Electricity Live

Great Britain’s electricity on Thursday 23 September 2021

On Thursday 23 September, demand averaged 29.8 GW. Renewables supplied 42%.

29.8GW AVERAGEWind11.40 GW37%Hydro0.13 GW0%Biomass1.94 GW6%Solar1.23 GW4%Gas9.18 GW30%Coal0.10 GW0%Imports1.73 GW6%Nuclear4.85 GW16%29.8GW AVERAGE37%30%16%
Price
£139.57/MWh
Day average £139.57
Demand29.8GW
Generation 28.8Transfers 1.0
Fossil fuels30%
Renewables42%
Other28%
Carbon intensityLow
139g/kWh
0Day average 139300
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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 23 September 2021, wind supplied 37% of Great Britain’s electricity and gas 30%. Demand peaked at 35.3 GW at 13:05. Carbon intensity averaged 139 g/kWh and the price £139.57/MWh. Wind generation peaked at 15.9 GW at 08:35. Solar generation peaked at 4.4 GW at 13:00. Carbon intensity was lowest at 04:00 (64 g/kWh) and highest at 18:30 (230 g/kWh). The wholesale price ranged from £59.33/MWh at 03:30 to £229.77/MWh at 18:30. Wind made 40% of the electricity generated in Great Britain, compared with 25% across 2021.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.234.0%Wind 11.4037.3%Gas 9.1830.0%Hydro 0.130.4%Biomass 1.946.3%Nuclear 4.8515.9%Coal 0.100.3%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.8avgGeneration 28.8avgTransfers 1.0avg
The day in figurespeaks, averages, totals
Peak demand35.3GW · 13:05
Low 20.7 · 03:55Avg 29.80–40 GW
Made in Great Britain97%of demand
Generation 28.8Transfers 1.0 GW
Net imports27GWh
In
37 Out
10
Zero-carbon share61%of generation
Nuclear 17%Hydro 0%Wind 40%Solar 4%

Transfers · Thu 23 Sept

Interconnectors and storage

On Thursday 23 September 2021, Great Britain imported 37 GWh and exported 10 GWh through its interconnectors. The most came from Netherlands (15 GWh), and the most exports went to Ireland (7 GWh).

All interconnectors

Thu 23 Sept
Imported
37GWh
Exported
10GWh
Net in
27GWh
Average net flow
1.13GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average0.37GWImporting

In 11.3 GWhOut 2.4 GWh

Ireland

Moyle · East–West · Greenlink

Average0.26GWExporting

In 0.4 GWhOut 6.7 GWh

Netherlands

BritNed

Average0.59GWImporting

In 15.2 GWhOut 1.1 GWh

Norway

North Sea Link

Average0.43GWImporting

In 10.4 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.12GWPumping

Generated 4.2 GWhPumped 7.2 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.