The basic principles at work in geothermal energy production, and three different ways the Earth's heat can be converted into electricity. © U.S. Department of Energy
Author: Laura Toffetti, DensityDesign Research Lab. This file is licensed under the Creative Commons Attribution-ShareAlike 4.0 International license.
An energy-efficient heating and cooling alternative, the geothermal heat pump system moves heat from the ground to a building. © U.S. Department of Energy
