This is the problem, don’t just imagine your guess is correct. Actually look at daily load cycles and solar production variability. Also imagine dynamic pricing causing demand patterns to change, and things like electric vehicle charging which could be done flexibly.

Even now peak demand and peak solar production are fairly close daily.

We’re going to enter an energy economy where production isn’t just instantaneously controlled but supply is going to be a bit more dynamic and pricing is going to reflect that. There have already been demonstrated markets where this has been efficiently handled.

For a while there will be things like occasional negative pricing, but once users figure out how to take advantage of this prices normalize and usage will better match capacity patterns and new power installations will match new demand patterns.

Intuition on what you guess will be the case is a bad way to make arguments about infrastructure. Go look up actual data.