i hope im not speaking out of turn or for someone else, but nostr:npub1f5pre6wl6ad87vr4hr5wppqq30sh58m4p33mthnjreh03qadcajs7gwt3z is doing some interesting things on his homestead, btc mining food dehydrator, a heater, etc. check his notes here. he doesn't talk specifics, but he may point you in a direction.