For instance, it is discussed in this press article [1] published in 2016 and available in French. It is mentioned that nuclear power costs 60€/MWh, compared to 80€/MWh for wind power. It is also mentioned quite often in the French press: I have seen it mentioned a few days ago. The source mentioned in the 2016 press article is an official report [2] published in 2014.
However, it is true that the maintenance cost increases as the power plants get older.
However, it is true that the maintenance cost increases as the power plants get older.
[1] https://www.francetvinfo.fr/replay-radio/le-vrai-du-faux/le-... (in French)
[2] https://www.ccomptes.fr/fr/publications/le-cout-de-productio... (in French)