Several attributes make it a good source of energy.
First, it's clean . Energy can be extracted without burning a fossil fuel such as coal, gas, or oil. Geothermal power is homegrown , reducing our dependence on foreign oil. Even in geothermal areas dependent on a reservoir of hot water, the volume taken out can be reinjected, making it a sustainable energy source. However, Earth energy can be tapped almost anywhere with geothermal heat pumps and direct-use applications.