Geothermal energy plant

Geothermal energy plant

Arnaldur Halldorsson/Bloomberg

Steam rises from the HS Orka geothermal energy plant near the Blue Lagoon thermal spa at Grindavik, Iceland. Iceland’s geothermal capacity grew to 951 megawatts last year from 65 megawatts in 2000, according to data compiled by Bloomberg News.