The greenies won't care to admit it but Bitcoin has finally provided the motivation to pursue cheap, efficient, reliable renewable energy where all they've ever had to offer was financially-punishing "save the planet" vibes.
Depending on the source, 50% (+-20%) of crypto mining is already powered renewably.
Isn't that true for every user of electricity?
My country has an obnoxious "incentive" structure where the power companies aren't actually required to pay me for the energy I generate. They give me "kWh credits" which expire if unused for over one year. So I have no reason to generate more energy than I need.
Cryptocurrency changed everything. It allowed me to sink my surplus energy production into proof-of-work. I get paid for it and get to support an amazing project like Monero.