Nuclear output in France
June 2024 | June 2025 | Change | |
---|---|---|---|
Output of the month | 26.4TWh | 26.2TWh | -0.7% |
Cumulative output | 177.4TWh | 181.9TWh | 2.5% |
Nuclear output in June 2025 amounted to 26.2TWh, down -0.2TWh compared to the same period in 2024.
Since the beginning of the year, cumulative annual output was 181.9TWh, up by 4.5TWh compared to 2024. This is explained by the good availability of the reactors in operation, shorter than expected outages but a strong modulation in May and June and the impact of the heat wave.

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Cumulative nuclear output in France in TWh, 2024 and 2025
January
- 2025: 38.8
- 2024: 35.8
February
- 2025: 70.8
- 2024: 66.7
March
- 2025: 102.7
- 2024: 96.6
April
- 2025: 130.1
- 2024: 123.2
May
- 2025: 155.6
- 2024: 151.0
June
- 2025: 181.9
- 2024: 177.4
July
- 2025: no data
- 2024: 206.0
August
- 2025: no data
- 2024: 234.6
September
- 2025: no data
- 2024: 262.1
October
- 2025: no data
- 2024: 292.0
November
- 2025: no data
- 2024: 325.1
December
- 2025: no data
- 2024: 361.7
Nuclear output in the United Kingdom
June 2024 | June 2025 | Change | |
---|---|---|---|
Output of the month | 3.4TWh | 3.2TWh | -7.3% |
Cumulative output | 18.1TWh | 17.8TWh | -1.5% |
Nuclear output in June was 3.2TWh, down 0.2TWh vs June 2024.
Cumulative output was 17.8TWh, 0.3TWh 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.

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Cumulative nuclear output in the UK in TWh, 2024 and 2025
January
- 2025: 3.1
- 2024: 2.4
February
- 2025: 6.0
- 2024: 4.9
March
- 2025: 8.8
- 2024: 7.6
April
- 2025: 11.6
- 2024: 11.1
May
- 2025: 14.7
- 2024: 14.7
June
- 2025: 17.8
- 2024: 18.1
July
- 2025: no data
- 2024: 21.5
August
- 2025: no data
- 2024: 25.2
September
- 2025: no data
- 2024: 28.5
October
- 2025: no data
- 2024: 31.4
November
- 2025: no data
- 2024: 34.3
December
- 2025: no data
- 2024: 37.3