I have heard ideas of having people operate server racks to help heat their homes. That way the compute power would be worth it, and the heat would be useful. P

I have heard ideas of having people operate server racks to help heat their homes. That way the compute power would be worth it, and the heat would be useful. People could rent the server racks, and be paid for doing the computations, covering the cost of electricity, plus get a cheaper heating bill. To really be practical it would require useful homomorphic encryption and fast internet speeds, though.