[doublespanner]

Mostly the viability studies in the French reactor program.

It heaviy depends on how you set up the comparison. If you look at most current energy markets and say "how can I make money with these rules" the answer is almost always build a small amount of renewables. If you say, how should a government invest to retire coal power and achieve a low and stable energy cost, then nuclear can be viable (in some places).

[toyg]

Anything French on nuclear is simply suspicious, they have a massive interest in selling it - to then double or treble prices during construction, as seen with Hinckley C.

[shkkmo]

I've seen several studies, none that reached the conclusion you are putting forward. The closest was one that said a lower, but still high percentage nuclear power in France is optimal for reducing CO2 emissions given the nuclear infrastructure that already exists there.

Do you have any specific studies in mind I may have missed?