I am fan of clean energy. And the fact that it helps bitcoin mining to be green as well is a no brainier :)
Nuclear fusion is cool but it still not know that it can be done. If it is done-it also has to be cost effective so we're making more energy that we spend.
As of right Nuclear Fission is great-a main on front cost and boom-almost free energy. However the current Nuclear Fission infrastructure is not safe. Thorium fixes that. Watch this video for more info:
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From @sames