Bitcoin mining accelerates the transition to renewables. https://www.whatbitcoindid.com/podcast/can-bitcoin-mining-sa...
And bitcoin does not use electricity, it just flat out wastes it. And that's not because bitcoin in itself is useless (it is), but due to the design of the Proof-of-Waste. Electricity use implies that electricity is converted into something. Every iPhone uses X Wh. If you dail up the usage, the output increases. It's not perfectly linear, but that's a reasonable approximation. Bitcoin is different: More electricity will never produce a better service, more bitcoins or whatever. Bitcoin will not ever get better by using more. And yet it is designed to waste a amount of electricity proportional to it's price. Oh, and it is only profitable to mine if you use a below-average electricity price. E.g. use the laxes regulations, the most polluting or the most illegal sources of electricity.