About commercialsolarpanelsinstallation.co.uk

Who we are

commercialsolarpanelsinstallation.co.uk is an independent commercial solar information and quote-matching service published by SEO Dons Ltd, a UK company with its registered office in Covent Garden, London (71-75 Shelton Street, WC2H 9JQ). We are not an installer and we do not sell hardware. Our job is to give UK businesses accurate, current numbers on commercial solar — costs, grants, tax treatment, export rates, payback — and then, when you ask for quotes, to match your enquiry with MCS-certified commercial installers who can deliver the work.

This site is the central hub of a portfolio of specialist commercial solar guides covering every major UK commercial property type — factories, warehouses, schools, hotels, hospitals, churches, farms, data centres, and SME businesses. Each guide is researched for the specific compliance, design, and procurement requirements of that property type, so the information you read here reflects how commercial projects actually get consented, financed, and built.

Why we focus on commercial

Commercial solar PV in the UK is a different discipline from domestic — different design methodology, different compliance, different commercial structure, different aftersales expectations. Most UK solar installers are generalists running domestic installs at volume; commercial work is delivered by them as an occasional side line, often with the same approach scaled up imperfectly. Everything on this site is commercial only: G99 grid connection, half-hourly meter data analysis, CDM 2015, structural sign-off, and the sector-specific compliance regimes that decide whether a project succeeds.

That focus shows in the guidance. A well-designed commercial system should generate within a few per cent of its PVSyst yield forecast; poorly-designed installs routinely underperform by 5-8%. The gap comes down to design discipline — sizing from real demand data rather than roof area, and specifying components for the site rather than the supplier's pallet. Our guides exist so you can hold any installer's proposal to that standard.

Our approach: sourced data, transparent framing, no commission bias

Three principles run through every page on this site. Sourced, dated numbers. Every rate, grant, and tax figure we publish is drawn from a named source — Ofgem, HMRC, supplier tariff pages, government scheme guidance — and reviewed on a rolling schedule. Where a figure moves (SEG export rates, the Ofgem price cap, grant windows), we date it rather than let it silently go stale.

Manufacturer and installer independence. We have no exclusive supply deals and no commission arrangement that favours one installer over another. A good commercial proposal specifies Tier-1 panels (Trina, JA, Longi, Canadian Solar) and a major commercial inverter brand (SMA, Solis, Huawei, SolarEdge, Fronius) chosen for the project's scale, roof geometry, and aftersales support requirements — and our guides explain how to check a quote does exactly that.

Honest economics. If the numbers don't work for a site — wrong demand profile, unsuitable roof, grid constraint — the right answer is not to build. Our guides say so plainly, and the FAQ answers across this site include the honest "no" where a project type rarely stacks up.

What a good 25-year warranty package looks like

Any credible commercial solar proposal should include a layered warranty stack. Use this as your checklist when comparing quotes:

• Panels: 25-year manufacturer linear performance warranty (Tier-1 panels typically retain 87% rated output at year 25, 80% at year 30) plus a 12-year manufacturer product warranty.
• Inverters: 10-12 year manufacturer warranty as standard, extendable to 20 years on most commercial brands. A replacement budget at year 12-15 should appear in any honest 25-year cost projection.
• Mounting and DC infrastructure: 20-year manufacturer warranty on K2, S-5!, RBR, and similar Tier-1 mounting systems.
• Workmanship: a 10-year insurance-backed workmanship warranty (IWA or equivalent) — this covers installation defects even if the installer ceases trading.
• Performance: an output guarantee against the PVSyst yield forecast, with remediation at the installer's cost where generation falls short for reasons not attributable to weather.

What we won't do

We won't fabricate. No fake reviews, no made-up customer logos, no fabricated case studies. Where a worked example is illustrative rather than a documented project, we label it as representative. We won't dress sales pressure up as advice — no fake countdowns, no invented deadlines; the only urgency you'll read here is real, dated policy (like the domestic 0% VAT window ending 31 March 2027). And we won't point you at an installer because it pays us more — the matching is based on capability, sector fit, and coverage.

These positions cost clicks in a market where over-promising is normal. We hold them because the businesses that use this site make six- and seven-figure capital decisions on these numbers, and being right matters more than being loud.