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Daily UK grid report
UK Electricity Grid Daily Report — 4 April 2026

On 4 April 2026, Britain’s electricity grid averaged 31.81 GW of grid demand, with renewables averaging 63.5% of tracked domestic generation and carbon intensity averaging 109 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 31.81 GW

Average grid demand for this UK day.

Peak demand 38.77 GW

Highest 15-minute grid demand period.

Avg carbon 109 gCO₂/kWh

Average carbon intensity where available.

Renewables 63.5 %

Average renewable share of tracked generation.

Average grid demandDemand
31.81 GWFull-day average from available snapshots
↓ −1.46 GW vs yesterday
Peak demand18:00
38.77 GWHighest 15-minute grid demand period
↑ +0.99 GW vs yesterday
Lowest demand05:15
24.79 GWLowest 15-minute grid demand period
↓ −4.05 GW vs yesterday
Domestic generationSupply
27.22 GWTracked UK generation sources only
↓ −3.15 GW vs yesterday
Average carbonCO₂
109 gCO₂/kWhCarbon intensity average
↑ +45 g vs yesterday
Renewable shareClean
63.5 %Wind, solar, hydro and biomass
↓ −6.5 pts vs yesterday
Clean share+ Nuclear
82.9 %Renewables plus nuclear
↓ −3.7 pts vs yesterday
Net importsFlow
2.49 GWAverage imports minus exports
↑ +2.32 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 4 April 2026, Britain’s electricity grid averaged 31.81 GW of grid demand, with renewables averaging 63.5% of tracked domestic generation and carbon intensity averaging 109 gCO₂/kWh.

The highest demand period was 38.77 GW at 18:00, while the lowest carbon intensity period was 30 gCO₂/kWh at 14:30.

Key records for 4 April 2026

Highest wind21.71 GW18:00
Highest solar6.62 GW13:30
Highest gas5.98 GW19:30
Lowest carbon30 gCO₂/kWh14:30
Highest imports7.84 GW09:30
Highest exports5.08 GW19:00

Daily chart

Demand, generation and carbon intensity

4 April 2026

Generation mix

Wind, solar, gas and interconnector flow