Solar is nice and all - it's is cleaner than fossil fuels, but requires a bunch of inputs. Geothermal really needs to be pushed for more; after the initial investment, requires basically no inputs and has no toxic byproducts or disposal problems.
"The full technical potential of next-generation geothermal systems to generate electricity is second only to solar PV among renewable technologies and sufficient to meet global electricity demand 140-times over."
https://www.iea.org/reports/the-future-of-geothermal-energy/...
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.