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Geothermal energy technology – renewableenergyworld., Geothermal energy is the heat from the earth. it’s clean and sustainable. resources of geothermal energy range from the shallow ground to hot water and hot rock found.
Geothermal electricity production basics | nrel, Geothermal electricity production basics. geothermal power plants use steam produced from reservoirs of hot water found a few miles or more below the earth’s surface.
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Geothermal energy united states – wikipedia, , Geothermal energy united states. 21 power plants geysers, california, largest geothermal systems..