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UK Electricity Grid Daily Report — 19 September 2026

On 19 September 2026, Britain’s electricity grid averaged 31.63 GW of grid demand, with renewables averaging 73.4% of tracked domestic generation and carbon intensity averaging 62 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.63 GW

Average grid demand for this UK day.

Peak demand 35.89 GW

Highest 15-minute grid demand period.

Avg carbon 62 gCO₂/kWh

Average carbon intensity where available.

Renewables 73.4 %

Average renewable share of tracked generation.

Average grid demandDemand
31.63 GWFull-day average from available snapshots
↓ −1.14 GW vs yesterday
Peak demand13:15
35.89 GWHighest 15-minute grid demand period
↓ −1.64 GW vs yesterday
Lowest demand04:30
27.58 GWLowest 15-minute grid demand period
↑ +0.66 GW vs yesterday
Domestic generationSupply
30.88 GWTracked UK generation sources only
↑ +0.33 GW vs yesterday
Average carbonCO₂
62 gCO₂/kWhCarbon intensity average
↓ −15 g vs yesterday
Renewable shareClean
73.4 %Wind, solar, hydro and biomass
↓ −0.2 pts vs yesterday
Clean share+ Nuclear
84.2 %Renewables plus nuclear
↓ −0.4 pts vs yesterday
Net importsFlow
-2.52 GWAverage imports minus exports
↓ −2.14 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 19 September 2026, Britain’s electricity grid averaged 31.63 GW of grid demand, with renewables averaging 73.4% of tracked domestic generation and carbon intensity averaging 62 gCO₂/kWh.

The highest demand period was 35.89 GW at 13:15, while the lowest carbon intensity period was 39 gCO₂/kWh at 13:00.

Key records for 19 September 2026

Highest wind20.92 GW02:30
Highest solar7.93 GW13:30
Highest gas6.91 GW19:30
Lowest carbon39 gCO₂/kWh13:00
Highest imports3.49 GW20:15
Highest exports5.78 GW03:00

Daily chart

Demand, generation and carbon intensity

19 September 2026

Generation mix

Wind, solar, gas and interconnector flow