Rock isn't very thermally conductive. Geothermal plants work great where the crust is thin, but for the rest of the planet you have to do a lot of drilling to g

Rock isn't very thermally conductive. Geothermal plants work great where the crust is thin, but for the rest of the planet you have to do a lot of drilling to get not much heat. https://dothemath.ucsd.edu/2012/01/warm-and-fuzzy-on-geothermal/ https://dothemath.ucsd.edu/2012/01/warm-and-fuzzy-on-geother...