How does geothermal energy work?

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Geothermal power plants use steam from hot water reservoirs to generate electricity. Ground-source heat pumps can extract thermal energy at colder temperatures for cooling.  Geothermal energy is a renewable energy source that can be used for heating and electricity generation. It's a clean and sustainable resource that comes from the heat of the earth.  Geothermal energy is one of the most environmentally friendly and least polluting sources of energy. It has less impact on the Earth than any other power source.  Factors that influence geothermal energy applications... Show more

How does geothermal energy work?