, and Production//. PennWell Corporation.<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|087814823X].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Mabro, Robert; Organization of Petroleum Exporting Countries (2006). //Oil in the 21st century: issues, challenges and opportunities//. Oxford Press. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|0199207380, 9780199207381].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Maugeri, Leonardo (2005). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|//The Age of Oil: What They Don't Want You to Know About the World's Most Controversial Resource//] . Guilford, CT: Globe Pequot. p. 15. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|978-1-59921-118-3].
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"> Speight, James G. (1999). //The Chemistry and Technology of Petroleum//. Marcel Dekker. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ISBN] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|0824702174].
 * = [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png width="30" height="40"]] || Wikimedia Commons has media related to: //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|Petroleum] **// ||


 * = [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/2/24/Wikinews-logo.svg/40px-Wikinews-logo.svg.png width="40" height="23"]] || Wikinews has related news://**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #3366bb; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px; text-decoration: none;">[|Commodities] **// ||
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Petroleum] at the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Open Directory Project]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Petroleum Online e-Learning resource from IHRDC]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|U.S. Energy Information Administration]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|U.S. Department of Energy EIA – World supply and consumption]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Who are the major players supplying the world oil market?]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|American Petroleum Institute] – the trade association of the US oil industry.
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Oil survey –] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|OECD] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|International Energy Agency]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Oil volume-weight and price converter]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Oil and Gas Industry Learning Center – information on oil and gas processes]
 * <span style="line-height: 1.5em; url(data: image/png; list-style-type: square; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 1.5em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|U.S. National Library of Medicine: Hazardous Substances Databank – Crude Oil]

From []
 * ||||~ [<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|show] ]  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|v] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|d] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|e]    <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Petroleum industry]  || ||

=<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 1.6em; font-weight: normal; line-height: 1.2em; margin-bottom: 0.1em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0px; padding-top: 0px; width: auto;">List of renewable energy topics by country =

From Wikipedia, the free encyclopedia <span style="color: #7d7d7d; display: block; font-size: 11px; line-height: 1.2em; margin-bottom: 1.4em; margin-left: 1em; margin-right: 0px; margin-top: 0px; width: auto;"> <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">This is a **list of renewable energy topics by country**. The list refers to <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|renewable energy] in general, as well as <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|solar power], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|wind power] ,<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|geothermal energy] , <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|biofuel] , and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydro-electricity]. <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|China] is the world's largest producer of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|hydroelectricity], followed by <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Canada]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Wind power] is growing at the rate of 30% annually, with a worldwide <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|installed capacity] of 158 <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|gigawatts] (GW) in 2009, <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[1]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[2]]  and is widely used in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Europe], <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Asia] , and the <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|United States]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[3]] Wind power accounts for approximately 19% of electricity use in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Denmark], 11% in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Portugal] , and 9% in the Republic of Ireland. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[4]] <span style="line-height: 1.5em; margin-bottom: 0.5em; margin-left: 0px; margin-right: 0px; margin-top: 0.4em;">At the end of 2009, cumulative global <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|photovoltaic] (PV) installations surpassed 21 GW <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[5]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[6]]  <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[7]]  and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|PV power stations] are popular in <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Germany] and <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Spain]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[8]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Solar thermal power] stations operate in the USA and Spain, and the largest of these is the 354 MW <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SEGS] power plant in the<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Mojave Desert]. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[9]] The world's largest <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|geothermal power] installation is <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|The Geysers] in California, with a rated capacity of 750 MW. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[10]] Brazil has one of the largest renewable energy programs in the world, involving production of <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|ethanol fuel] from sugar cane, and ethanol now provides 18 percent of the country's automotive fuel. <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|[11]] Ethanol fuel is also widely available in the USA. energy (RE) ||~ Solar power (SP) ||~ Wind power (WP) ||~ Geothermal energy (GE) ||~ Biofuel (BF) ||~ Hydro power (Hydro) || ==<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; color: black; font-size: 19px; font-weight: normal; margin-bottom: 0.6em; margin-left: 0px; margin-right: 0px; margin-top: 0px; overflow-x: hidden; overflow-y: hidden; padding-bottom: 0.17em; padding-top: 0.5em; width: auto;"> References  == <span style="border-bottom-color: #aaaaaa; border-bottom-style: solid; border-bottom-width: 1px; border-left-color: #aaaaaa; border-left-style: solid; border-left-width: 1px; border-right-color: #aaaaaa; border-right-style: solid; border-right-width: 1px; border-top-color: #aaaaaa; border-top-style: solid; border-top-width: 1px; clear: right; display: block; float: right; margin-bottom: 0.5em; margin-left: 0.5em; margin-right: 0px; margin-top: 0.5em;"> From <span style="font-family: arial,helvetica,sans-serif; font-size: 13px; line-height: 19px;">[]
 * ~ Country ||~ Renewable
 * Africa || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Africa] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Africa] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|WP in Africa] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Africa] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Africa] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Africa] ||
 * Asia || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Asia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Asia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Asia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Asia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Asia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Asia] ||
 * Australia || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Australia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Australia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Australia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Australia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in Australia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Australia] ||
 * Austria || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Austria] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Austria] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Austria] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Austria] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Austria] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Austria] ||
 * Brazil || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Brazil] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Brazil] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Brazil] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Brazil] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in Brazil] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Brazil] ||
 * Canada || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Canada] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Canada] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Canada] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Canada] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Canada] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hydro in Canada] ||
 * China || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in China] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in China] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in China] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in China] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in China] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hydro in China] ||
