Electricity Live

Great Britain’s electricity on Wednesday 29 December 2021

On Wednesday 29 December, demand averaged 31.8 GW. Renewables supplied 41%.

31.8GW AVERAGEWind12.86 GW40%Hydro0.30 GW1%Biomass2.51 GW8%Solar0.17 GW1%Gas5.72 GW18%Coal0.07 GW0%Imports4.04 GW12%Nuclear6.80 GW21%31.8GW AVERAGE40%8%18%12%21%
Price
£150.01/MWh
Day average £150.01
Demand31.8GW
Generation 28.4Transfers 3.4
Fossil fuels18%
Renewables41%
Other41%
Carbon intensityLow
105g/kWh
0Day average 105300
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Recorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hourRecorded half-hour

Records set on this day

All records

Key moments

On Wednesday 29 December 2021, wind supplied 40% of Great Britain’s electricity and nuclear 21%. Demand peaked at 40.3 GW at 17:15. Carbon intensity averaged 105 g/kWh and the price £150.01/MWh. Wind generation peaked at 18.1 GW at 13:35. Solar generation peaked at 1.3 GW at 13:30. Carbon intensity was lowest at 23:30 (49 g/kWh) and highest at 01:00 (159 g/kWh). The wholesale price ranged from −£20.92/MWh at 23:30 to £230.87/MWh at 00:30. The price was below zero for 1 hours. Wind made 45% 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 0.170.5%Wind 12.8639.6%Gas 5.7217.6%Hydro 0.300.9%Biomass 2.517.7%Nuclear 6.8020.9%Coal 0.070.2%
Price£/MWh
Carbon intensitygCO₂/kWh
Demand and generationGW
Demand 31.8avgGeneration 28.4avgTransfers 3.4avg
The day in figurespeaks, averages, totals
Peak demand40.3GW · 17:15
Low 23.0 · 04:25Avg 31.80–60 GW
Made in Great Britain89%of demand
Generation 28.4Transfers 3.4 GW
Net imports78GWh
In
86 Out
7
Zero-carbon share71%of generation
Nuclear 24%Hydro 1%Wind 45%Solar 1%

Transfers · Wed 29 Dec

Interconnectors and storage

On Wednesday 29 December 2021, Great Britain imported 86 GWh and exported 7 GWh through its interconnectors. The most came from France (28 GWh), and the most exports went to France (4 GWh).

All interconnectors

Wed 29 Dec
Imported
86GWh
Exported
7GWh
Net in
78GWh
Average net flow
3.26GW in

Into Great BritainOut of Great Britain

Belgium

Nemo Link

Average0.70GWImporting

In 16.9 GWhOut 0.0 GWh

Denmark

Viking Link

Average0.00GWIdle

In 0.0 GWhOut 0.0 GWh

France

IFA · IFA2 · ElecLink

Average1.01GWImporting

In 28.0 GWhOut 3.7 GWh

Ireland

Moyle · East–West · Greenlink

Average0.43GWImporting

In 11.0 GWhOut 0.7 GWh

Netherlands

BritNed

Average0.51GWImporting

In 15.2 GWhOut 2.9 GWh

Norway

North Sea Link

Average0.59GWImporting

In 14.3 GWhOut 0.1 GWh

Pumped storage

Dinorwig · Cruachan · Ffestiniog · Foyers

Average0.13GWGenerating

Generated 11.5 GWhPumped 8.4 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.