And it's very often _not_ stranded power, too. And there's no way to ensure it's _only_ stranded power being used. If it's more efficient to turn power into B

And it's very often _not_ stranded power, too. And there's no way to ensure it's _only_ stranded power being used. If it's more efficient to turn power into Bitcoin than to sell it to your neighbour, well, the fuel gets burned and turned into CO2 and Bitcoin instead.