

Move into a cold climate, and buy a house that has only electric heaters. Those were popular in the 70s, and nobody wants them now, so you can buy one with pocket change. Build a mining cluster in one bedroom and install air ducts to distribute the warm air throughout the rest of the house.
It’s doable, but you’ll need at least four heat pumps in series. Each one would bump up the temperature of the water, until you get 165 °C steam. The last few steps aren’t very efficient, but it’s still cheaper than using electrical heaters. Those heat pumps will take a fair bit of space and money. Oh, and those machines make as much noise as a big freezer. Other than that, it should be fine.