France can't even run an existing Nuclear Plants at a profit, during an energy crisis.

Who is "France"?

Do you mean the Macron's French national government?

Électricité de France S.A., commonly known as EDF, is a French multinational electric utility company, largely owned by the French state.

In which case... let me propose:

bureaucracy is the problem - not nuclear power plants (as a viable solution to a nation's energy demands); however

ideally, power production should be widely distributed (e.g., solar on roofs, portable fusion, local tesla towers, etc.)