Unfortunately, transmission has a natural monopoly risk, unless the government owns without profit requirements. The price peak is when it is just cheaper to make second set of lines next to old one and you can still pay the investment with fewer customers and lower price.
What has happened since is that the nuclear industry essentially collapsed given the outcome of Virgil C. Summer, Vogtle, Olkiluoto, Flamanville and Hinkley Point C and can't build new plants while renewables and storage are delivering over 90% of new capacity in the US. Being the cheapest energy source in human history.
We've gone past the "throw stuff at the wall" phase, now we know what sticks and that is renewables and storage.
The places with worse sun conditions tend to have amazing wind resources. Or be such a tiny niche that caring about them is irrelevant, like the few people living in the wind kill of the arctic high north of the polar circle.
If there is just one source nearby, isn’t that another monopoly risk? The price starts to balance with high distance tranmission cost monopoly vs monopoly of nearby energy source.
If we find many small renewable sources that are cheap to build, maybe that balances it out.