UK electricity history
How Britain's electricity has been made, from the last 24 hours back to 2009.
Over the last 24 hours, gas made the most electricity (33%), then wind (23%). Renewables made 35%, and the average carbon intensity was 142 g/kWh.
Electricity generated, by source
GW
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the numbers
- Nuclear
- Gas
- Hydro
- Imports
- Biomass
- Pumped storage
- Wind
- Solar
- Other
Carbon intensity
g CO₂ per kWh
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the numbers
Totals
| Source | Electricity | Share |
|---|---|---|
| Gas | 229 GWh | 33.2% |
| Wind | 156 GWh | 22.5% |
| Nuclear | 115 GWh | 16.6% |
| Imports | 83.5 GWh | 12.1% |
| Biomass | 68.8 GWh | 10.0% |
| Other | 21.3 GWh | 3.1% |
| Hydro | 14.7 GWh | 2.1% |
| Pumped storage | 3.0 GWh | 0.4% |
| Solar | 0.2 GWh | 0.0% |
| Renewable (wind, solar, hydro, biomass) | 34.6% | |
| Low carbon (renewable plus nuclear) | 51.2% |
Year by year
About this data
Since 2009 the mix comes from NESO's historic generation mix, half-hour by half-hour, summed into days and months. The last few days come from Elexon's metered generation plus NESO's estimate of rooftop solar, in the same groupings. Day and week views use our own half-hourly log. Imports are electricity brought in through the interconnectors.
Supported by National Energy SO Open Data. Contains BMRS data © Elexon Limited copyright and database right 2026. Carbon Intensity API, CC BY 4.0.