UK electricity in March 2025
Day by day: how Great Britain made its electricity in March 2025.
In March 2025, gas made 31% of Britain's electricity, then wind (26%). Renewables made 39%, against 43% a year earlier; average carbon intensity 142 g/kWh.
Electricity generated each day, March 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
March 2025 in total
| Source | Electricity | Share |
|---|---|---|
| Gas | 7,740 GWh | 30.5% |
| Wind | 6,605 GWh | 26.0% |
| Imports | 4,456 GWh | 17.6% |
| Nuclear | 2,791 GWh | 11.0% |
| Solar | 1,771 GWh | 7.0% |
| Biomass | 1,217 GWh | 4.8% |
| Other | 358 GWh | 1.4% |
| Hydro | 283 GWh | 1.1% |
| Pumped storage | 143 GWh | 0.6% |
| Renewable (wind, solar, hydro, biomass) | 38.9% | |
| Low carbon (renewable plus nuclear) | 49.9% |
Standout days
- Windiest day406.8 GWh of windFri, 21 March 2025
- Highest wind share49.3%Fri, 21 March 2025
- Sunniest day91.7 GWh of solarSun, 30 March 2025
- Cleanest day65 g/kWh averageFri, 21 March 2025
- Dirtiest day226 g/kWh averageFri, 14 March 2025
Every day
| Day | Total | Wind | Gas | Nuclear | Solar | Carbon |
|---|---|---|---|---|---|---|
| Sat 1 Mar | 812 GWh | 15% | 32% | 12% | 8% | 157 g |
| Sun 2 Mar | 789 GWh | 25% | 22% | 13% | 8% | 122 g |
| Mon 3 Mar | 882 GWh | 23% | 32% | 11% | 7% | 151 g |
| Tue 4 Mar | 872 GWh | 34% | 25% | 12% | 8% | 125 g |
| Wed 5 Mar | 880 GWh | 43% | 19% | 11% | 7% | 96 g |
| Thu 6 Mar | 848 GWh | 39% | 18% | 12% | 7% | 92 g |
| Fri 7 Mar | 828 GWh | 26% | 34% | 11% | 4% | 147 g |
| Sat 8 Mar | 719 GWh | 29% | 20% | 12% | 9% | 105 g |
| Sun 9 Mar | 701 GWh | 14% | 33% | 12% | 9% | 158 g |
| Mon 10 Mar | 851 GWh | 32% | 35% | 10% | 3% | 157 g |
| Tue 11 Mar | 875 GWh | 32% | 35% | 10% | 5% | 145 g |
| Wed 12 Mar | 897 GWh | 28% | 39% | 10% | 5% | 169 g |
| Thu 13 Mar | 896 GWh | 15% | 46% | 10% | 5% | 207 g |
| Fri 14 Mar | 886 GWh | 9% | 50% | 10% | 5% | 226 g |
| Sat 15 Mar | 809 GWh | 14% | 33% | 11% | 7% | 165 g |
| Sun 16 Mar | 793 GWh | 15% | 32% | 11% | 6% | 161 g |
| Mon 17 Mar | 864 GWh | 20% | 37% | 10% | 3% | 176 g |
| Tue 18 Mar | 865 GWh | 26% | 27% | 10% | 10% | 131 g |
| Wed 19 Mar | 864 GWh | 6% | 47% | 10% | 8% | 215 g |
| Thu 20 Mar | 808 GWh | 13% | 38% | 11% | 10% | 182 g |
| Fri 21 Mar | 824 GWh | 49% | 11% | 11% | 5% | 65 g |
| Sat 22 Mar | 722 GWh | 32% | 22% | 12% | 5% | 105 g |
| Sun 23 Mar | 708 GWh | 20% | 32% | 12% | 3% | 150 g |
| Mon 24 Mar | 832 GWh | 19% | 41% | 11% | 8% | 179 g |
| Tue 25 Mar | 826 GWh | 22% | 37% | 11% | 5% | 166 g |
| Wed 26 Mar | 826 GWh | 20% | 37% | 11% | 9% | 168 g |
| Thu 27 Mar | 805 GWh | 41% | 20% | 11% | 7% | 96 g |
| Fri 28 Mar | 810 GWh | 45% | 17% | 10% | 8% | 77 g |
| Sat 29 Mar | 760 GWh | 45% | 13% | 11% | 9% | 71 g |
| Sun 30 Mar | 750 GWh | 45% | 14% | 11% | 12% | 72 g |
| Mon 31 Mar | 763 GWh | 11% | 38% | 12% | 11% | 176 g |