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Dave, geothermal is not tied to fracking. It is like a heat pump that uses heat from the earth. I think perhaps we need to stop thinking of energy primarily in terms of large scale, and think more about a range of small-scale environmentally responsible sources that supplement each other.

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There is geo thermal for household heat. Simple but long term payback

Then there is commercial geothermal that creates steam to run turbines to generate electricity. Two different animals

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But, as I tried to point out earlier, limited to places that are "hot spots" unless you plan to dig very very deep wells. As a professional hydrogeologist along the arc of my career, I can assure you that that presents some significant challenges. Which is one of the things that led me to the next part of my career. Now I think I'd like to return to the main focus of this forum, rather than get sidetracked into something that definitely does need discussion, but probably not here.

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Yes, also less susceptible to big grid cyber attacks!

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I'm wondering if the power to run the electrical components- fan etc. is to what he refers.

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