More improtantly is actually renewables, plus batteries plus massive updates for the grid. The grid updates alone will cost 100s of billions.

With nuclear and centralized distribution you would still have to upgrade the grid for 10s of billions, just because of electric cars and electrification (and general maintance).

But renewables and batteries make this so much worse, specially once you talk about long distance renewable.

One you are talking about building solar in Greece and then talk about how nuclear is 'to expensive and slow'.

The main benefit of battery storage is that it is trivially easy to decentralize, so if anything it will save money on grid upgrades. Same with solar: no need to upgrade long-distance transmission lines when production happens right next door to consumption.