Though you hit the Gore/Bush home energy debate when you try to do the search, you'll find that if you have enough money and a smart wife, you don't need long pipelines to benefit from the heat of the earth's crust. Bush's Crawford ranch uses geothermal energy (Wikipedia source). The modern home in Crawford had a lot of updates and self-sustaining features added. (And for those who wonder, Gore has been updating his antebellum mansion, short of tearing it down and starting over again).