The Earth’s heat is there to be made a useful ally.
We use heat pumps where we go maybe 200 meters down to find temperature differences of a few degrees, and save energy.
But the deeper you get the hotter it becomes. The thermal gradient varies over the Earth, and in some places you have temperatures of several hundred degrees a few kilometers down.
Oil technology drilling techniques now makes it possible to drill deep down – say 5-10 km. Several wells can be drilled in the same area, and the drilling techniques are advanced so that well systems can be made from interconnected wells. Even lateral precise drilling is possible.
There are technical challenges – surely – but these can be handled in due course.
Stable, kind, sustainable, even invisible energy anybody? Why not? The heat is on – always has been.
