Nuclear power also have calm spells. France is enduring one, with over 50% of their nuclear capacity stopped due to manteinance and other issues (https://www.nytimes.com/2022/06/19/business/a-french-nuclear...), and are expecting blackouts in the next winter if neighbors cannot provide.
Yrs, but that is planned maintainance which can be coordinated with industry and neighbouring countries. You cannot plan for when the wind stops blowing, plus the wind is likely to have stopped in neighbouring countries too. Countries which use primarily wind rely heavily on neighbours with hydroand nuclear.
Planned manteinance? Half power installed under manteinance, some of them for cooling corrosion and leaks, at the same time, in the worst moment in maybe 10 years? And fearing blackouts in six months. Worst planning ever.
As soon as storage for intermitent sources is economically competitive with gas (not nuclear, it already is), nuclear as we know it is done.
As soon as we start building more NPPs thereby training a workforce for building NPPs building costs will go down 10x and renewables as we know it is done.