Live Grid Data
Report cache
Daily UK grid report
UK Electricity Grid Daily Report — 18 September 2023

On 18 September 2023, Britain’s electricity grid averaged 29.69 GW of grid demand, with renewables averaging 61.2% of tracked domestic generation and carbon intensity averaging 66 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.69 GW

Average grid demand for this UK day.

Peak demand 35.33 GW

Highest 15-minute grid demand period.

Avg carbon 66 gCO₂/kWh

Average carbon intensity where available.

Renewables 61.2 %

Average renewable share of tracked generation.

Average grid demandDemand
29.69 GWFull-day average from available snapshots
↑ +2.81 GW vs yesterday
Peak demand14:00
35.33 GWHighest 15-minute grid demand period
↑ +2.61 GW vs yesterday
Lowest demand01:30
21.20 GWLowest 15-minute grid demand period
↑ +0.30 GW vs yesterday
Domestic generationSupply
25.90 GWTracked UK generation sources only
↑ +3.45 GW vs yesterday
Average carbonCO₂
66 gCO₂/kWhCarbon intensity average
↓ −57 g vs yesterday
Renewable shareClean
61.2 %Wind, solar, hydro and biomass
↑ +18.1 pts vs yesterday
Clean share+ Nuclear
82.0 %Renewables plus nuclear
↑ +15.2 pts vs yesterday
Net importsFlow
2.97 GWAverage imports minus exports
↓ −0.07 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 18 September 2023, Britain’s electricity grid averaged 29.69 GW of grid demand, with renewables averaging 61.2% of tracked domestic generation and carbon intensity averaging 66 gCO₂/kWh.

The highest demand period was 35.33 GW at 14:00, while the lowest carbon intensity period was 27 gCO₂/kWh at 14:30.

Key records for 18 September 2023

Highest wind17.13 GW22:30
Highest solar5.82 GW14:00
Highest gas6.24 GW06:30
Lowest carbon27 gCO₂/kWh14:30
Highest imports5.32 GW13:00
Highest exports2.63 GW23:00

Daily chart

Demand, generation and carbon intensity

18 September 2023

Generation mix

Wind, solar, gas and interconnector flow