A traditional heat pump extracts heat from the air - even very cold air - and uses it to warm an interior space and then conversely pulls heat from the inside air and exports it to cool the space, a geothermal heating/cooling system. Operating on the same principals a thermal heat pump (or EGS, enhanced geothermal systems) takes an ancient concept and makes it feasible for use throughout the world. Geothermal energy is a huge potential source of power from the earth's core. Nature exhibits this...