Solar panels in Westminster, Camden and 12 nearby areas
Figures updated 15 November 2026
A 4 kWp system facing south makes about 3,936 kWh a year here. For a gas-heated semi that saves £680 a year and pays back in 10.5 years, on Octopus Flux Import.
Output by roof direction
| 4 kWp at 35°, facing | kWh a year |
|---|---|
| South | 3,936 |
| South-east or south-west | 3,708 |
| East or west | 3,132 |
Electricity prices in London
| Price cap unit rate | 26.6p per kWh |
| Price cap standing charge | 42.9p a day |
| Outgoing Octopus export | 12.0p per kWh |
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Areas covered
Camden, City of London, Greenwich, Hackney, Hammersmith and Fulham, Islington, Kensington and Chelsea, Lambeth, Merton, Newham, Southwark, Tower Hamlets, Wandsworth, Westminster.
MCS solar zone 1 (London), electricity region London. Example: a semi using 2,673 kWh of electricity a year, roof facing south at 35° with no shade; savings at electricity prices from April 2027, when VAT is due to return. Every district listed has at least 95% of its postcodes in this zone and region. Areas from the ONS National Statistics Postcode Lookup; electricity regions supported by National Energy SO Open Data. Sources