Over 15 years France installed 56 nuclear reactors.

https://en.wikipedia.org/wiki/Nuclear_power_in_France#Messme...

The costs were not small, but probably smaller than the costs of German Energiewende. Messmer plan needed not only money, but also capable heavy industry and consistent political support.

https://theinnovationattorney.substack.com/p/the-messmer-pla...

https://carboncredits.com/nuclear-education-how-germany-lost...

Had France have such rich coal reserves as Germany, they would probably build coal power plants instead of nuclear power plants.

Germany 39022 millions short tons

France 176 millions short tons

https://en.wikipedia.org/wiki/List_of_countries_by_coal_rese...