Live Grid Data
Report cache
Daily UK grid report
UK Electricity Grid Daily Report — 21 May 2023

On 21 May 2023, Britain’s electricity grid averaged 25.34 GW of grid demand, with renewables averaging 43.4% of tracked domestic generation and carbon intensity averaging 101 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 25.34 GW

Average grid demand for this UK day.

Peak demand 29.96 GW

Highest 15-minute grid demand period.

Avg carbon 101 gCO₂/kWh

Average carbon intensity where available.

Renewables 43.4 %

Average renewable share of tracked generation.

Average grid demandDemand
25.34 GWFull-day average from available snapshots
↓ −0.61 GW vs yesterday
Peak demand13:00
29.96 GWHighest 15-minute grid demand period
↓ −0.39 GW vs yesterday
Lowest demand05:15
18.90 GWLowest 15-minute grid demand period
↓ −1.32 GW vs yesterday
Domestic generationSupply
19.18 GWTracked UK generation sources only
↓ −0.04 GW vs yesterday
Average carbonCO₂
101 gCO₂/kWhCarbon intensity average
↓ −1 g vs yesterday
Renewable shareClean
43.4 %Wind, solar, hydro and biomass
↓ −0.8 pts vs yesterday
Clean share+ Nuclear
68.9 %Renewables plus nuclear
↑ +0.2 pts vs yesterday
Net importsFlow
5.46 GWAverage imports minus exports
↓ −0.62 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 21 May 2023, Britain’s electricity grid averaged 25.34 GW of grid demand, with renewables averaging 43.4% of tracked domestic generation and carbon intensity averaging 101 gCO₂/kWh.

The highest demand period was 29.96 GW at 13:00, while the lowest carbon intensity period was 69 gCO₂/kWh at 10:30.

Key records for 21 May 2023

Highest wind6.06 GW18:00
Highest solar9.42 GW12:30
Highest gas8.69 GW21:00
Lowest carbon69 gCO₂/kWh10:30
Highest imports7.35 GW17:15
Highest exports1.36 GW22:45

Daily chart

Demand, generation and carbon intensity

21 May 2023

Generation mix

Wind, solar, gas and interconnector flow