UK electricity in December 2020
Day by day: how Great Britain made its electricity in December 2020.
In December 2020, gas made 37% of Britain's electricity, then wind (25%). Renewables made 34%, against 36% a year earlier; average carbon intensity 178 g/kWh.
Electricity generated each day, December 2020
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
December 2020 in total
| Source | Electricity | Share |
|---|---|---|
| Gas | 9,850 GWh | 37.3% |
| Wind | 6,489 GWh | 24.6% |
| Nuclear | 4,669 GWh | 17.7% |
| Imports | 1,947 GWh | 7.4% |
| Biomass | 1,808 GWh | 6.8% |
| Coal | 594 GWh | 2.2% |
| Hydro | 483 GWh | 1.8% |
| Solar | 247 GWh | 0.9% |
| Pumped storage | 189 GWh | 0.7% |
| Other | 145 GWh | 0.5% |
| Renewable (wind, solar, hydro, biomass) | 34.2% | |
| Low carbon (renewable plus nuclear) | 51.8% |
Standout days
- Windiest day362.6 GWh of windFri, 18 December 2020
- Highest wind share50.1%Sat, 26 December 2020
- Sunniest day16.9 GWh of solarTue, 1 December 2020
- Cleanest day74 g/kWh averageSat, 26 December 2020
- Dirtiest day266 g/kWh averageMon, 7 December 2020
Every day
| Day | Total | Wind | Gas | Nuclear | Solar | Carbon |
|---|---|---|---|---|---|---|
| Tue 1 Dec | 886 GWh | 19% | 45% | 17% | 2% | 206 g |
| Wed 2 Dec | 916 GWh | 18% | 46% | 17% | 1% | 234 g |
| Thu 3 Dec | 928 GWh | 17% | 44% | 16% | 0% | 217 g |
| Fri 4 Dec | 916 GWh | 32% | 32% | 17% | 0% | 157 g |
| Sat 5 Dec | 845 GWh | 16% | 41% | 18% | 1% | 199 g |
| Sun 6 Dec | 858 GWh | 4% | 53% | 18% | 1% | 260 g |
| Mon 7 Dec | 949 GWh | 10% | 51% | 16% | 1% | 266 g |
| Tue 8 Dec | 964 GWh | 17% | 46% | 16% | 1% | 242 g |
| Wed 9 Dec | 940 GWh | 16% | 46% | 16% | 0% | 241 g |
| Thu 10 Dec | 942 GWh | 28% | 39% | 17% | 0% | 201 g |
| Fri 11 Dec | 897 GWh | 19% | 43% | 17% | 1% | 226 g |
| Sat 12 Dec | 816 GWh | 13% | 46% | 19% | 1% | 213 g |
| Sun 13 Dec | 805 GWh | 34% | 26% | 19% | 0% | 133 g |
| Mon 14 Dec | 870 GWh | 36% | 29% | 18% | 1% | 137 g |
| Tue 15 Dec | 892 GWh | 26% | 36% | 17% | 2% | 169 g |
| Wed 16 Dec | 884 GWh | 37% | 29% | 17% | 1% | 139 g |
| Thu 17 Dec | 872 GWh | 34% | 32% | 17% | 2% | 152 g |
| Fri 18 Dec | 837 GWh | 43% | 22% | 17% | 0% | 109 g |
| Sat 19 Dec | 760 GWh | 47% | 17% | 19% | 2% | 83 g |
| Sun 20 Dec | 769 GWh | 41% | 21% | 19% | 2% | 102 g |
| Mon 21 Dec | 865 GWh | 28% | 35% | 17% | 0% | 163 g |
| Tue 22 Dec | 851 GWh | 14% | 45% | 18% | 1% | 220 g |
| Wed 23 Dec | 810 GWh | 26% | 31% | 18% | 0% | 162 g |
| Thu 24 Dec | 806 GWh | 38% | 26% | 19% | 2% | 112 g |
| Fri 25 Dec | 764 GWh | 29% | 30% | 19% | 2% | 131 g |
| Sat 26 Dec | 717 GWh | 50% | 15% | 21% | 0% | 74 g |
| Sun 27 Dec | 749 GWh | 33% | 27% | 20% | 2% | 117 g |
| Mon 28 Dec | 791 GWh | 9% | 49% | 19% | 1% | 217 g |
| Tue 29 Dec | 828 GWh | 15% | 46% | 17% | 1% | 201 g |
| Wed 30 Dec | 850 GWh | 12% | 48% | 17% | 1% | 222 g |
| Thu 31 Dec | 845 GWh | 13% | 45% | 17% | 1% | 217 g |