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Daily UK grid report
UK Electricity Grid Daily Report — 29 September 2023

On 29 September 2023, Britain’s electricity grid averaged 30.03 GW of grid demand, with renewables averaging 57.2% of tracked domestic generation and carbon intensity averaging 102 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.03 GW

Average grid demand for this UK day.

Peak demand 36.29 GW

Highest 15-minute grid demand period.

Avg carbon 102 gCO₂/kWh

Average carbon intensity where available.

Renewables 57.2 %

Average renewable share of tracked generation.

Average grid demandDemand
30.03 GWFull-day average from available snapshots
↓ −1.11 GW vs yesterday
Peak demand11:00
36.29 GWHighest 15-minute grid demand period
↓ −1.23 GW vs yesterday
Lowest demand02:15
22.24 GWLowest 15-minute grid demand period
↓ −2.36 GW vs yesterday
Domestic generationSupply
28.42 GWTracked UK generation sources only
↓ −1.81 GW vs yesterday
Average carbonCO₂
102 gCO₂/kWhCarbon intensity average
No change vs yesterday
Renewable shareClean
57.2 %Wind, solar, hydro and biomass
↓ −1.8 pts vs yesterday
Clean share+ Nuclear
75.2 %Renewables plus nuclear
↓ −0.8 pts vs yesterday
Net importsFlow
0.04 GWAverage imports minus exports
↑ +1.36 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 29 September 2023, Britain’s electricity grid averaged 30.03 GW of grid demand, with renewables averaging 57.2% of tracked domestic generation and carbon intensity averaging 102 gCO₂/kWh.

The highest demand period was 36.29 GW at 11:00, while the lowest carbon intensity period was 52 gCO₂/kWh at 12:30.

Key records for 29 September 2023

Highest wind15.76 GW10:00
Highest solar8.24 GW13:00
Highest gas10.62 GW18:30
Lowest carbon52 gCO₂/kWh12:30
Highest imports3.96 GW08:15
Highest exports3.39 GW17:00

Daily chart

Demand, generation and carbon intensity

29 September 2023

Generation mix

Wind, solar, gas and interconnector flow