I used to live in Colorado and at tat time I learned in Ecology class, geothermal power plants were illegal because, " they are unfair competion for conventional power plants".
Conventional power plants were; coal, natural gas, petrolium, powered plants.
Have the laws changed?

How to prove geothermal power plant does not violate the second law (especially in mathematic)
I know that it is a close system and it obey the internal energy conservation. But I hardly express it into mathematical to make it a stronger statement. Anyone can help please. Thank You.

why don't we utilize more Geothermal power?
I know most of that is available on the west coast.
But isn't it cheaper and more constant than solar or wind?
solar you have to have expensive equipment.

where Geothermal is available, you dig a deep hole. dump in water. and have a release hole. that the steam spins a turbine.
I also read that there is enough Geothermal power on the west coast to provide 2000 times the power currently consumed by the whole US.

So why arn't people talking and using it more?