What is the solution?

Where are the free nuclear plants?

Sizewell C = £40 billion

That’s a lot of PV solar and battery storage.

You're talking about building new, now, with very expensive nuclear and very cheap and performant solar.

Not entirely a good faith argument given the Op's sentiment about the wasted past.

Or, let me rephrase, how much fossils have been burned to date because nuclear got basically snuffed? We can probably express an answer in Celsius.

Ah, the nuclear Dolchstoßlegende. Since the mid 1980's nuclear construction basically came to a grinding halt, due to cost overruns and delays. It has never recovered and never will. Economics, not a Greenpeace conspiracy, killed new nuclear and also will kill current nuclear. It's not much to cry about that inefficient stuff gets replaced with more efficient stuff.

Trolling/Not Trolling. Imagine if we spent the money we did developing nuclear on photo voltaic and batteries instead. Because seriously we spent next to NOTHING on PV solar and batteries.