Nuclear output in France

May 2025 May 2026 Change
Output of the month 25.5TWh 28.8TWh 12.9%
Cumulative output 155.6TWh 162.0TWh 4.1%

Nuclear output in May 2026 amounted to 28.8TWh, up by 3.2TWh vs May 2025.

Since the beginning of the year, cumulative annual output was 162.0TWh, up by 6.4TWh compared to 2025. This is due to the roll-out of the 2026 outages, as planned and to the good availability of the reactors in operation.

Evolution of cumulative nuclear output in France in May 2026 (description bellow)

Nuclear output in the United Kingdom

May 2025 May 2026 Change
Output of the month 3.1TWh 2.4TWh -23.1%
Cumulative output 14.7TWh 14.1TWh -3.9%

Nuclear output in May 2026 was 2.4 TWh, 0.7TWh down from May 2025.

Cumulative output was 14.1TWh, down by 0.6TWh vs prior year, due to higher number of unplanned outages in 2026.

Evolution of cumulative nuclear output in the United Kingdom in May 2026 (description bellow)
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