The name "geothermal" comes from two Greek words: "geo" means "Earth" and "thermal" means "heat". As long as Earth has been around, Geothermal energy has existed. Almost everywhere, the shallow ground or upper 10 feet of the Earth's surface maintains a nearly constant temperature between 50° and 60°F (10° and 16°C).
The heat we get from the earth is called geothermal energy.
Geothermal energy is clean and sustainable.
- Geothermal energy is a renewable energy.