Electricity Live

Great Britain’s electricity on Sunday 19 September 2021

On Sunday 19 September, demand averaged 26.5 GW. Renewables supplied 17%.

26.5GW AVERAGEWind3.32 GW12%Hydro0.11 GW0%Biomass1.56 GW6%Solar1.26 GW5%Gas12.52 GW46%Coal0.43 GW2%Imports2.91 GW11%Nuclear4.82 GW18%26.5GW AVERAGE12%46%11%18%
Price
£127.73/MWh
Day average £127.73
Demand26.5GW
Generation 24.0Transfers 2.4
Fossil fuels46%
Renewables17%
Other34%
Carbon intensityHigh
223g/kWh
0Day average 223300
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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 19 September 2021, gas supplied 46% of Great Britain’s electricity and nuclear 18%. Demand peaked at 32.5 GW at 17:25. Carbon intensity averaged 223 g/kWh and the price £127.73/MWh. Wind generation peaked at 5.9 GW at 02:05. Solar generation peaked at 4.4 GW at 14:00. Carbon intensity was lowest at 02:00 (167 g/kWh) and highest at 21:00 (281 g/kWh). The wholesale price ranged from £103.91/MWh at 03:00 to £190.26/MWh at 19:00. Gas made 52% 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 1.264.7%Wind 3.3212.3%Gas 12.5246.5%Hydro 0.110.4%Biomass 1.565.8%Nuclear 4.8217.9%Coal 0.431.6%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 26.5avgGeneration 24.0avgTransfers 2.4avg
The day in figurespeaks, averages, totals
Peak demand32.5GW · 17:25
Low 19.2 · 04:20Avg 26.50–40 GW
Made in Great Britain91%of demand
Generation 24.0Transfers 2.4 GW
Net imports62GWh
In
66 Out
4
Zero-carbon share40%of generation
Nuclear 20%Hydro 0%Wind 14%Solar 5%

Transfers · Sun 19 Sept

Interconnectors and storage

On Sunday 19 September 2021, Great Britain imported 66 GWh and exported 4 GWh through its interconnectors. The most came from Netherlands (22 GWh), and the most exports went to Ireland (4 GWh).

All interconnectors

Sun 19 Sept
Imported
66GWh
Exported
4GWh
Net in
62GWh
Average net flow
2.57GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.88GWImporting

In 21.1 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average0.92GWImporting

In 22.1 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.15GWExporting

In 0.5 GWhOut 4.1 GWh

Netherlands

BritNed

Average0.92GWImporting

In 22.2 GWhOut 0.0 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.0 GWhOut 0.1 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.13GWPumping

Generated 4.0 GWhPumped 7.1 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.