It is also quite possible and affordable to produce 80% taking the 30% capacity factor into account. Germany is already at 30% of all electricity being produced

It is also quite possible and affordable to produce 80% taking the 30% capacity factor into account. Germany is already at 30% of all electricity being produced by renewables. The capacity factor only tells you how many you need to build. That a nuclear power plant runs 24/7 causes also a lot of problems, because energy consumption heavily changes over the course of a day, especially at night there is little demand, and you cannot throttle a nuclear power plant quickly enough. That is why Belgium built illumination systems for all their highways, just to get rid of surplus nuclear power at night. I doubt the 95% capacity factor for nuclear plants - perhaps for freshly built stations. Nuclear appears to be very reliable, but there are actually quite a lot of issues. One is, that for technical reasons, a nuclear power plant might have to be shut down entirely with no forewarning. This happens quite regular and has to be compensated for by the grid. Currently 50% of the German power plants are down for maintenance, and about 25% of the French, which caused electricity shortages in France last winter. And nuclear plants even are sensitive to the weather, because in hot summers or dry winters there might not be enough cooling water in the rivers that support their cooling needs.