These are old talking points. Solar plants with gigawatts of storage are being built right now, today. Costs for such large scale storage are dropping quickly and are estimated to cost half of what they do today in 2030. Nuclear proponents need to update their material with the times. They keep insisting that nuclear is "The Only Way" meanwhile, in reality, we're building renewables backed by storage at higher rates than ever before. Solar plus storage is cheaper and faster to build TODAY than nuclear has ever been.
https://electrek.co/2022/03/07/solar-and-battery-storage-mak...