I think geothermal has a lot of growth potential, but like other types of renewable/green energy, it's geographically limited.

And it sees geothermal as a key part of the future electricity mix that can fill in whenever wind and solar energy wane.

Huh. Yeah, I guess these power plants can be quickly activated and deactivated, and can be used as peaking power plants. But they would also make for the perfect baseload power plants, since the heat from the ground is more or less constant, and that's really all they need when the water is in a closed loop.