Solar installers in Wales.

By the numbers

Wales sun, measured.

≈943–1,042 kWh per kWp a year, around the UK average

For every kilowatt of panels, a well-placed roof across Wales 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 Wales.

What Welsh roofs tend to be like:

• Valleys terraces. The South Wales valleys are lined with stepped terraces where roof direction changes row by row, so the check is worth doing.
• Coastal exposure. Swansea, the Gower and the north coast see wind and salt, which an installer survey factors into the fixings.
• Welsh support. Wales adds its own Nest scheme for eligible households alongside the GB-wide 0% VAT and ECO4.

Grants & support

What help is available in Wales?

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 Wales, the Welsh Government's Nest scheme supports eligible households with home-energy improvements, alongside the GB-wide schemes.

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.