UK energy production: nuclear electricity
UK energy production: nuclear electricity stood at 0.54 in Jul 2026, according to GOV.UK official statistics. It is one of the indicators in the Energy production and consumption table (Value · Monthly), with a complete series running from Jan 1995 to Jul 2026. The complete series with an interactive chart, free to download.
This indicator in the Energy production and consumption table
| Indicator | 07-2026 | 06-2026 | 05-2026 | 04-2026 | 03-2026 | 02-2026 | 01-2026 | 12-2025 | 11-2025 | 10-2025 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy production | |||||||||||
| Primary electricity — nuclear | 0.54 | 0.49 | 0.57 | 0.86 | 0.65 | 0.62 | 0.66 | 0.64 | 0.61 | 0.58 | |
| Primary electricity — wind, solar and hydro | 0.77 | 0.79 | 0.76 | 0.92 | 0.98 | 0.91 | 1.01 | 1.01 | 0.96 | 0.85 |
Understanding UK energy production: nuclear electricity
Heat released through nuclear fission reactions within commercial power reactors across the United Kingdom defines the primary energy input captured in this series, measured prior to its conversion into electricity. The calculation applies a standardised thermal efficiency factor to gross electricity supplied from nuclear stations to represent the original heat generated within the reactor core. Unlike fossil fuel extraction, this series does not track physical fuel tonnage removed from mines in the same manner, but rather the operational thermal output of active atomic facilities.
Monitoring these figures demands attention to scheduled reactor refuelling outages and statutory safety inspections, which can cause sudden step-changes in monthly output. Initial generation returns undergo routine validation against grid dispatch logs, resulting in occasional minor revisions. Evaluating annual trends is more informative than month-on-month analysis, given that multi-week maintenance shutdowns occur infrequently and irregularly.
Frequently asked questions
- Does this series measure the electricity produced or the heat generated?
- It measures the thermal energy released by nuclear fission, calculated using a standard conversion factor applied to generated electricity.
- How do refuelling outages impact the monthly chart?
- Scheduled maintenance and refuelling at power stations cause temporary drops in recorded thermal output.
- Are decommissioned nuclear sites included in the calculations?
- No, only operational facilities actively supplying thermal energy to the grid are counted.