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Geothermal Energy



Earth's Crust


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Hot spring

Hot water or steam from below ground can also be used to make electricity in a geothermal power plant. Geothermal comes from the Greek words geo, meaning earth, and therme, meaning heat. Geothermal literally means "earth heat".

Geothermal energy uses steam or hot water in the earth’s crust to power turbines or to heat buildings or water. The earth’s crust contains a large amount of energy. The lava that flows from a volcano is a vivid example of the energy in the earth’s crust. If the local geography has the right features, geothermal facilities can be installed. The facilities capture steam as it escapes from cracks or holes in underground rocks. Geothermal energy requires a source temperature of more than 100°C to drive a generating turbine.

Hot water from within the earth can heat buildings with no conversion.











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