In a close-looped system, geothermal energy extracts hot water and steam from the earth naturally, which turn a turbine to generate electricity, before reinjecting the fluid back into the earth to complete the cycle.
Image: United States Department of Energy Geothermal Technologies Office
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Salt Wells Geothermal Plant in Nevada
Through historical Recovery Act investment by the Energy Department, the Salt Wells geothermal area in Nevada has yielded several developments, including the 13 MW Salt Wells plant that Enel Power operates today.