 And you don't need any dirty chemicals or a whole lot of energy to get this geothermal power out of the ground? No, you don't. What you do need to do in the case of enhanced geothermal is create a fracture system, a network of cracks within the hot portion of the rock that's usually several kilometers deep into the ground. And if you intersect two of those fracture networks, one from one horizontal well and one from another,