High quality solar power unit in London

Across the capital's 32 boroughs and the City of London, that means 1.7% of all households have installed solar panels. The best-performing borough is Havering, where 3.12% of homes have gone solar, just ahead of neighbouring Barking and Dagenham.

Whether you're closer to the Thames or the M25, if you're fortunate enough to live in London and you're looking to cut your electricity bills, solar panels could be the best way forward. From Hillingdon to North Ockendon, the capital gets more sunlight than most areas of the UK, which gives Londoners with solar panels a substantial advantage.

56,739 homes in London have had solar panel installations certified by the Microgeneration Certification Scheme (MCS), as of June 2025. Across the capital's 32 boroughs and the City of London, that means 1.7% of all households have installed solar panels.

Trusted Traders and provide a solar subscription option, though Sunsave is the only top-rated company that installs in London which fulfils the latter requirement.

It costs roughly £9,000 to buy and install a 3 kilowatt-peak (kWp) solar panel system in London. If you want to add a 5kWh battery to this system, you'll generally part with another £2,000, for a total cost of £11,000.

There are some solar panel grants available in London, due to the work of local councils and national government schemes. They tend to come with stringent requirements, as they're generally aimed at underprivileged households with low energy efficiency ratings – but there is one exception.