UK electricity in May 2025
Day by day: how Great Britain made its electricity in May 2025.
In May 2025, wind made 26% of Britain's electricity, then gas (20%). Renewables made 46%, against 35% a year earlier; average carbon intensity 101 g/kWh.
Electricity generated each day, May 2025
GWh a day
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the numbers
- Nuclear
- Gas
- Hydro
- Imports
- Biomass
- Pumped storage
- Wind
- Solar
- Other
Share of electricity, by source
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the numbers
Carbon intensity
g CO₂ per kWh, daily average
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the numbers
May 2025 in total
| Source | Electricity | Share |
|---|---|---|
| Wind | 5,794 GWh | 26.4% |
| Gas | 4,448 GWh | 20.3% |
| Imports | 3,607 GWh | 16.5% |
| Nuclear | 3,327 GWh | 15.2% |
| Solar | 2,667 GWh | 12.2% |
| Biomass | 1,543 GWh | 7.0% |
| Other | 353 GWh | 1.6% |
| Hydro | 123 GWh | 0.6% |
| Pumped storage | 45.2 GWh | 0.2% |
| Renewable (wind, solar, hydro, biomass) | 46.2% | |
| Low carbon (renewable plus nuclear) | 61.4% |
Standout days
- Windiest day412.7 GWh of windMon, 26 May 2025
- Highest wind share56.1%Mon, 26 May 2025
- Sunniest day111.4 GWh of solarFri, 9 May 2025
- Cleanest day43 g/kWh averageThu, 29 May 2025
- Dirtiest day180 g/kWh averageThu, 8 May 2025
Every day
| Day | Total | Wind | Gas | Nuclear | Solar | Carbon |
|---|---|---|---|---|---|---|
| Thu 1 May | 738 GWh | 16% | 32% | 10% | 13% | 154 g |
| Fri 2 May | 712 GWh | 20% | 26% | 11% | 13% | 129 g |
| Sat 3 May | 654 GWh | 34% | 13% | 12% | 13% | 68 g |
| Sun 4 May | 654 GWh | 40% | 12% | 12% | 11% | 63 g |
| Mon 5 May | 681 GWh | 27% | 17% | 12% | 11% | 87 g |
| Tue 6 May | 740 GWh | 12% | 31% | 12% | 12% | 147 g |
| Wed 7 May | 733 GWh | 10% | 38% | 12% | 11% | 173 g |
| Thu 8 May | 737 GWh | 11% | 39% | 12% | 9% | 180 g |
| Fri 9 May | 726 GWh | 12% | 29% | 12% | 15% | 145 g |
| Sat 10 May | 653 GWh | 22% | 16% | 14% | 17% | 89 g |
| Sun 11 May | 651 GWh | 28% | 13% | 14% | 15% | 72 g |
| Mon 12 May | 719 GWh | 23% | 22% | 14% | 13% | 106 g |
| Tue 13 May | 722 GWh | 19% | 22% | 16% | 15% | 110 g |
| Wed 14 May | 727 GWh | 24% | 17% | 17% | 15% | 85 g |
| Thu 15 May | 723 GWh | 27% | 21% | 17% | 10% | 97 g |
| Fri 16 May | 719 GWh | 28% | 16% | 17% | 15% | 80 g |
| Sat 17 May | 659 GWh | 27% | 17% | 19% | 15% | 83 g |
| Sun 18 May | 647 GWh | 23% | 19% | 19% | 13% | 90 g |
| Mon 19 May | 720 GWh | 15% | 29% | 18% | 12% | 138 g |
| Tue 20 May | 719 GWh | 9% | 32% | 18% | 14% | 152 g |
| Wed 21 May | 717 GWh | 21% | 23% | 18% | 12% | 117 g |
| Thu 22 May | 713 GWh | 23% | 19% | 18% | 11% | 100 g |
| Fri 23 May | 709 GWh | 17% | 22% | 17% | 14% | 115 g |
| Sat 24 May | 661 GWh | 48% | 10% | 18% | 6% | 53 g |
| Sun 25 May | 735 GWh | 54% | 10% | 16% | 13% | 52 g |
| Mon 26 May | 736 GWh | 56% | 10% | 16% | 9% | 49 g |
| Tue 27 May | 739 GWh | 41% | 17% | 16% | 5% | 81 g |
| Wed 28 May | 708 GWh | 22% | 18% | 17% | 12% | 94 g |
| Thu 29 May | 764 GWh | 51% | 6% | 15% | 9% | 43 g |
| Fri 30 May | 722 GWh | 31% | 16% | 16% | 11% | 81 g |
| Sat 31 May | 671 GWh | 30% | 15% | 18% | 13% | 86 g |