The new potential of geothermal comes from the fact that you don't have to drill very deep anymore. Instead of water, it uses fluids with a lower boiling point.

The new potential of geothermal comes from the fact that you don't have to drill very deep anymore. Instead of water, it uses fluids with a lower boiling point. In some places, like Boulder, Colorado, you can even install geothermal in your own backyard and use it to heat your house. It's actually a common solution there.