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Average electric power of London

The electricity all homes and businesses in London used in a year, expressed as average power in gigawatts: the year's gigawatt-hours spread evenly over its hours. From the UK Department for Energy Security and Net Zero.

Latest value

3.96GW

London (the London region of England), 2024. Version 2005 to 2024 (published 18 December 2025).

Average electric power of London (gigawatts (average over the year))

1 values from 2024 to 2024.
Show as a table
Average electric power of London, every value
PeriodValue (GW)Status
20243.96final
Calculated by Environment Dashboard from Department for Energy Security and Net Zero, Subnational electricity consumption statistics, Great Britain, 2005 to 2024 (published 18 December 2025). Contains public sector information licensed under the Open Government Licence v3.0. Changes: annual electricity divided by the 8,784 hours of DESNZ's 2024 electricity year to give average power in gigawatts. Open Government Licence v3.0 (Crown copyright).

Notes on individual values

  • DESNZ's 2024 electricity year: February 2024 to January 2025 for non-half-hourly meters (almost all homes), January to December for half-hourly meters.

Where it comes from

Producer
Department for Energy Security and Net Zero (UK Government) · Subnational electricity consumption, Great Britain
Version
2005 to 2024 (published 18 December 2025)
File
https://assets.publishing.service.gov.uk/media/69426e905431f4f94d7f0b5e/Subnational_electricity_consumption_statistics_2005-2024.xlsx
Fetched
2026-10-08 (automatically), 2,103,254 bytes
Fingerprint
sha256 9d40814a23f87b2b028dd39da05b47d0e67e843473ec6ec4a8a0f93167666429ETag "69426e90-2017d6" · Last-Modified Wed, 17 Dec 2025 08:49:20 GMT
Copies
Archived copy (Wayback Machine) Our copy of the exact file
Cite the producer
Department for Energy Security and Net Zero (2025). Subnational electricity consumption statistics, Great Britain, 2005 to 2024. GOV.UK. https://www.gov.uk/government/statistics/regional-and-local-authority-electricity-consumption-statistics

What was done to it

  1. Read sheet '2024' of the workbook (sha256 9d40814a23f8…), after checking its title and its 24 column headings, and took row E12000007 'London', 'All local authorities', column 'Total consumption (GWh): All meters'. Checked the cover sheet's statements on electricity years, units and the publication date.

    Code: pipeline/src/envdash/transforms/energy/desnz_subnational.py · code sha256 adc633ec418266cb… · inputs 9d40814a23f8…

  2. Unit conversion to average power: divided London's annual gigawatt-hours by 8,784 hours (366 days), giving gigawatts (GWh / h = GW), in exact decimal arithmetic. The total mixes half-hourly meters (1 January to 31 December 2024) and the others (1 February 2024 to 31 January 2025); both spans have 8,784 hours, which was checked. The result is the constant power that would deliver the same electricity over the year, not the city's peak demand.

    Code: pipeline/src/envdash/transforms/energy/desnz_subnational.py · code sha256 adc633ec418266cb… · inputs 9d40814a23f8…

What it covers

Geography
London (the London region of England)
Basis
Metered electricity consumption of all domestic and non-domestic meters in the 33 London local authorities (the London region of England), as allocated by postcode. Average power is the annual energy divided by the hours of the year, not the city's peak demand.
Unit
gigawatts (average over the year) (GW)