Geothermal electricity plant, Iceland. Iceland uses geothermal energy to produce electricity and Reykjanesvirkjun, a geothermal power plant commissioned in 2006, generates around 100 MW. The energy is taken from 12 boreholes, 1800-2600 metres deep, at a temperature of 285-315 degrees Celsius. This is the highest temperature currently used for electricity generation. Seawater is used for cooling. The power plant comprises several buildings beside the powerhouse including conveying stations and dividing stations. About 25 per cent of Iceland's electricity is generated by geothermal power plants. Photographed in Reykjanes, Iceland.