The Geothermal Industry uses the heat from the Earth as a clean, renewable resource that provides energy in the U.S. and around the world through a variety of applications and types of resources. Large-scale geothermal plants utilizing deep resource temperatures between ~200˚F and 700˚F have been producing commercial power in the U.S. since the 1960s. Geothermal energy development and production is a thriving international market.