Live Grid Data
Report cache
Daily UK grid report
UK Electricity Grid Daily Report — 25 September 2023

On 25 September 2023, Britain’s electricity grid averaged 31.30 GW of grid demand, with renewables averaging 57.3% of tracked domestic generation and carbon intensity averaging 109 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.30 GW

Average grid demand for this UK day.

Peak demand 35.91 GW

Highest 15-minute grid demand period.

Avg carbon 109 gCO₂/kWh

Average carbon intensity where available.

Renewables 57.3 %

Average renewable share of tracked generation.

Average grid demandDemand
31.30 GWFull-day average from available snapshots
↑ +2.73 GW vs yesterday
Peak demand17:30
35.91 GWHighest 15-minute grid demand period
↑ +2.46 GW vs yesterday
Lowest demand04:45
25.16 GWLowest 15-minute grid demand period
↑ +1.72 GW vs yesterday
Domestic generationSupply
29.63 GWTracked UK generation sources only
↑ +2.03 GW vs yesterday
Average carbonCO₂
109 gCO₂/kWhCarbon intensity average
↑ +51 g vs yesterday
Renewable shareClean
57.3 %Wind, solar, hydro and biomass
↓ −9.4 pts vs yesterday
Clean share+ Nuclear
74.9 %Renewables plus nuclear
↓ −10.7 pts vs yesterday
Net importsFlow
-0.75 GWAverage imports minus exports
↑ +0.27 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 25 September 2023, Britain’s electricity grid averaged 31.30 GW of grid demand, with renewables averaging 57.3% of tracked domestic generation and carbon intensity averaging 109 gCO₂/kWh.

The highest demand period was 35.91 GW at 17:30, while the lowest carbon intensity period was 59 gCO₂/kWh at 00:00.

Key records for 25 September 2023

Highest wind16.90 GW00:00
Highest solar8.36 GW13:00
Highest gas14.19 GW19:30
Lowest carbon59 gCO₂/kWh00:00
Highest imports4.16 GW09:00
Highest exports5.54 GW03:30

Daily chart

Demand, generation and carbon intensity

25 September 2023

Generation mix

Wind, solar, gas and interconnector flow