History of Geothermal Energy

Geothermal energy refers to thermal energy (heat energy) which is generated and stored beneath the Earth's crust. Other than the origin of this planet, the development of geothermal energy within the interior of the Earth can be attributed to radioactive decay, volcanic activity, etc. As far as power generation is concerned, geothermal energy used in the form of steam to rotate turbines and generate electricity. Even though the use of geothermal energy for power generation has made it quite popular of late, very few people know that it has been used in different forms by mankind for several hundreds of years.