UK electricity history
How Britain's electricity has been made, from the last 24 hours back to 2009.
Over the last 12 months, wind made the most electricity (33%), then gas (24%). Renewables made 48%, and the average carbon intensity was 137 g/kWh.
Electricity generated, by source
GWh a day
the numbers
- Nuclear
- Gas
- Hydro
- Imports
- Biomass
- Pumped storage
- Wind
- Solar
- Other
Share of electricity, by source
the numbers
Carbon intensity
g COâ‚‚ per kWh, daily average
the numbers
Totals
| Source | Electricity | Share |
|---|---|---|
| Wind | 96.2 TWh | 32.6% |
| Gas | 70.3 TWh | 23.8% |
| Imports | 42.4 TWh | 14.4% |
| Nuclear | 33.4 TWh | 11.3% |
| Solar | 21.1 TWh | 7.2% |
| Biomass | 20.4 TWh | 6.9% |
| Other | 5,683 GWh | 1.9% |
| Hydro | 3,776 GWh | 1.3% |
| Pumped storage | 1,602 GWh | 0.5% |
| Renewable (wind, solar, hydro, biomass) | 48.0% | |
| Low carbon (renewable plus nuclear) | 59.3% |
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.