 * Denmark || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Denmark] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Denmark] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Denmark] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Denmark] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Denmark] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Denmark] ||
 * Estonia || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Estonia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Estonia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Estonia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Estonia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Estonia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Estonia] ||
 * European Union || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in the EU] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in the EU] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in the EU] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in the EU] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in the EU] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in the EU] ||
 * Finland || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Finland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Finland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Finland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Finland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Finland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Finland] ||
 * France || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in France] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in France] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in France] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in France] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in France] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in France] ||
 * Germany || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Germany] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Germany] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Germany] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Germany] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Germany] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Germany] ||
 * Greece || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Greece] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Greece] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Greece] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Greece] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Greece] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Greece] ||
 * Iceland || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Iceland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Iceland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|WP in Iceland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Iceland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Iceland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Iceland] ||
 * India || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in India] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in India] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in India] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in India] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in India] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in India] ||
 * Iran || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Iran] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Iran] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Iran] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Iran] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Iran] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hydro in Iran] ||
 * Ireland || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Ireland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Ireland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Ireland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Ireland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Ireland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Ireland] ||
 * Israel || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Israel] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Israel] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|WP in Israel] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Israel] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Israel] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Israel] ||
 * Italy || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Italy] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Italy] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Italy] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Italy] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Italy] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Italy] ||
 * Japan || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Japan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Japan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Japan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Japan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Japan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Japan] ||
 * The Netherlands || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in the Netherlands] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in the Netherlands] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in the Netherlands] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in the Netherlands] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in the Netherlands] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in the Netherlands] ||
 * New Zealand || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in NZ] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in NZ] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in NZ] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in NZ] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in NZ] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hydro in NZ] ||
 * Norway || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Norway] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Norway] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|WP in Norway] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Norway] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Norway] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Norway] ||
 * Pakistan || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Pakistan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Pakistan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Pakistan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Pakistan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Pakistan] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Pakistan] ||
 * Portugal || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Portugal] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Portugal] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Portugal] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Portugal] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Portugal] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Portugal] ||
 * Romania || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Romania] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Romania] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Romania] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Romania] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Romania] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Romania] ||
 * Russia || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Russia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Russia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|WP in Russia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Russia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Russia] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Russia] ||
 * Scotland || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Scotland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Scotland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Scotland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Scotland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Scotland] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Scotland] ||
 * Spain || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Spain] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Spain] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Spain] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Spain] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Spain] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Spain] ||
 * Sweden || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Sweden] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Sweden] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Sweden] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Sweden] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in Sweden] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Sweden] ||
 * Turkey || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|RE in Turkey] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in Turkey] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in Turkey] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in Turkey] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Turkey] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Turkey] ||
 * Tuvalu || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in Tuvalu] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|SP in Tuvalu] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|WP in Tuvalu] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|GE in Tuvalu] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|BF in Tuvalu] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in Tuvalu] ||
 * United Kingdom || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in the UK] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in the UK] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in the UK] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in the UK] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in the UK] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #ba0000; text-decoration: none;">[|Hydro in the UK] ||
 * United States || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|RE in the US] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|SP in the US] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|WP in the US] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|GE in the US] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|BF in the US] || <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Hydro in the US] ||
 * 1) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** Lars Kroldrup. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Gains in Global Wind Capacity Reported] //Green Inc.//, February 15, 2010.
