Electricity Live

Great Britain’s electricity on Sunday 12 September 2021

On Sunday 12 September, demand averaged 26.3 GW. Renewables supplied 12%.

26.3GW AVERAGEWind1.88 GW7%Hydro0.11 GW0%Biomass1.07 GW4%Solar1.29 GW5%Gas13.04 GW49%Coal0.72 GW3%Imports3.88 GW14%Nuclear4.86 GW18%26.3GW AVERAGE49%14%18%
Price
£133.27/MWh
Day average £133.27
Demand26.3GW
Generation 23.0Transfers 3.3
Fossil fuels49%
Renewables12%
Other37%
Carbon intensityHigh
242g/kWh
0Day average 242300
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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 Sunday 12 September 2021, gas supplied 49% of Great Britain’s electricity and nuclear 18%. Demand peaked at 31.7 GW at 17:25. Carbon intensity averaged 242 g/kWh and the price £133.27/MWh. Wind generation peaked at 4.6 GW at 00:00. Solar generation peaked at 4.8 GW at 11:30. Carbon intensity was lowest at 01:00 (191 g/kWh) and highest at 18:30 (279 g/kWh). The wholesale price ranged from £98.21/MWh at 11:00 to £188.18/MWh at 17:30. Gas made 57% of the electricity generated in Great Britain, compared with 42% across 2021.

Charts

Generation, demand, price and carbon

Generation by sourceGW · daily average below
Solar 1.294.8%Wind 1.887.0%Gas 13.0448.6%Hydro 0.110.4%Biomass 1.074.0%Nuclear 4.8618.1%Coal 0.722.7%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.3avgGeneration 23.0avgTransfers 3.3avg
The day in figurespeaks, averages, totals
Peak demand31.7GW · 17:25
Low 19.3 · 04:55Avg 26.30–40 GW
Made in Great Britain87%of demand
Generation 23.0Transfers 3.3 GW
Net imports82GWh
In
88 Out
6
Zero-carbon share35%of generation
Nuclear 21%Hydro 0%Wind 8%Solar 6%

Transfers · Sun 12 Sept

Interconnectors and storage

On Sunday 12 September 2021, Great Britain imported 88 GWh and exported 6 GWh through its interconnectors. The most came from France (45 GWh), and the most exports went to Ireland (6 GWh).

All interconnectors

Sun 12 Sept
Imported
88GWh
Exported
6GWh
Net in
82GWh
Average net flow
3.43GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.95GWImporting

In 22.8 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.89GWImporting

In 45.4 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.19GWExporting

In 1.6 GWhOut 6.1 GWh

Netherlands

BritNed

Average0.78GWImporting

In 18.7 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.13GWPumping

Generated 4.7 GWhPumped 7.7 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.