Enhanced Geothermal Systems (EGS)

Enhanced Geothermal Systems (EGS) differ from traditional geothermal technology in their magnitude; they're much larger. Traditional geothermal technology relies on naturally occurring pockets of steam and hot water. The Western United State, particularly along the Pacific Rim, is an ideal spot for this technology due to its volcanic conditions.

Enhanced Geothermal Systems replicate the conditions naturally found in places like the Pacific Rim by fracturing the rock deep beneath the earth's surface, and pumping in cold water. When the water travels back up to the surface, it is forced out as hot water and steam--which is then converted into electricity using a steam turbine or a binary plant system.

This method for extracting the heat from the earth's core and converting it into energy is still being tested. Some argue that the deep drilling could cause earthquakes. Seismologists believe the Basel, Switzerland project did just that when several small earthquakes followed the drilling in December 2006.

Ground Source Heat Pumps used to heat and cool homes and businesses do not require the same geological conditions as traditional geothermal technology, nor do the drill two miles into the earth to fracture the rock and pump in water as with EGS. In fact, GSHP can be installed almost anywhere. While Enhanced Geothermal Systems are still in the research phase, GHSP are a clean, safe alternative for heating and cooling your home or business.