Nuclear output in France

April 2024 April 2025 Change
Output of the month 26.7TWh 27.1TWh 1.6%
Cumulative output 123.2TWh 130.1TWh 5.6%

Nuclear output in April 2025 amounted to 27.1TWh, up 0.4TWh compared to the same period in 2024.
Since the beginning of the year, cumulative annual output was 130.1TWh, up by 6.9TWh compared to 2024. This is explained by the good availability of the reactors in operation, shorter than expected outages.

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

Nuclear output in the United Kingdom

April 2024 April 2025 Change
Output of the month 3.6TWh 2.8TWh -21.9%
Cumulative output 11.1TWh 11.6TWh 3.6%

Nuclear output in April 2025 was 2.8TWh, down by 0.8TWh vs April 2024.
Cumulative output was 11.6TWh, up by +0.4TWh after steam valve incidents impacting the output at Hartlepool and Heysham 1 in Q1 2024 and an important maintenance programme in 2025.

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