The most pragmatic thing to do is to improve solar generation and all kinds of storage. Those can actually solve the problem. Nuclear can't be here on time (nor on budget), and everything else just won't happen.
We could have avoided a lot of problems on the last few decades if the nuclear countries decided to push for safer reactors with no proliferation problems. They didn't. They all kept going for more weapons. Now we have to live with those problems, and the nuclear economical window passed away, it does not make sense anymore.