How much did Flamanville Nuclear Power Plant cost to build?
The Flamanville Nuclear Power Plant is the EDF nuclear station on the Cotentin coast in Normandy, France, with two 1,300 MW reactors operating since 1986 and 1987 and the Flamanville 3 EPR of 1,650 MW, begun in December 2007, delayed from 2012 and connected to the grid in December 2024. The Cour des comptes report of January 2025 on the EPR sector, as relayed by the Vert news site, says the Flamanville plant will have cost 23.7 billion euros in total, against about 3.3 billion planned in 2007.
Final project cost
€23.7 billion
Approximately $25.63 billion
Cost basis: 2023
JKremonaCC BY-SA 4.0
Cost evidence
Basis of the published figure
Final project cost2023
Project record