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There are all sorts of things that are technically possible but the materials handling requirements do not make them cheap/efficient enough to do practically without electricity. See aluminum ore processing for example.



A house may be "a machine for living in" but the scale of the solutions needed aren't as serious as industrial processes like mining surely? I haven't lived in a structure using them, but there are Phase Change[1] insulations out there, for example.

1: https://en.wikipedia.org/wiki/Phase-change_material




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