Electricity Live

Great Britain’s electricity on Saturday 11 September 2021

On Saturday 11 September, demand averaged 27.1 GW. Renewables supplied 27%.

27.1GW AVERAGEWind5.88 GW21%Hydro0.12 GW0%Biomass1.07 GW4%Solar1.55 GW6%Gas10.64 GW38%Coal0.47 GW2%Imports3.10 GW11%Nuclear5.11 GW18%27.1GW AVERAGE21%38%11%18%
Price
£128.31/MWh
Day average £128.31
Demand27.1GW
Generation 24.8Transfers 2.3
Fossil fuels38%
Renewables27%
Other33%
Carbon intensityModerate
190g/kWh
0Day average 190300
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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 Saturday 11 September 2021, gas supplied 38% of Great Britain’s electricity and wind 21%. Demand peaked at 32.6 GW at 12:00. Carbon intensity averaged 190 g/kWh and the price £128.31/MWh. Wind generation peaked at 8.0 GW at 17:55. Solar generation peaked at 5.5 GW at 13:30. Carbon intensity was lowest at 15:00 (142 g/kWh) and highest at 20:00 (219 g/kWh). The wholesale price ranged from £103.43/MWh at 15:00 to £162.36/MWh at 19:00. Gas made 43% 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 1.555.5%Wind 5.8821.0%Gas 10.6438.1%Hydro 0.120.4%Biomass 1.073.8%Nuclear 5.1118.3%Coal 0.471.7%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 27.1avgGeneration 24.8avgTransfers 2.3avg
The day in figurespeaks, averages, totals
Peak demand32.6GW · 12:00
Low 20.4 · 04:40Avg 27.10–40 GW
Made in Great Britain92%of demand
Generation 24.8Transfers 2.3 GW
Net imports64GWh
In
74 Out
10
Zero-carbon share51%of generation
Nuclear 21%Hydro 0%Wind 24%Solar 6%

Transfers · Sat 11 Sept

Interconnectors and storage

On Saturday 11 September 2021, Great Britain imported 74 GWh and exported 10 GWh through its interconnectors. The most came from France (43 GWh), and the most exports went to Ireland (10 GWh).

All interconnectors

Sat 11 Sept
Imported
74GWh
Exported
10GWh
Net in
64GWh
Average net flow
2.66GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.67GWImporting

In 16.0 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.81GWImporting

In 43.4 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.42GWExporting

In 0.0 GWhOut 10.1 GWh

Netherlands

BritNed

Average0.61GWImporting

In 14.6 GWhOut 0.1 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.39GWPumping

Generated 0.4 GWhPumped 9.6 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.