The Renewability of Geothermal Energy

 

 

International organisations have classified geothermal energy as a renewable energy source, but it is sometimes stated that this is not the case. The meaning of the concepts “renewable energy sources” and “sustainable energy production” is discussed in this paper. Comparison is made with the resources of hydropower and fish stocks in order to clarify the meaning of the two concepts. It is found, that the rate of energy recharge to geothermal systems is the most critical aspect for the classification of geothermal energy as a renewable energy source. In the exploitation of natural geothermal systems, the recharge of energy takes place by advection of thermal water at the same time scale as the production from the resource. [via]
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The Renewability of Geothermal Energy

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