Renewable sources—geothermal and hydropower—provide effectively all of Iceland's electricity[125] and around 85% of the nation's total primary energy consumption,[126] with most of the remainder consisting of imported oil products used in transportation and in the fishing fleet.[127][128] Iceland expects to be energy-independent by 2050. Iceland's largest geothermal power plants are Hellisheiði and Nesjavellir,[129][130] while Kárahnjúkar Hydropower Plant is the country's largest hydroelectric power station.[131] When the Kárahnjúkavirkjun started operating, Iceland became the world's largest electricity producer per capita.[132]
Icelanders emit 6.29 tonnes of CO2 in 2009 equivalent of greenhouse gases per capita.[133] Iceland is one of the few countries that have filling stations dispensing hydrogen fuel for cars powered by fuel cells. It is also one of a few countries currently capable of producing hydrogen in adequate quantities at a reasonable cost, because of Iceland's plentiful renewable sources of energy.