https://mliebreich.substack.com/p/big-news-closed-loop-geothermal-delivers
This is tech worth watching I think and I hope it becomes more of a thing. Having a renewable that isn't dependent on the weather would be really beneficial. I wonder if old fracking sites could be converted?
The UK is using old coal mines.
How heat from old coal mines became a source of local pride in this northern English town – new study
https://theconversation.com/how-heat-from-old-coal-mines-became-a-source-of-local-pride-in-this-northern-english-town-new-study-269959