harnessing heat and steam generated below Earth's surface

Heat recovered energy from deep within the earth for power generation, process heating or district heating using a subsurface closed loop working fluid system and surface power generation plant.

Energy produced from subterranean heat.

Energy derived from the earth's heat that comes from decay of naturally occurring radioactive materials in the earth's crust, magma, and friction caused by movement of tectonic plates.

Energy derived from the internal heat of the earth.

the Earth's interior heat made available by extraction of geothermal fluids.

Energy useful to human beings that can be extracted from steam and hot water found within Earth's crust.

Energy extracted from heat contained in rocks near the earth's surface.

This alternative energy source uses the heat of the earth for direct-use applications, geothermal heat pumps, and electrical power production. Geothermal technologies are beneficial, because they release little or no air emissions. In comparison to conventional energy technologies, geothermal power produces much lower air emissions.[vii

Geothermal energy is a clean, renewable energy resource that uses heat from the earth.

Energy generated by using the heat energy of the crust, especially in volcanic regions.

energy from the internal heat of the earth, which may be residual heat, friction heat, or a result of radioactive decay. The heat is found in rocks and fluids at various depths and can be extracted by drilling and/or pumping.

energy derived from the heat in the interior of the earth

a renewable resource in that the heat generated in the earth will still be around for millions of years

energy from the inner core of the earth; specifically from hot, molten rock pushing through to near the surface of the earth heating the water.

Heat energy derived from the Earth's interior.

Heat energy released deep underground as a result of radioactive processes. Energy

Power generated by the harnessing of heat from the interior of the earth when it comes to -or close to – the earth's surface. The regions with highest underground temperatures are in areas with active or geologically young volcanoes. The term geothermal energy is also sometimes used to describe groundsource heating (see "groundsource heating")

tapping the massive temperatures beneath the Earth's crust either directly for heating systems or to create electricity through steam turbines. The planet's internal heat melts rock and heats up underground gases and water. These in turn heat the water in the lower strata of the earth's crust which then bursts through to the surface as hot steam or liquid, creating the periodic eruptions, normally found in volcanic regions, that we call geysers.

the internal heat of the earth collected from underground concentrations of steam or hot water trapped in fractured or porous rock.

The word "geothermal" literally means "Earth" plus "heat". To produce electric power from geothermal resources, underground reservoirs of steam or hot water are tapped by wells and the steam rotates turbines that generate electricity.

The heat energy in the earth's crust. The source of this energy is the earth's molten interior.

Natural heat contained in the rocks, hot water and steam of Earth's subsurface; can be used to generate electricity and heat homes and businesses.

Heat generated by natural processes within the earth. Chief energy resources are hot dry rock, magma (molten rock), hydrothermal (water/steam from geysers and fissures) and geopressure (water saturated with methane under tremendous pressure at great depths).

Energy drawn from the internal heat of the earth, either through geysers, fumaroles, hot springs, or other natural geothermal features, or through deep wells that pump heated groundwater.

Power generation using natural steam derived from the Earth's internal heat.

Using the heat from the earth to produce power.

heat transferred from the earth's interior to underground rocks or water located relatively close to the earth's surface.

energy derived from the heat of the earthâ€(tm)s core. Geothermal energy sources include steam, hot water or hot rocks lying close to the earthâ€(tm)s surface.

renewable source of energy from the internal heat of the earth. Examples: steam, volcanoes, hot springs.

Energy available in the ground and rocks beneath the Earth’s crust. Geothermal energy resources include hot temperature sources such as hot rock, molten rock and geysers and lower temperature sources in the ground one or two metres below the surface.

is energy obtained by the transfer of heat to Earth's surface from its depths. A natural hot spring is one such example.

Hot water or steam extracted from geothermal reservoirs in the earth's crust. Water or steam extracted from geothermal reservoirs can be used for geothermal heat pumps, water heating, or electricity generation.

heat energy produced inside Earth

Energy derived from heat transferred from the earth's molten core to underground deposits of dry steam (steam with no water droplets), wet steam (a mixture of steam and water droplets), hot water, or rocks lying fairly close to the earth's surface. (Source: Adapted from U.S. Environmental Protection Agency)

Heat energy stored in the earth's crust by the absorption of solar energy and by conduction with the earth's hot interior. This underground or underwater temperature source is used for the operation of a heating and cooling system - heat pump

energy generated from the hot rocks under the Earth's surface

Energy contained in the earths heat as steam water and hot rock

Natural heat from within the earth, captured for production of electric power, space heating or industrial steam.

Heat transferred from the earth's underground concentrations of (1) dry steam (steam with no water droplets), (2) wet steam (a mixture of steam and water droplets), or (3) hot water trapped in fractured or porous rock.

Energy available in the molten and semimolten rocks beneath the earth's crust. The high temperatures that this creates in adjacent solid rocks in certain areas causes sub-surface water to be superheated or converted into steam, which can be used for direct space heating or converted into electricity in a conventional power plant.

Energy from the heat inside the Earth, usually carried to the surface by superheated water and steam.

Geothermal energy is the natural heat of the earth stored deep below the earth's surface. It can be in the form of steam, hot liquid or hot dry rock. Wells drilled deep into the ground bring steam and hot water to the surface. The steam, or steam produced by the fluids in a heat exchange process, is used to drive a turbine generator to make electricity. Modern technology allows spent geothermal fluids and non-condensable gases to be reinjected back into the ground, eliminating surface disposal and air pollution.

The potential energy contained in the Earth. Molten rock heats underground water into a stream, which, in some locations, may be harnessed to drive turbines to generate electricity.

Energy from natural "hot spots" in the earth's crust, associated with hot, dry rock or large reservoirs of steam or hot water.

The heat energy that is stored below the earth's surface.

As used at electric power plants, hot water or steam extracted from geothermal reservoirs in the Earth's crust that is supplied to steam turbines at electric power plants that drive generators to produce electricity.

The earth's interior heat made available to man by extracting it from hot water or rocks.