Nuclear output in France

November 2024 November 2025 Change
Output of the month 33.0TWh 34.0TWh 3.0%
Cumulative output 325.1TWh 333.6TWh 2.6%

Nuclear output in November 2025 amounted to 34TWh, up by 1TWh vs November 2024.

Since the beginning of the year, cumulative annual output was 333.6 TWh, up by 8.5TWh compared to 2024. This is explained by the good availability of the reactors in operation, well managed  outages and still a strong modulation.

Evolution of cumulative nuclear output in France in November 2025 (description bellow)

Nuclear output in the United Kingdom

November 2024 November 2025 Change
Output of the month 2.9TWh 2.5TWh -11.4%
Cumulative output 34.3TWh 30.3TWh -11.7%

Nuclear output in November was 2.5TWh, down 0.3TWh vs November 2024.

Cumulative output was 30.3TWh, 4TWh lower than prior year. Steam valve incidents impacted the output at Hartlepool and Heysham 1 in 2024, whereas an important maintenance programme and outages occured in 2025.

Evolution of cumulative nuclear output in UK in November 2025 (description bellow)