So to get it down to 100 years you'd need 160^2 = 25,600 geothermal plants.
Perfectly reasonable, let's do it.
Most people want cheap power. Anything over around 20 cents a kWh makes it uncompetitive to fossile equivalents (e.g. wood / oil / gas heating).
Judging by the price tag of 9.1 Ksh/kWh listed on https://en.wikipedia.org/wiki/Energy_in_Kenya (and looking up historical exchange rates because of the date of the link and their persistent inflation), that's about 0.085-0.090 USD/kWh.
Geothermal is however one of the electricity sources with the fewest negative externalities so definitely should be pursued where possible.
Not theoretical at all:
https://www.canarymedia.com/articles/geothermal/americas-fir...
The U.S. is an extremely productive economy with at least one enormous cyclical natural catastrophe attached to it. If this natural catastrophe is preventable, and the costs of prevention are outweighed by the costs of losing the US economy, then it's probably worth doing.
I just assumed that it was one of those things that isn't economically or technically feasible.
Cries in European
