Electricity Live

Great Britain’s electricity on Wednesday 20 September 2023

On Wednesday 20 September, demand averaged 29.3 GW. Renewables supplied 56%.

29.3GW AVERAGEWind16.19 GW52%Hydro0.35 GW1%Biomass0.73 GW2%Solar0.70 GW2%Gas3.97 GW13%Coal0.28 GW1%Imports3.66 GW12%Nuclear5.15 GW17%29.3GW AVERAGE52%13%12%17%
Price
£63.94/MWh
Day average £63.94
Demand29.3GW
Generation 27.4Transfers 1.9
Fossil fuels13%
Renewables56%
Other31%
Carbon intensityLow
71g/kWh
0Day average 71300
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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 Wednesday 20 September 2023, wind supplied 52% of Great Britain’s electricity and nuclear 17%. Demand peaked at 36.2 GW at 10:15. Carbon intensity averaged 71 g/kWh and the price £63.94/MWh. Wind generation peaked at 20.0 GW at 10:15. Solar generation peaked at 2.3 GW at 11:30. Carbon intensity was lowest at 08:00 (50 g/kWh) and highest at 18:30 (112 g/kWh). The wholesale price ranged from −£23.64/MWh at 05:00 to £113.88/MWh at 19:30. The price was below zero for 3 hours. Wind made 59% of the electricity generated in Great Britain, compared with 33% across 2023.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 0.702.2%Wind 16.1952.2%Gas 3.9712.8%Hydro 0.351.1%Biomass 0.732.4%Nuclear 5.1516.6%Coal 0.280.9%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.3avgGeneration 27.4avgTransfers 1.9avg
The day in figurespeaks, averages, totals
Peak demand36.2GW · 10:15
Low 20.9 · 04:05Avg 29.30–40 GW
Made in Great Britain94%of demand
Generation 27.4Transfers 1.9 GW
Net imports51GWh
In
85 Out
34
Zero-carbon share82%of generation
Nuclear 19%Hydro 1%Wind 59%Solar 3%

Transfers · Wed 20 Sept

Interconnectors and storage

On Wednesday 20 September 2023, Great Britain imported 85 GWh and exported 34 GWh through its interconnectors. The most came from France (45 GWh), and the most exports went to Ireland (13 GWh).

All interconnectors

Wed 20 Sept
Imported
85GWh
Exported
34GWh
Net in
51GWh
Average net flow
2.12GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.11GWImporting

In 10.4 GWhOut 7.8 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.33GWImporting

In 45.0 GWhOut 13.1 GWh

Ireland

Moyle · East–West · Greenlink

Average0.48GWExporting

In 1.9 GWhOut 13.5 GWh

Netherlands

BritNed

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Norway

North Sea Link

Average1.16GWImporting

In 27.9 GWhOut 0.1 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.24GWPumping

Generated 2.7 GWhPumped 8.5 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.