Renewable Energy : Geothermal Energy

Consumer Energy Center - Geothermal
Geothermal energy is produced by the heat of the earth and is often associated with volcanic and seismically active regions. California has 25 known geothermal resource areas, 14 of which have underground water temperatures of 300 degrees Fahrenheit.

About Geothermal Energy
Geothermal (earth heat) energy has tremendous potential for producing electricity. About 8,000 megawatts (MW) of geothermal electricity are currently produced around the world, including about 2,800 MW of capacity in the United States.

How Geothermal Energy Works
Information on renewable energy, including wind and solar power; nuclear-power safety issues and work of the Union of Concerned Scientists to switch America to clean, safe, renewable, and affordable power.

Idaho National Laboratory
The Idaho National Laboratory Geothermal Energy Program.

Geothermal Electricity Production
Geothermal power plants use steam produced from reservoirs of hot water found a couple of miles or more below the Earth's surface. There are three types of geothermal power plants: dry steam, flash steam, and binary cycle.

Geothermal Energy Index
Free energy from the earth. Geothermal energy can be tapped either at or near the surface, or from magma miles below the Earth's surface.

Geothermal - PESWiki
Main Geothermal index at PESWiki.

Atlantic Geothermal
Envisioning a deep-earth heat canal providing new energy for New England.