https://www.britannica.com/technology/solar-pond
Solar ponds are low cost but high maintenance. A layer of brine at the bottom of a hemispherical excavation, else a clear plastic membrane, is about all it takes.
It's only heat but you can do a lot with that.
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
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