EGS goes beyond the traditional approach to geothermal energy -- which involves finding naturally occurring pockets of steam or hot water to produce electricity -- by replicating the process. EGS systems actually fracture hot rock and circulating water through it to create turbine-powering steam.
EGS companies like AltaRock Energy, Potter Drilling, as well as the Southern Methodist University Geothermal Laboratory have
been (or are the planned) recipients of the $10 million Google.org grants and investments. --Tameka Kee