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Daily UK grid report
UK Electricity Grid Daily Report — 21 August 2024

On 21 August 2024, Britain’s electricity grid averaged 30.91 GW of grid demand, with renewables averaging 65.5% of tracked domestic generation and carbon intensity averaging 60 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 30.91 GW

Average grid demand for this UK day.

Peak demand 35.40 GW

Highest 15-minute grid demand period.

Avg carbon 60 gCO₂/kWh

Average carbon intensity where available.

Renewables 65.5 %

Average renewable share of tracked generation.

Average grid demandDemand
30.91 GWFull-day average from available snapshots
↓ −0.22 GW vs yesterday
Peak demand13:00
35.40 GWHighest 15-minute grid demand period
↓ −1.48 GW vs yesterday
Lowest demand05:00
24.13 GWLowest 15-minute grid demand period
↓ −0.40 GW vs yesterday
Domestic generationSupply
28.36 GWTracked UK generation sources only
↑ +0.98 GW vs yesterday
Average carbonCO₂
60 gCO₂/kWhCarbon intensity average
↑ +9 g vs yesterday
Renewable shareClean
65.5 %Wind, solar, hydro and biomass
↓ −0.6 pts vs yesterday
Clean share+ Nuclear
85.0 %Renewables plus nuclear
↓ −1.2 pts vs yesterday
Net importsFlow
0.42 GWAverage imports minus exports
↓ −0.82 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 21 August 2024, Britain’s electricity grid averaged 30.91 GW of grid demand, with renewables averaging 65.5% of tracked domestic generation and carbon intensity averaging 60 gCO₂/kWh.

The highest demand period was 35.40 GW at 13:00, while the lowest carbon intensity period was 31 gCO₂/kWh at 11:30.

Key records for 21 August 2024

Highest wind17.02 GW17:00
Highest solar7.66 GW11:30
Highest gas6.50 GW21:00
Lowest carbon31 gCO₂/kWh11:30
Highest imports6.83 GW09:00
Highest exports6.16 GW23:45

Daily chart

Demand, generation and carbon intensity

21 August 2024

Generation mix

Wind, solar, gas and interconnector flow