UK electricity in September 2021
Day by day: how Great Britain made its electricity in September 2021.
In September 2021, gas made 41% of Britain's electricity, then wind (18%). Renewables made 29%, against 35% a year earlier; average carbon intensity 202 g/kWh.
Electricity generated each day, September 2021
GWh a day
tap the chart for values
the numbers
- Nuclear
- Gas
- Hydro
- Imports
- Biomass
- Pumped storage
- Wind
- Solar
- Coal
- Other
Share of electricity, by source
tap the chart for values
the numbers
Carbon intensity
g CO₂ per kWh, daily average
tap the chart for values
the numbers
September 2021 in total
| Source | Electricity | Share |
|---|---|---|
| Gas | 8,863 GWh | 41.3% |
| Wind | 3,822 GWh | 17.8% |
| Nuclear | 3,508 GWh | 16.4% |
| Imports | 2,244 GWh | 10.5% |
| Biomass | 1,109 GWh | 5.2% |
| Solar | 1,068 GWh | 5.0% |
| Coal | 359 GWh | 1.7% |
| Other | 191 GWh | 0.9% |
| Pumped storage | 155 GWh | 0.7% |
| Hydro | 121 GWh | 0.6% |
| Renewable (wind, solar, hydro, biomass) | 28.5% | |
| Low carbon (renewable plus nuclear) | 44.9% |
Standout days
- Windiest day324.0 GWh of windThu, 30 September 2021
- Highest wind share42.8%Thu, 30 September 2021
- Sunniest day60.0 GWh of solarTue, 7 September 2021
- Cleanest day105 g/kWh averageMon, 27 September 2021
- Dirtiest day264 g/kWh averageWed, 15 September 2021
Every day
| Day | Total | Wind | Gas | Nuclear | Solar | Carbon |
|---|---|---|---|---|---|---|
| Wed 1 Sept | 738 GWh | 15% | 43% | 16% | 3% | 204 g |
| Thu 2 Sept | 743 GWh | 12% | 47% | 14% | 4% | 232 g |
| Fri 3 Sept | 732 GWh | 9% | 47% | 14% | 4% | 236 g |
| Sat 4 Sept | 665 GWh | 12% | 42% | 16% | 5% | 211 g |
| Sun 5 Sept | 664 GWh | 11% | 40% | 16% | 8% | 203 g |
| Mon 6 Sept | 740 GWh | 6% | 46% | 15% | 7% | 249 g |
| Tue 7 Sept | 765 GWh | 7% | 46% | 16% | 8% | 228 g |
| Wed 8 Sept | 757 GWh | 12% | 43% | 17% | 7% | 213 g |
| Thu 9 Sept | 747 GWh | 8% | 48% | 17% | 4% | 244 g |
| Fri 10 Sept | 731 GWh | 9% | 48% | 17% | 3% | 242 g |
| Sat 11 Sept | 671 GWh | 20% | 38% | 18% | 6% | 185 g |
| Sun 12 Sept | 650 GWh | 7% | 48% | 18% | 5% | 237 g |
| Mon 13 Sept | 727 GWh | 12% | 49% | 16% | 4% | 240 g |
| Tue 14 Sept | 735 GWh | 10% | 50% | 16% | 2% | 251 g |
| Wed 15 Sept | 736 GWh | 7% | 52% | 16% | 6% | 264 g |
| Thu 16 Sept | 736 GWh | 8% | 49% | 16% | 6% | 255 g |
| Fri 17 Sept | 708 GWh | 18% | 42% | 16% | 5% | 203 g |
| Sat 18 Sept | 652 GWh | 7% | 49% | 18% | 6% | 238 g |
| Sun 19 Sept | 648 GWh | 12% | 46% | 18% | 5% | 220 g |
| Mon 20 Sept | 719 GWh | 12% | 48% | 16% | 6% | 239 g |
| Tue 21 Sept | 726 GWh | 15% | 46% | 16% | 6% | 227 g |
| Wed 22 Sept | 720 GWh | 30% | 34% | 16% | 6% | 159 g |
| Thu 23 Sept | 731 GWh | 37% | 30% | 16% | 4% | 135 g |
| Fri 24 Sept | 723 GWh | 36% | 28% | 17% | 5% | 134 g |
| Sat 25 Sept | 659 GWh | 13% | 45% | 18% | 3% | 210 g |
| Sun 26 Sept | 660 GWh | 35% | 24% | 18% | 5% | 124 g |
| Mon 27 Sept | 722 GWh | 42% | 23% | 17% | 6% | 105 g |
| Tue 28 Sept | 729 GWh | 34% | 33% | 17% | 3% | 135 g |
| Wed 29 Sept | 751 GWh | 36% | 29% | 16% | 6% | 127 g |
| Thu 30 Sept | 757 GWh | 43% | 27% | 15% | 2% | 117 g |