Where do commercial solar leads actually come from? Not a bought list. The register, ranked.
The weekly-refreshed intelligence layer for commercial solar, every suitable roof in your region scored by opportunity, each with the per-site prize and why the owner should act now, on one interactive satellite map. Forwarded owner enquiries come as a bonus on top.
One region · no card required. See the market report.
Why your prospects are ready now
Commercial electricity and grid charges keep climbing, and the biggest bills sit under the biggest roofs. With typical commercial rooftop payback around 4–9 years, owners are moving to capture that value now, exactly the sites Sunseam surfaces first.
The minimum EPC rating to let is Band E today; the government's long-term target is EPC B for large non-domestic buildings (over 1,000 m², most warehouses and sheds), expected around 2031. Solar lifts a building's band, so owners de-risk ahead of it. (The old 2027 'Band C' step was dropped.)
of UK commercial rooftops have solar today, a large, largely untapped market.
of warehouse & large-shed roof across the UK, the biggest bills sit under the biggest roofs.
typical commercial rooftop-solar payback, faster the more electricity a site uses by day.
Sunseam estimates.
Your unfair advantage
Every roof scored and sorted by real solar opportunity, so you start at the top.
See every site on satellite imagery, coloured by opportunity or grid headroom.
Spot the buildings under energy-rating pressure, the owners with the strongest reason to move.
Estimated system size, annual saving, payback and 25-year value for every roof, a ready opener.
Every ranked roof re-scored weekly from the official register, with a metered-confidence data layer, never a stale export.
The subscription is the ranked roof data. On top, when a local owner asks to be matched, subscribers in the region receive that enquiry as a non-exclusive bonus.
How it works. Pick a region, work the list, win the site.
Pick your region
Subscribe to the region you work, as many as you like.
See ranked roofs
Every suitable roof scored by Solar-Fit, on a map and a full list.
Approach with confidence
Lead with the prize and a ready business case.
Stop buying lists. Start with the whole register.
Subscribe to the regions you work in. Data coverage, not territory. Start every approach with the per-site prize and a ready business case.
FAQ
How do installers find the best commercial roofs for solar?
The fastest way is to start from data, not to drive around. Sunseam ranks every suitable commercial roof in a region by a Solar-Fit score, the building's electricity bill, roof/system size, daytime load, EPC/MEES pressure and local grid headroom, so you work the highest-opportunity sites first, each with the per-site prize and a built-in pipeline to track outreach. Under 5% of UK commercial rooftops have solar today, across roughly 350 million m² of warehouse and large-shed roof, so the opportunity is large and largely untapped.
Is there a tool that ranks UK commercial roofs by solar potential?
Yes: Sunseam. It's commercial-solar roof intelligence: every suitable commercial roof in a UK region, ranked by solar opportunity and refreshed weekly, on a satellite map, with a built-in pipeline/CRM to work them. It's free for one region and the top-15 roofs; Pro (£449/month per region, ex VAT) unlocks every ranked roof plus an unlimited pipeline; All Regions (£1,999/month, ex VAT) bundles every region we cover into one price, and any region we open later is included automatically.
Where do the best commercial solar leads come from?
The best commercial solar leads aren't a bought list. They're the ranked roofs in your own region. Sunseam scores every suitable commercial roof by solar opportunity (electricity bill, roof size, daytime load, energy-rating/MEES pressure and grid headroom), so you start at the top of the list instead of cold-canvassing. And when a local owner asks to be matched with an installer, subscribers in the region receive that enquiry as a non-exclusive bonus on top. Typical commercial rooftop-solar payback is about 4–9 years.
What does the free tier include?
One region and the top-15 ranked roofs, plus you can save and work up to 10 of them in a real pipeline: stages, notes and an outreach log. Pro removes the save cap and adds the grid layer, alerts, team assignment and every ranked roof in the region.
Do you have a plan for installers working across several regions?
Yes: All Regions. It bundles every region we cover into one monthly price instead of subscribing region by region, and any region we open later is included automatically at no extra cost. It is not UK-wide. Some nations run on separate registers we have not opened yet. The pricing page shows the live list of exactly what is included today and what is not, generated from our current coverage. Your plan is shared across everyone at your company, so extra teammates never cost extra. Prices are shown excluding VAT; UK VAT is added at checkout.
Why don't I see every commercial building in my area?
By design: Sunseam lists the roofs worth your time, not every building. We include non-domestic buildings from the official Energy Performance of Buildings register (England & Wales) with a usable roof of about 1,000 m² or more, roughly a 90 kWp-plus system, the commercial-solar-viable range, refreshed weekly. We deliberately leave out what isn't a real opportunity: sites below that size floor (you can widen it any time with the system-size filter), roofs already fully covered by solar, and residential/domestic properties. So if a site you know isn't listed. It's almost always one of those, or it has no current EPC lodged on the register yet.
How is the Solar-Fit score worked out?
Every roof is scored 0–100 on how attractive it is for commercial rooftop solar. The score blends the building's electricity bill (the prize, and the biggest driver), roof and system size (kWp), likely daytime electricity use (which drives the self-consumption economics), EPC/MEES regulatory pressure (the 'why now'), and local grid headroom (an indicative area signal, not a connection offer). Every figure comes from official EPC data and is labelled metered (from the building's measured electricity) or typical (estimated for its type and size). You can re-sort and filter on any of them, size, deal value, payback, grid headroom, energy rating, so the ranked list matches how you actually qualify sites.