[sofixa]

Unless it becomes viable to build enough storage under any format (be it green hydrogen, pumped hydro, batteries) that could provide enough energy to withstand each locality/groups of localities' prolonged natural disasters, yes, nuclear is still needed.

Even a very varied grid (solar, wind, offshore wind and tidal) could struggle with e.g. a big storm. E.g. last summer a big part of norther Germany was hit by a storm with very strong winds, which made solar and wind stop generating power reliably over around a week. There was the rest of Germany plus the neighbours (including France's nuclear) to compensate.. but if it coincides with something else, like France being hit with a heat wave lowering rivers' level and increasing their temperature, forcing the shutdown of nuclear reactors, things can get complicated.