A ministerial decree published in France has confirmed the latest cost estimate of the planned Cigéo deep geologic spent nuclear fuel repository at €33.4bn ($39bn) – €37bn including taxes – of which €9.7bn is for initial construction.

National nuclear waste agency Andra, which is responsible for the Cigéo project, said amount was calculated using economic conditions of January 2025.

The €37bn represents an increase of approximately 15% compared to the previous assessment in 2016, Andra said.