Author: altaadmin

A clean and renewable energy source, geothermal energy has been used to generate electricity in the U.S. for decades. The obvious question is, “Why is so little attention given to geothermal energy?” The simple answer is there just aren’t many locations where nature has made geothermal energy easily available. Geothermal energy occurs naturally when water from surface sources like rain water, lakes or aquifers finds its way down through the earth to hot rock formations deep underground. When this water comes in contact with hot rock, hot water and steam may rise to the surface in the form of geysers or hot springs. Some of the better known natural geothermal locations are Yellowstone National Park and The Geysers in Northern California. While these locations make popular tourist attractions, they are also marvelous demonstrations of clean, renewable geothermal energy.

Renewable energy presents clear and widely-touted environmental and security advantages over non-renewable sources. But renewables are not interchangeable. Beyond their base similarities, wind, solar, and geothermal energy each presents a unique scenario of power output, cost, implementation requirements, land use, visual impact, and other factors. To emphasize renewable energy is an important first step. But we must look beyond that broad category at the specific technologies in question. The following comparison explores some of the differences between the leading renewable energy types, including geothermal in general, EGS in particular, wind, and solar power.