[globular-toast]

Well, even if everyone did have heat pumps, let's think about it a bit. I upgrade my system about once a week. I reckon on average it's about 1 hour of compiling per week but let's say 2 to be safe. That's no more than 1 kWh per week. A fridge-freezer will use that in a day. An electric oven will use that in 15 minutes. An electric car will use that travelling 3-4 miles. Most households use something like 30 kWh per day to heat. Even if a heat pump made that like 10 kWh it's still a drop in the ocean. And don't forget the resulting binaries run slightly more efficiently because they are compiled specifically for my CPU, plus I enjoy it.