alt Hacker NewsWhy not is explained in David McKay's book Sustainable Energy - without the hot air
https://www.withouthotair.com/c16/page_96.shtml
The problems are that rock isn't a good conductor of heat, so once you've cooled a bit down, you have to wait for it to warm up. Warming only happens very slowly at the rate of < 50mW / m² which limits the amount of power you can get out.
Replies
hodgehog11 • yesterday at 4:11 PM
That's a really good point, and it does take the wind out of the sails. Isn't it possible that eventually we could drill deeper?
Couldn't you frac the rock like they do with oil and gas drilling or have a branching borehole?