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Daily UK grid report
UK Electricity Grid Daily Report — 21 June 2023

On 21 June 2023, Britain’s electricity grid averaged 29.94 GW of grid demand, with renewables averaging 30.3% of tracked domestic generation and carbon intensity averaging 213 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.94 GW

Average grid demand for this UK day.

Peak demand 35.09 GW

Highest 15-minute grid demand period.

Avg carbon 213 gCO₂/kWh

Average carbon intensity where available.

Renewables 30.3 %

Average renewable share of tracked generation.

Average grid demandDemand
29.94 GWFull-day average from available snapshots
↓ −0.02 GW vs yesterday
Peak demand14:00
35.09 GWHighest 15-minute grid demand period
↓ −0.44 GW vs yesterday
Lowest demand05:00
23.36 GWLowest 15-minute grid demand period
↑ +0.23 GW vs yesterday
Domestic generationSupply
28.16 GWTracked UK generation sources only
↑ +0.68 GW vs yesterday
Average carbonCO₂
213 gCO₂/kWhCarbon intensity average
↑ +4 g vs yesterday
Renewable shareClean
30.3 %Wind, solar, hydro and biomass
↑ +0.3 pts vs yesterday
Clean share+ Nuclear
44.9 %Renewables plus nuclear
↑ +0.1 pts vs yesterday
Net importsFlow
0.36 GWAverage imports minus exports
↓ −0.90 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 21 June 2023, Britain’s electricity grid averaged 29.94 GW of grid demand, with renewables averaging 30.3% of tracked domestic generation and carbon intensity averaging 213 gCO₂/kWh.

The highest demand period was 35.09 GW at 14:00, while the lowest carbon intensity period was 149 gCO₂/kWh at 13:30.

Key records for 21 June 2023

Highest wind7.77 GW14:00
Highest solar8.29 GW13:30
Highest gas15.84 GW21:00
Lowest carbon149 gCO₂/kWh13:30
Highest imports3.74 GW09:15
Highest exports4.00 GW04:00

Daily chart

Demand, generation and carbon intensity

21 June 2023

Generation mix

Wind, solar, gas and interconnector flow