Solar in London: generation and cost

Across the 66 places we model in London, the median is 924 kWh a year for every kWp installed — against a UK median of 908. Individual towns and councils are listed below.

The median place we model in London produces 924 kWh a year per kWp, against a UK median of 908 across all the places in our set.

Installed cost on these pages uses the region’s own mean in the official cost statistics — the full table is on cost per kW.

The largest places we model here

PlacekWh per kWpLive postcodes
Havering9474,957
Havering9475,039
Bexley9454,385
Bexley9454,404
Barking and Dagenham9422,998
Barking and Dagenham9423,066
Greenwich9405,211
Redbridge9404,564
Greenwich9405,224
Redbridge9404,614
Bromley9377,106
Bromley9377,209
Newham9344,336
Newham9344,388
Richmond upon Thames9284,298
Richmond upon Thames9284,385
Kingston upon Thames9273,489
Kingston upon Thames9273,506
Hillingdon9266,205
Hounslow9264,931

Postcode counts are a size proxy from the ONS Postcode Directory, not population.

What varies within a region

More than between regions, usually. Two houses in the same town can differ by more than the gap between London and the national median, because orientation, pitch and shading dominate — which is why every place page here ends by pointing at the calculator rather than at a headline number.

Sources

  1. PVGIS 5.3 European Commission, Joint Research Centre · Accessed 20 August 2026 One run per place at its own postcode centroid. Contains modified Joint Research Centre data.
  2. Solar photovoltaic (PV) cost data Department for Energy Security and Net Zero · Accessed 20 August 2026 · OGL v3.0

Contains public sector information licensed under the Open Government Licence v3.0.

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