Thats for sure but, where does that energy come from? I would say it comes from the earths own rotation, would this infinitesimally slow the earth rotation?
Anyway this is fascinating stuff!
Anyway this is fascinating stuff!
Maybe you‘re thinking of tidal power plants? Tides are gravitationally caused, and as far as I know tapping into them infinitesimally changes Earth‘s rotation (and to some extent probably also Earths and the Moon‘s orbit).
To your question, I'm wondering if they simply pump down water and extract resulting steam once it reaches the point of vaporization? The steam condensers and everything else are already built on-site for coal generation.
One difficulty would be handling any accumulated minerals that got into the steam loop from interaction with the rock in the hole. Unlike traditional closed-loop steam generator, an open system would pick up contaminants and eventually cause scaling.