Which is a metric having one source throughout all weather, coupled with 2018 battery storage as per the study showcased in the blog.

Not sure what the relevancy is.

Here, a modern article modeling "System LCOE". In other words, the whole grid including transmission backup and everything else. It starts by giving new built nuclear power the benefit of doubt, having it cost 40% less than Flamanville 3 and 70% less than Hinkley Point C. Since no one would ever be stupid enough to greenlight a project like that again.

https://www.sciencedirect.com/science/article/pii/S036054422...

It finds that for Denmark, a country with very low insolation and awful winters that renewables are 53% cheaper than the nuclear system.