 * 2) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|REN21] (2009). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Renewables Global Status Report: 2009 Update] p. 9.
 * 3) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Global wind energy markets continue to boom – 2006 another record year] (PDF).
 * 4) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|International Energy Agency] (2009). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|IEA Wind Energy: Annual Report 2008] p. 9.
 * 5) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** James Russell. <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|Record Growth in Photovoltaic Capacity and Momentum Builds for Concentrating Solar Power] //Vital Signs//, June 03, 2010.
 * 6) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|REN21] (2009). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Renewables Global Status Report: 2009 Update] p. 12.
 * 7) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|REN21] (2009). <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Renewables Global Status Report: 2009 Update] p. 15.
 * 8) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|World's largest photovoltaic power plants]
 * 9) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(http: //upload.wikimedia.org/wikipedia/commons/2/23/Icons-mini-file_acrobat.gif); background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 18px; text-decoration: none;">[|Solar Trough Power Plants] (PDF).
 * 10) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|"Calpine Corporation - The Geysers"] (http) . Retrieved 2007-05-16.
 * 11) <span style="font-size: 12px; line-height: 1.5em; list-style-image: none; list-style-type: inherit; margin-bottom: 0.1em; margin-bottom: 0.5em; margin-left: 3.2em; margin-right: 0px; margin-top: 0.3em; padding-bottom: 0px; padding-left: 0px; padding-right: 0px; padding-top: 0px;">**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|^] ** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 100% 50%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-right: 13px; text-decoration: none;">[|America and Brazil Intersect on Ethanol]
 * <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[[image:http://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Wind-turbine-icon.svg/28px-Wind-turbine-icon.svg.png width="28" height="28" caption="Wind-turbine-icon.svg" link="http://en.wikipedia.org/wiki/File:Wind-turbine-icon.svg"]] || //**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none;">[|Renewable energy portal] **// ||
 * ||||~ [<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|hide] ]  <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|v] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial !important; background-clip: initial !important; background-color: initial !important; background-image: none !important; background-origin: initial !important; background-position: initial initial !important; background-repeat: initial initial !important; color: #0645ad; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 0px !important; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|d] <span style="background-attachment: initial; background-clip: initial; background-color: transparent; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; border-bottom-style: none; border-color: initial; border-left-style: none; border-right-style: none; border-top-style: none; border-width: initial; font-size: 11px;">**·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; url(data: image/png; background-origin: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; color: #3366bb; padding-bottom: 0px !important; padding-left: 0px !important; padding-right: 13px; padding-top: 0px !important; text-decoration: none; white-space: nowrap;">[|e]    ** Renewable energy by country ** ||
 * > **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Wind] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"> ||> **<span style="display: block; padding-bottom: 0em; padding-left: 0.75em; padding-right: 0.75em; padding-top: 0em;">by region ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Asia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Europe (EU)] ||
 * > **<span style="display: block; padding-bottom: 0em; padding-left: 0.75em; padding-right: 0.75em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|by country] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Australia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Austria] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Belgium] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Brazil] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Canada] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|China] **· ·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Croatia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Denmark] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Estonia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Finland] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|France] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Germany] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Greece] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|India] **·**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Iran] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Ireland] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Italy] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Japan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Malta] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Morocco] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|New Zealand] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Pakistan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Portugal] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Romania] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Spain] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Sweden] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Turkey] **·**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United Kingdom] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United States]  || ||
 * > **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Solar] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"> ||> **<span style="display: block; padding-bottom: 0em; padding-left: 0.75em; padding-right: 0.75em; padding-top: 0em;">by region ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Asia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Europe (EU)] ||
 * > **<span style="display: block; padding-bottom: 0em; padding-left: 0.75em; padding-right: 0.75em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|by country] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Australia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Canada] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|China] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Germany] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Greece] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|India] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Israel] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Japan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Morocco] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Pakistan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Portugal] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Romania] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Spain] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Turkey] **·**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United Kingdom] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United States]  || ||
