Electricity Live

Great Britain’s electricity on Tuesday 14 September 2021

On Tuesday 14 September, demand averaged 29.8 GW. Renewables supplied 13%.

29.8GW AVERAGEWind3.16 GW10%Hydro0.17 GW1%Biomass0.99 GW3%Solar0.63 GW2%Gas15.32 GW51%Coal1.03 GW3%Imports4.13 GW14%Nuclear4.86 GW16%29.8GW AVERAGE10%51%14%16%
Price
£328.12/MWh
Day average £328.12
Demand29.8GW
Generation 26.1Transfers 3.6
Fossil fuels51%
Renewables13%
Other33%
Carbon intensityHigh
255g/kWh
0Day average 255300
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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 Tuesday 14 September 2021, gas supplied 51% of Great Britain’s electricity and nuclear 16%. Demand peaked at 35.6 GW at 17:25. Carbon intensity averaged 255 g/kWh and the price £328.12/MWh. Wind generation peaked at 4.1 GW at 04:05. Solar generation peaked at 2.0 GW at 13:30. Carbon intensity was lowest at 03:00 (206 g/kWh) and highest at 21:00 (283 g/kWh). The wholesale price ranged from £100.96/MWh at 04:30 to £914.77/MWh at 17:00. Gas made 59% 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 0.632.1%Wind 3.1610.4%Gas 15.3250.6%Hydro 0.170.5%Biomass 0.993.3%Nuclear 4.8616.0%Coal 1.033.4%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.8avgGeneration 26.1avgTransfers 3.6avg
The day in figurespeaks, averages, totals
Peak demand35.6GW · 17:25
Low 20.9 · 04:00Avg 29.80–40 GW
Made in Great Britain88%of demand
Generation 26.1Transfers 3.6 GW
Net imports86GWh
In
91 Out
4
Zero-carbon share34%of generation
Nuclear 19%Hydro 1%Wind 12%Solar 2%

Transfers · Tue 14 Sept

Interconnectors and storage

On Tuesday 14 September 2021, Great Britain imported 91 GWh and exported 4 GWh through its interconnectors. The most came from France (43 GWh), and the most exports went to Ireland (3 GWh).

All interconnectors

Tue 14 Sept
Imported
91GWh
Exported
4GWh
Net in
86GWh
Average net flow
3.60GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.80GWImporting

In 19.2 GWhOut 0.1 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.79GWImporting

In 43.0 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.12GWExporting

In 0.2 GWhOut 3.2 GWh

Netherlands

BritNed

Average0.72GWImporting

In 18.3 GWhOut 0.9 GWh

Norway

North Sea Link

Average0.41GWImporting

In 9.9 GWhOut 0.0 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.03GWGenerating

Generated 8.5 GWhPumped 7.8 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.