Electricity Live

Great Britain’s electricity on Thursday 21 September 2023

On Thursday 21 September, demand averaged 28.4 GW. Renewables supplied 33%.

28.4GW AVERAGEWind7.34 GW25%Hydro0.51 GW2%Biomass1.22 GW4%Solar1.92 GW6%Gas9.34 GW31%Coal0.41 GW1%Imports3.85 GW13%Nuclear5.18 GW17%28.4GW AVERAGE25%31%13%17%
Price
£81.67/MWh
Day average £81.67
Demand28.4GW
Generation 25.9Transfers 2.5
Fossil fuels31%
Renewables33%
Other34%
Carbon intensityModerate
145g/kWh
0Day average 145300
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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 Thursday 21 September 2023, gas supplied 31% of Great Britain’s electricity and wind 25%. Demand peaked at 34.3 GW at 12:50. Carbon intensity averaged 145 g/kWh and the price £81.67/MWh. Wind generation peaked at 11.3 GW at 00:15. Solar generation peaked at 6.9 GW at 11:30. Carbon intensity was lowest at 02:30 (70 g/kWh) and highest at 18:00 (214 g/kWh). The wholesale price ranged from −£0.99/MWh at 03:30 to £151.60/MWh at 18:30. The price was below zero for 0.5 hours. Gas made 36% of the electricity generated in Great Britain, compared with 36% across 2023.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.926.5%Wind 7.3424.7%Gas 9.3431.4%Hydro 0.511.7%Biomass 1.224.1%Nuclear 5.1817.4%Coal 0.411.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 28.4avgGeneration 25.9avgTransfers 2.5avg
The day in figurespeaks, averages, totals
Peak demand34.3GW · 12:50
Low 20.0 · 03:55Avg 28.40–40 GW
Made in Great Britain91%of demand
Generation 25.9Transfers 2.5 GW
Net imports55GWh
In
87 Out
31
Zero-carbon share58%of generation
Nuclear 20%Hydro 2%Wind 28%Solar 7%

Transfers · Thu 21 Sept

Interconnectors and storage

On Thursday 21 September 2023, Great Britain imported 87 GWh and exported 31 GWh through its interconnectors. The most came from France (50 GWh), and the most exports went to Ireland (22 GWh).

All interconnectors

Thu 21 Sept
Imported
87GWh
Exported
31GWh
Net in
55GWh
Average net flow
2.30GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.23GWExporting

In 3.5 GWhOut 9.1 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.07GWImporting

In 49.6 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.93GWExporting

In 0.0 GWhOut 22.3 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average1.40GWImporting

In 33.6 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.16GWGenerating

Generated 5.8 GWhPumped 1.9 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.