Europe has 166 operating nuclear reactors based on the latest available Europe-wide figure I found. France has the most, with 56 of those reactors, while the EU as a whole depends on nuclear power for about one- quarter of its electricity.

Quick scoop

  • Europe total: 166 operating nuclear reactors.
  • Biggest fleet: France, with 56 operating reactors.
  • Context: Nuclear remains a major low-carbon power source across the EU.

Note

That Europe-wide total comes from a source that cites September 2024 data, while a newer 2026 page confirms the same general picture of nuclear’s importance in Europe but does not give a single updated reactor count in the snippet.