I am not convinced this carbon-intensive form of money laundering is a good thing, but it certainly exists.
EDIT: went looking for data and it's estimated that ~63% [1] of power used in bitcoin proof-of-work operations. I honestly thought this figure would be higher, but with the insane campaign the American government is doing to invest and expand on drill operations this could go up in the short term. Long term though it's unlikely that this will keep up and we should see renewable sources gaining space more and more, just because it's the smart thing to do.
My general point is that you can exchange money for energy and energy for crypto, and nobody can really stop you if you're doing it at a small enough scale. Siphon the fuel from your car and run a generator, pretend you're charging your EV, whatever.