Electricity Live

Great Britain’s electricity on Tuesday 21 April 2026

On Tuesday 21 April, demand averaged 30.7 GW. Renewables supplied 52%.

30.7GW AVERAGEWind12.06 GW37%Hydro0.61 GW2%Biomass2.33 GW7%Solar4.40 GW13%Gas3.43 GW11%Imports4.28 GW13%Nuclear5.51 GW17%30.7GW AVERAGE37%7%13%11%13%17%
Price
£87.35/MWh
Day average £87.35
Demand30.7GW
Generation 28.3Transfers 2.3
Fossil fuels11%
Renewables52%
Other37%
Carbon intensityLow
72g/kWh
0Day average 72300
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Recorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hour

Key moments

On Tuesday 21 April 2026, wind supplied 37% of Great Britain’s electricity and nuclear 17%. Demand peaked at 38.6 GW at 12:35. Carbon intensity averaged 72 g/kWh and the price £87.35/MWh. Wind generation peaked at 14.1 GW at 17:45. Solar generation peaked at 13.7 GW at 12:30. Carbon intensity was lowest at 15:30 (41 g/kWh) and highest at 06:00 (105 g/kWh). The wholesale price ranged from £14.28/MWh at 15:00 to £119.91/MWh at 19:00. Wind made 43% of the electricity generated in Great Britain, compared with 36% across 2026 so far.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 4.4013.5%Wind 12.0637.0%Gas 3.4310.5%Hydro 0.611.9%Biomass 2.337.1%Nuclear 5.5116.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 30.7avgGeneration 28.3avgTransfers 2.3avg
The day in figurespeaks, averages, totals
Peak demand38.6GW · 12:35
Low 22.0 · 04:40Avg 30.70–40 GW
Made in Great Britain92%of demand
Generation 28.3Transfers 2.3 GW
Net imports60GWh
In
97 Out
37
Zero-carbon share80%of generation
Nuclear 19%Hydro 2%Wind 43%Solar 16%

Transfers · Tue 21 Apr

Interconnectors and storage

On Tuesday 21 April 2026, Great Britain imported 97 GWh and exported 37 GWh through its interconnectors. The most came from France (59 GWh), and the most exports went to Denmark (13 GWh).

All interconnectors

Tue 21 Apr
Imported
97GWh
Exported
37GWh
Net in
60GWh
Average net flow
2.51GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.65GWImporting

In 16.8 GWhOut 1.1 GWh

Denmark

Viking Link

Average0.31GWExporting

In 5.5 GWhOut 13.0 GWh

France

IFA · IFA2 · ElecLink

Average2.44GWImporting

In 58.6 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.48GWExporting

In 0.3 GWhOut 11.8 GWh

Netherlands

BritNed

Average0.49GWImporting

In 13.3 GWhOut 1.5 GWh

Norway

North Sea Link

Average0.29GWExporting

In 2.6 GWhOut 9.5 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.18GWPumping

Generated 5.7 GWhPumped 9.9 GWh

All cards share one scale, so you can compare their heights. Each country can have more than one cable.

Download the 5-minute data for this day: CSV · JSON. See what the figures mean.