this post was submitted on 01 Feb 2026
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I guess we're calling geothermal energy "reverse solar" now. This is silly marketing.
Well technically everything is solar in some form or another.
Fossil fuels - dead plants that got their energy from the sun Nuclear(fission) - Uses elements only created from the dying phases of a sun Hydro - Energy that’s created from the sun heating and moving water around Wind - same as above just air instead of water Geothermal - This one is trickier but planets are formed from dead stardust. I guess gravity fits in here somehow. Biomass - see fossil fuels but without as much waiting
The only one I can think of that isn’t solar is nuclear fusion. And this is essentially recreating a star.