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Yes, Geothermal Energy can not be always Renewable. Why? That is important. As Earth Core keeps its temperature always constant around the clock and calander. So as long as we are using normal Under Earth Temeprature, then we are using renewable Energy. However, in some countries, there are extensive Volcanos those provide additional Energy. In those areas, this energy is used as Geothermal Energy and these Volcanos are subject to depletion over the scale of time. And there is not certanity that these volcanos would be revived or not. Therefore, such Geothermal Energy can't be graded as Renewable Energy.
Please you to add useful information tu enhance other's knowledge. We are expecting righ answer from your side. Thanks for putting u p such useful question.
Regards,
apologize i'm not expert on this filed
Because you are depending on the internal water that is coming from underground and based on the location ( if it rains a lot, if there is a sea or a river that internal water depends on). Also, we need to consider the amount of use of the water in the geothermal plants to see if the source used is renewable or not
I apologize this is not my specialist
Geothermal Energy is not always renewable energy source because the over time extraction of heat from earth's crust may cause depletion, resulting to some geothermal wells cool down and run out of water. Hence, Geo-Sciences group are always in the search of areas where possible source of steam.
Because after years of "extraction" the warm is dissipated. So your well will get always colder and colder.