Despite an uncertain economy, geothermal heat pump adoption is increasing in the United States. Over 1,000,000 geothermal (or ground-source) heat pumps are used in U.S. residential, commercial and government buildings. And each year, U.S. homeowners install approximately 50,000 more geothermal heat pumps. American homeowners are clearly warming up to the fact that green geothermal energy is available anywhere in the United States - literally in their own back yard, thanks to ground water heat pumps. [Find out more about geothermal heat pump shipments by U.S. region.]
The big news: compared with other sources of energy, geothermal energy is only beginning to reach its potential - even though the history of geothermal energy in the U.S. dates back more than 10,000 years and first geothermal ground-source heat pump was installed in 1945.