Solar installers in Greater London.

By the numbers

Greater London sun, measured.

≈1,017–1,046 kWh per kWp a year, above the UK average

For every kilowatt of panels, a well-placed roof across Greater London generates roughly this much a year, with where you land in the range depending on your town, roof direction, pitch and shading. The roof check estimates it for your exact address.

Sun figures from PVGIS. How we measure.

Local context

Roofs across Greater London.

What Greater London roofs tend to be like:

• Terraces and flats. Victorian terraces and converted flats mean shared roofs and party walls are common, so a survey works out which slope is yours and what it can carry.
• Outer boroughs. Bromley, Sutton, Enfield and Romford have more semis and detached homes, which tend to be the most straightforward London installs.
• Conservation areas. Large parts of inner and central London are conservation areas where street-facing panels usually need consent. Rear slopes are often acceptable.

Grants & support

What help is available in Greater London?

Solar and battery installations across the UK are currently zero-rated for VAT until 31 March 2027 — a straight saving on the installed price for every household, with no application needed. In England, ECO4 and the Warm Homes scheme can help eligible lower-income households with energy-efficiency measures through their energy supplier or local council.

Eligibility for grant schemes depends on your income, home and circumstances, and the schemes change. We keep the current picture on one page rather than guess what you'll qualify for.