Australia fortunately has a political neutral research organisation (CSIRO) whose job is to estimate the net cost benefit for various government programs.

Detail and detail on cost benefit analysis https://www.csiro.au/en/news/All/Articles/2024/December/Nucl...

Needless to say not at all cost effective to go nuclear at this point. There's no reason that wouldn't hold similarly in other nations since the scale of the difference in costs are so huge too.