Commercial solar in Wales
Sunseam ranks every suitable commercial roof in Wales by solar opportunity, so installers find qualified sites and owners see what their roof is worth.
Together these roofs represent an estimated £280,235,235 in potential annual electricity savings from on-site solar. The biggest electricity bills sit under the biggest roofs, exactly the sites Sunseam surfaces first.
Why now in Wales
The economics lead: rising electricity and grid charges against a typical rooftop-solar payback of about 4–9 years mean the value is there to capture now. On top of that, the 1,918 buildings at EPC Band D–G in Waleshave a future-proofing reason too, the minimum to let is Band E today, and the government's long-term MEES target is EPC B for large non-domestic buildings (over 1,000 m²), expected ~2031. Solar cuts bills and lifts a building's rating. See the MEES & commercial EPC guide.
Areas in Wales
By building type
Frequently asked questions
How many commercial roofs are suitable for solar in Wales?
Sunseam currently ranks 6,510 large commercial roofs in Wales, with a combined rooftop-solar potential of about 1,842.5 MWp.
Which buildings in Wales face MEES pressure?
Around 1,918 of the ranked buildings in Wales sit at EPC Band D–G. The minimum to let commercial property is Band E today; the government's long-term MEES target is EPC B for large non-domestic buildings (over 1,000 m²), expected around 2031, so the biggest, lowest-rated roofs have the clearest future-proofing reason to act, on top of the bill savings.
Figures are estimates modelled using standard assumptions, indicative, not quotes.