Heat isn't wasted if you live somewhere you need to heat your house anyway. Many people turn energy -> heat without any 'useful' byproduct in between. Imagine i

Heat isn't wasted if you live somewhere you need to heat your house anyway. Many people turn energy -> heat without any 'useful' byproduct in between. Imagine if instead they got free bitcoin or cancer research or server hosting in the middle - there's actually a company that is already working on that - putting servers in people's houses to heat them. But anyway, it also produces a unique currency system with many benefits.