[Michael.SF.]

I said: The problems you refer to have been solved and are used on a daily basis. Correction:

Many of the problems you refer to have been solved and Geothermal Energy is succesfully used on a daily basis.

[Wonder Warthog]

"Many of the problems you refer to have been solved and Geothermal Energy is succesfully used on a daily basis."

In a very limited area, where it happens to be both readily accessible and near population centers, which set of special conditions is exceedingly rare.

But the "universal geothermal energy" proposed here is sheer crackpottery.