The Advantages of Geothermal Energy, the Largely Unknown Green Energy
April 25th, 2008
Geothermal energy is a renewable green energy source that is largely unknown. Mainly because the more popular green energy choices like wind power and solar energy seem to get a lot more press. However does that mean geothermal energy isn’t a valid green energy choice? Of course not, the main reason why geothermal energy doesn’t attract much attention is due to the capital costs associated with setting such a green energy system up. We are trying so hard at developing other green energy choices that we seem to be ignoring one of the biggest free sources of energy that runs our entire planet, namely heat. Without the heat generated by our planet I don’t much if any life could abound. If that is the case then what are the advantages of geothermal energy? Well before we answer that question let’s answer this one how does geothermal energy work?
Geothermal energy is the process of harnessing the earth’s thermal energy (heat) and converting it into electricity. The Earth has four main layers, as is shown in the picture below. Each layer within the earth has different compositions and temperatures as the picture illustrates. Since heat radiates outwards some of that heat is held by nearby rocks water and earth. In fact up to 40% of the suns rays get absorbed the earth and then release that energy at night.
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Have you ever thought about powering your home with renewable energy but find it too expensive? Well you not alone, for most people the ability to go green just isn’t very practical due to the high costs associated with converting over to solar or wind power green energy.