Oh they absolutely do. "did you know you need to overbuild?" is well up there with "did you know the sun doesnt shine at night?"

A solar farm with a nameplate capacity of 1 GW is about 5% of the cost of a 1GW nuclear plant. The need for overbuilding pushes the price up to roughly 20% of the cost.

Adding all the necessary storage to provide peaking can push it all the way up to ~80% of the cost of a nuclear power station.

Storage is kind of a moot point anyway these days. Most grids don't even have enough nameplate capacity to supply 100% of demand for even 1 day a year. With a few exceptions every GWh produced at any time by any solar panel or turbine - is just a GWh of gas that can be burned some other day.