History · 2023

GB electricity in 2023

In 2023, Great Britain generated 274.6 TWh of electricity, at an average carbon intensity of 149 gCO₂/kWh, with wind supplying 28.8% of generation.

Generation: 274.6 TWh
Avg carbon: 149; gCO₂/kWh
Renewable share: 34.9%; wind + solar + hydro
Peak demand: 44.1 GW; 2023-01-23

Share of generation by fuel

Wind: 28.8%
Solar: 4.9%
Nuclear: 13.9%
Biomass: 4.9%
Hydro: 1.2%
Gas: 31.6%
Coal: 1.0%
Imports: 12.2%
Other: 0.9%
Low-carbon total: 53.7%

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 2023

Greenest half-hour: 27 gCO₂/kWh; 2023-09-18 13:30 UTC
Dirtiest half-hour: 310 gCO₂/kWh; 2023-12-02 06:00 UTC

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