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History · 2020

GB electricity in 2020

In 2020, Great Britain generated 275.5 TWh of electricity, at an average carbon intensity of 168 gCO₂/kWh, with wind supplying 24.8% of generation.

Generation
275.5 TWh
Avg carbon
168
gCO₂/kWh
Renewable share
30.7%
wind + solar + hydro
Peak demand
46.0 GW
2020-12-08

Share of generation by fuel

Wind
24.8%
Solar
4.4%
Nuclear
17.2%
Biomass
6.5%
Hydro
1.6%
Gas
34.5%
Coal
1.6%
Imports
8.4%
Other
0.5%
Low-carbon total
54.5%

Yearly averages of NESO's half-hourly historic mix. Wind includes NESO's embedded estimate; "not tracked" means the national data didn't break that fuel out yet - not that none was generated.

Carbon extremes of 2020

Greenest half-hour
41 gCO₂/kWh
2020-05-24 12:00 UTC
Dirtiest half-hour
333 gCO₂/kWh
2020-08-27 05:30 UTC

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