Nuclear is currently damned expensive because of the ridiculous ALARA policy, nominally based on the thoroughly debunked LNT model of radiation health effects but actually a sop to the raging hordes of "No Nukes!" fanatics who believe everything Jane Fonda says. See https://jackdevanney.substack.com/p/the-two-lies-that-killed-nuclear and https://citizendium.org/wiki/Radiation_Hazards