![]() geothermal reservoirs are located in the western states, Hawaii, and Alaska, where the boundaries between massive plates in Earth’s crust provide a concentration of geological activity.Īlthough the United States generates more electricity from geothermal energy than any other country in the world, in 2015 it accounted for a small fraction of 1% of our total energy supply. geothermal reservoirs are located in the western states, Hawaii, and Alaska, where the boundaries between massive plates in Earth’s crust provide a concentration of geological activity that traps the heat generated by nuclear decay of radioactive elements. Moderate- to low-temperature geothermal resources are also used to heat buildings directly and to provide space heating through district heating systems in which heat is distributed to residences and commercial buildings from a central source. This energy is harnessed to generate electricity when water is injected deep underground and returns as steam (or hot water, which is later converted to steam) to drive a turbine on an electric power generator. Geothermal energy is produced by the heat of Earth’s molten interior. ![]()
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