Right here in little ol’ Boise, Idaho, the state Capitol building is heated by geothermal energy. Apparently it’s the only Capitol in the U.S. that can make that claim.
Capitol buildings are naturally heated by an abundance of hot air...:-)
Utah State prison is geothermally heated. Saves taxpayers over a million per year.
http://www.deseretnews.com/article/595077054/Prison-taps-geothermal-aquifer.html?pg=all
I have an aunt and uncle in Boise who pay a pittance for their home power needs. Their neighborhood is able to tape into the same vein that powers the state Capitol building. Basically, all they have to pay for is the piping.