 * > **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Geothermal] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"> ||> **<span style="display: block; padding-bottom: 0em; padding-left: 0.75em; padding-right: 0.75em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|by country] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Australia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Canada] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Chile] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|China] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Denmark] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Germany] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Iceland] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Indonesia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Japan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Kenya] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Mexico] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|New Zealand] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Philippines] **·**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Portugal] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Romania] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Russia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Turkey] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United Kingdom] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United States] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|West Indies]  || ||
 * = **Portals:** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Energy] **·** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Renewable energy] **·** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Sustainable development] || ||
 * > **<span style="display: block; padding-bottom: 0em; padding-left: 0.75em; padding-right: 0.75em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|by country] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Australia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Canada] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|China] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Germany] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Greece] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|India] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Israel] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Japan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Morocco] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Pakistan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Portugal] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Romania] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Spain] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Turkey] **·**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United Kingdom] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United States]  || ||
 * > **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Geothermal] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"> ||> **<span style="display: block; padding-bottom: 0em; padding-left: 0.75em; padding-right: 0.75em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|by country] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Australia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Canada] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Chile] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|China] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Denmark] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Germany] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Iceland] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Indonesia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Japan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Kenya] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Mexico] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|New Zealand] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Philippines] **·**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Portugal] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Romania] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Russia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Turkey] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United Kingdom] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United States] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|West Indies]  || ||
 * = **Portals:** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Energy] **·** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Renewable energy] **·** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Sustainable development] || ||
 * > **<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Geothermal] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"> ||> **<span style="display: block; padding-bottom: 0em; padding-left: 0.75em; padding-right: 0.75em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|by country] ** ||< <span style="display: block; padding-bottom: 0em; padding-left: 0.25em; padding-right: 0.25em; padding-top: 0em;"><span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Australia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Canada] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Chile] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|China] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Denmark] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Germany] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Iceland] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Indonesia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Japan] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Kenya] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Mexico] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|New Zealand] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Philippines] **·**<span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Portugal] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Romania] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Russia] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Turkey] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United Kingdom] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|United States] **·** <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|West Indies]  || ||
 * = **Portals:** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Energy] **·** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Renewable energy] **·** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Sustainable development] || ||
 * = **Portals:** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Energy] **·** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Renewable energy] **·** [[image:http://upload.wikimedia.org/wikipedia/commons/thumb/f/fd/Portal-puzzle.svg/16px-Portal-puzzle.svg.png width="16" height="14" caption="Portal"]] <span style="background-attachment: initial; background-clip: initial; background-color: initial; background-image: none; background-origin: initial; background-position: initial initial; background-repeat: initial initial; color: #0645ad; text-decoration: none; white-space: nowrap;">[|Sustainable development] || ||