UK electricity in July 2021
Day by day: how Great Britain made its electricity in July 2021.
In July 2021, gas made 40% of Britain's electricity, then nuclear (15%). Renewables made 27%, against 36% a year earlier; average carbon intensity 206 g/kWh.
Electricity generated each day, July 2021
GWh a day
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the numbers
- Nuclear
- Gas
- Hydro
- Imports
- Biomass
- Pumped storage
- Wind
- Solar
- Coal
- 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
July 2021 in total
| Source | Electricity | Share |
|---|---|---|
| Gas | 8,854 GWh | 40.3% |
| Nuclear | 3,299 GWh | 15.0% |
| Imports | 3,187 GWh | 14.5% |
| Wind | 2,536 GWh | 11.5% |
| Solar | 1,630 GWh | 7.4% |
| Biomass | 1,604 GWh | 7.3% |
| Coal | 471 GWh | 2.1% |
| Other | 166 GWh | 0.8% |
| Pumped storage | 128 GWh | 0.6% |
| Hydro | 104 GWh | 0.5% |
| Renewable (wind, solar, hydro, biomass) | 26.7% | |
| Low carbon (renewable plus nuclear) | 41.7% |
Standout days
- Windiest day247.4 GWh of windThu, 29 July 2021
- Highest wind share34.8%Thu, 29 July 2021
- Sunniest day78.8 GWh of solarSat, 17 July 2021
- Cleanest day123 g/kWh averageThu, 29 July 2021
- Dirtiest day251 g/kWh averageThu, 22 July 2021
Every day
| Day | Total | Wind | Gas | Nuclear | Solar | Carbon |
|---|---|---|---|---|---|---|
| Thu 1 Jul | 739 GWh | 8% | 42% | 15% | 9% | 207 g |
| Fri 2 Jul | 721 GWh | 3% | 44% | 16% | 8% | 235 g |
| Sat 3 Jul | 662 GWh | 15% | 37% | 17% | 5% | 189 g |
| Sun 4 Jul | 651 GWh | 14% | 35% | 17% | 7% | 180 g |
| Mon 5 Jul | 729 GWh | 17% | 35% | 16% | 7% | 177 g |
| Tue 6 Jul | 730 GWh | 26% | 28% | 15% | 6% | 154 g |
| Wed 7 Jul | 737 GWh | 21% | 34% | 15% | 6% | 174 g |
| Thu 8 Jul | 726 GWh | 6% | 45% | 16% | 7% | 217 g |
| Fri 9 Jul | 727 GWh | 2% | 50% | 15% | 7% | 246 g |
| Sat 10 Jul | 661 GWh | 2% | 47% | 17% | 5% | 249 g |
| Sun 11 Jul | 640 GWh | 5% | 43% | 18% | 6% | 234 g |
| Mon 12 Jul | 714 GWh | 3% | 48% | 16% | 5% | 247 g |
| Tue 13 Jul | 729 GWh | 10% | 42% | 16% | 7% | 212 g |
| Wed 14 Jul | 738 GWh | 21% | 31% | 16% | 9% | 160 g |
| Thu 15 Jul | 736 GWh | 21% | 33% | 16% | 7% | 160 g |
| Fri 16 Jul | 722 GWh | 14% | 34% | 16% | 11% | 179 g |
| Sat 17 Jul | 672 GWh | 15% | 31% | 18% | 12% | 166 g |
| Sun 18 Jul | 653 GWh | 6% | 38% | 18% | 11% | 198 g |
| Mon 19 Jul | 754 GWh | 4% | 44% | 16% | 10% | 229 g |
| Tue 20 Jul | 770 GWh | 4% | 45% | 16% | 9% | 232 g |
| Wed 21 Jul | 771 GWh | 2% | 48% | 15% | 9% | 241 g |
| Thu 22 Jul | 761 GWh | 2% | 49% | 13% | 9% | 251 g |
| Fri 23 Jul | 733 GWh | 8% | 46% | 12% | 8% | 235 g |
| Sat 24 Jul | 661 GWh | 15% | 43% | 13% | 6% | 207 g |
| Sun 25 Jul | 643 GWh | 6% | 47% | 14% | 6% | 236 g |
| Mon 26 Jul | 717 GWh | 4% | 46% | 12% | 8% | 241 g |
| Tue 27 Jul | 724 GWh | 7% | 46% | 12% | 6% | 239 g |
| Wed 28 Jul | 702 GWh | 23% | 31% | 12% | 7% | 168 g |
| Thu 29 Jul | 711 GWh | 35% | 24% | 12% | 8% | 123 g |
| Fri 30 Jul | 702 GWh | 18% | 42% | 12% | 4% | 207 g |
| Sat 31 Jul | 646 GWh | 19% | 36% | 13% | 6% | 186 g |