Inputs for solar? Do you mean the sun? That's a new complaint I've never heard anybody state.

But agreed, advanced geothermal is likely to have a ton of deployment. It's fun to follow all the startups making great progress right now. The big thing to watch will be the degradation in heat levels over 10-20 years; depletion of heat faster than the ability of the surround rock to conduct it is the biggest threat to the technology as a whole right now. But early pilots are showing no fall in output temperature so far, so that's great.