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Daily UK grid report
UK Electricity Grid Daily Report — 18 March 2023

On 18 March 2023, Britain’s electricity grid averaged 29.14 GW of grid demand, with renewables averaging 38.5% of tracked domestic generation and carbon intensity averaging 158 gCO₂/kWh. Daily UK electricity demand, generation, carbon intensity, imports, exports and key records.

Avg demand 29.14 GW

Average grid demand for this UK day.

Peak demand 33.77 GW

Highest 15-minute grid demand period.

Avg carbon 158 gCO₂/kWh

Average carbon intensity where available.

Renewables 38.5 %

Average renewable share of tracked generation.

Average grid demandDemand
29.14 GWFull-day average from available snapshots
↓ −2.93 GW vs yesterday
Peak demand19:00
33.77 GWHighest 15-minute grid demand period
↓ −4.03 GW vs yesterday
Lowest demand05:30
23.04 GWLowest 15-minute grid demand period
↑ +0.17 GW vs yesterday
Domestic generationSupply
23.33 GWTracked UK generation sources only
↓ −2.67 GW vs yesterday
Average carbonCO₂
158 gCO₂/kWhCarbon intensity average
↓ −7 g vs yesterday
Renewable shareClean
38.5 %Wind, solar, hydro and biomass
↑ +0.5 pts vs yesterday
Clean share+ Nuclear
56.4 %Renewables plus nuclear
↑ +2.1 pts vs yesterday
Net importsFlow
5.68 GWAverage imports minus exports
↓ −0.28 GW vs yesterday

Daily insight

What happened on the UK electricity grid?

On 18 March 2023, Britain’s electricity grid averaged 29.14 GW of grid demand, with renewables averaging 38.5% of tracked domestic generation and carbon intensity averaging 158 gCO₂/kWh.

The highest demand period was 33.77 GW at 19:00, while the lowest carbon intensity period was 92 gCO₂/kWh at 23:30.

Key records for 18 March 2023

Highest wind8.74 GW17:00
Highest solar4.29 GW12:00
Highest gas14.50 GW18:30
Lowest carbon92 gCO₂/kWh23:30
Highest imports7.33 GW14:00
Highest exports0.98 GW08:00

Daily chart

Demand, generation and carbon intensity

18 March 2023

Generation mix

Wind, solar, gas and interconnector flow