A mechanical-compression cycle system that can be reversed to either heat or cool a controlled space
Natural flow of hot water representing the surface expression of a hydrothermal system and a sign of a potential geothermal energy resource.
Underground volume of rock from which geothermal heat energy is extracted and used for electricity production or direct use. Conventional geothermal resource reservoirs are hosted by hydrothermal systems.
Enhanced Geothermal System (EGS)
Unconventional geothermal resources that contain heat similar to conventional hydrothermal resources but lack the necessary groundwater and/or rock characteristics (e.g., permeability) to enable energy extraction without stimulation.
Geothermal energy is an important renewable energy resource. These are sources of energy that have endless supply, which are commonly used to generate electricity, including hydro, solar, and wind. Geothermal energy is available day and night and irrespective of weather, complementing the other forms of renewable energy.