Deep below the Earth’s surface, heat is generated in special granite rocks, and trapped by layers of insulating sedimentary rocks. Geothermal energy is produced by using this naturally occurring heat to generate electricity. Wells are drilled to a depth of three to five kilometres, water is pumped into the wells and through cracks in the rocks, the heat of the rocks causes the water to be heated and turn to steam which turns a turbine to produce electricity. The steam is condensed back into water and used again.
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Jun 11, 2018
Geothermal energy
Geothermal energy
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