What is geothermal energy ? How can it be used commercially ? List in

What is geothermal energy ? How can it be used commercially ? List in tabular form three distinguishing features between a thermal power plant and a geothermal power plant.

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The underground water comes in contact with 'hot spots' present in the earth's crust and stream is generated. This energy possessed by the hot water below the earth is called Geothermal energy.

It can be used to produce electricity.

S No.	Thermal Power Plant	Geothermal Power Plant
(i)	Uses coal as fuel.	Uses underground not water.
(ii)	Causes pollution.	Does not cause pollution.
(iii)	The fuel used is very expensive.	The fuel is free of cost.

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What is geothermal energy ? How can it be used commercially ? List in tabular form three distinguishing features between a thermal power plant and a geothermal power plant.

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