All power projects have to look at economic viability. Every project has different needs and market dynamics. THERE IS NOT A ONE TYPE OF PROJECT WORKS FOR ALL LOCATIONS. Resources mixes vary as do the demands of the power.

I can't stress this enough solar and battery dont work everywhere and they dont provide indefinite power quality. Nor does nuclear. They all need to be resourced where appropriate.

FWIW - there aren't a lot of grids that have the resource mix you described.