Electricity Live

Great Britain’s electricity on Tuesday 17 August 2021

On Tuesday 17 August, demand averaged 29.7 GW. Renewables supplied 36%.

29.7GW AVERAGEWind9.66 GW32%Hydro0.16 GW1%Biomass1.72 GW6%Solar1.03 GW3%Gas8.60 GW29%Coal0.31 GW1%Imports4.30 GW14%Nuclear4.15 GW14%29.7GW AVERAGE32%29%14%14%
Price
£111.73/MWh
Day average £111.73
Demand29.7GW
Generation 25.6Transfers 4.0
Fossil fuels29%
Renewables36%
Other34%
Carbon intensityModerate
143g/kWh
0Day average 143300
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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 17 August 2021, wind supplied 32% of Great Britain’s electricity and gas 29%. Demand peaked at 36.0 GW at 12:10. Carbon intensity averaged 143 g/kWh and the price £111.73/MWh. Wind generation peaked at 11.7 GW at 12:10. Solar generation peaked at 3.5 GW at 12:30. Carbon intensity was lowest at 01:30 (90 g/kWh) and highest at 21:00 (190 g/kWh). The wholesale price ranged from £73.82/MWh at 03:00 to £146.22/MWh at 19:00. Wind made 38% 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 1.033.4%Wind 9.6632.3%Gas 8.6028.7%Hydro 0.160.5%Biomass 1.725.7%Nuclear 4.1513.9%Coal 0.311.1%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 29.7avgGeneration 25.6avgTransfers 4.0avg
The day in figurespeaks, averages, totals
Peak demand36.0GW · 12:10
Low 20.7 · 03:55Avg 29.70–40 GW
Made in Great Britain86%of demand
Generation 25.6Transfers 4.0 GW
Net imports97GWh
In
99 Out
1
Zero-carbon share59%of generation
Nuclear 16%Hydro 1%Wind 38%Solar 4%

Transfers · Tue 17 Aug

Interconnectors and storage

On Tuesday 17 August 2021, Great Britain imported 99 GWh and exported 1 GWh through its interconnectors. The most came from France (59 GWh).

All interconnectors

Tue 17 Aug
Imported
99GWh
Exported
1GWh
Net in
97GWh
Average net flow
4.05GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.82GWImporting

In 19.6 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average2.45GWImporting

In 58.8 GWhOut 0.0 GWh

Ireland

Moyle · East–West · Greenlink

Average0.25GWImporting

In 6.5 GWhOut 0.5 GWh

Netherlands

BritNed

Average0.53GWImporting

In 13.5 GWhOut 0.9 GWh

Norway

North Sea Link

Average0.00GWIdle

In 0.2 GWhOut 0.1 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.02GWPumping

Generated 4.5 GWhPumped 5.1 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.