Using hot water found underground near geologically active features to generate electricity is called

Geothermal energy is the energy found by using hot water underground near geologically active features.
Geothermal energy is termed as renewable energy-source reason being that the water which is replenished by heat and by rainfall it continues to be produced in the earth. It is generated four thousand miles below the surface in the earth's core. The hotter temperatures then the surface of the sun they continue to be produced inside the earth by decaying slowly of radioactive particles and this is the process which happens in all rocks.