There is a caveat to this. It’s been a few years since I read the article, but oftentimes the reason Bitcoin miners run on renewables is because they set up shop in places that have established local cheap electricity.
The example in the article was a town with ideal geography for hydro power, to the point electricity was cheap enough to sell it to the next town over. Crypto-miners set up in the first town and quickly began using more power, driving up the cost and eventually causing serious issues for the second town as there wasn’t enough electricity leftover to send their way anymore.