Geothermal energy is heat energy from the earth. Geothermal resources are reservoirs of hot water that exist or are human made at varying temperatures and depths below the Earth's surface. Wells, ranging from a few feet to several miles deep, can be drilled into underground reservoirs to tap steam and very hot water that can be brought to the surface for use in a variety of applications, including electricity generation, direct use, and heating and cooling.
Benefits of Geothermal Energy are Renewability, Baseload, Domestic, Small footprint and Clean.
Geothermal energy is a closed loop system where steam is condensed into water and piped back into the earth to replenish the underground reservoir.