But, that'll cool the iron core, allowing it to solidify. That'll simultaneously collapse earth's magnetic field, and act like a giant brake shoe, stopping earth's rotation: we'll all fly off into space!
I kind of like this: https://www.quaise.energy/
Very deep, very hot geothermal. The idea is to dig the wells using high power microwave energy since regular drills will not work. Drill these near to thing like steam powered coal power plants to replace the use of coal.
Whether this is feasible I don’t know. In theory it should work nicely, just an issue of making the deep holes. At any rate, I think some scheme like this will be the solution - not fusion, not wind, not solar.
But, that'll cool the iron core, allowing it to solidify. That'll simultaneously collapse earth's magnetic field, and act like a giant brake shoe, stopping earth's rotation: we'll all fly off into space!