The Flamanville EPR reactor in north-western France has reached full nuclear power for the first time, state utility EDF announced on Sunday, describing it as “a major milestone” for the long-delayed and over-budget project.
“14 December 2025 marks a key step: the Flamanville 3 reactor reached 100% nuclear power at 11:37am and generated 1,669 MW of gross electrical power,” EDF said in a statement, a few days after receiving clearance from the Nuclear Safety and Radiation Protection Authority (ASNR).