The Cowboys Are Real: How to Actually Protect Yourself When Going Solar

Solar Cowboys: A Real, Ongoing Problem

Ask around and you'll hear it within a minute of mentioning solar panels: "just watch out for the cowboys." It's become such a stock phrase that it's almost lost its meaning — a bit of throat-clearing before the actual advice starts. Which is a shame, because the underlying problem is real, well-documented, and still catching people out in 2026.

This isn't a piece designed to scare you off going solar. The technology works, the economics for most UK homes now stack up, and the vast majority of installers do a genuinely good job. But the solar boom of the last few years has pulled in a wave of doorstep sellers, subcontracted fitters, and short-lived companies alongside the reputable trade — and knowing how to tell them apart before you sign anything is the single most useful thing you can do to protect yourself.

Why This Keeps Happening

Solar sits in an unusual spot for a home improvement: it's expensive enough that a bad decision costs thousands of pounds, technical enough that most buyers can't independently judge the quality of the work, and currently attractive enough — with government schemes, energy price rises, and battery storage all pushing demand up — that it draws in operators looking for a quick sale rather than a long-term reputation.

That combination is exactly what rogue traders look for. It's not unique to solar — the same pattern shows up in double glazing, driveways, and boiler installations — but the price tag and the technical complexity make it particularly easy to get away with here.

The Red Flags That Actually Matter

Most guides to "spotting a cowboy" list vague warning signs like "trust your gut." Here's what to actually look for.

• Pressure to sign today. A genuine quote doesn't expire in the next hour. "This price is only valid if you sign now" or "the grant ends at midnight" is a sales tactic, not a fact about how government schemes work — real scheme deadlines are set months in advance and published on gov.uk, not announced by the salesperson sitting in your living room.
• No MCS number, or one that doesn't check out. Any installer offering solar, battery storage, or a heat pump should be MCS certified. You can look up a company's certification directly on the MCS installer database in under a minute — do this before you agree to anything, not after.
• Full payment demanded upfront. Deposits are normal. Being asked to pay the entire contract value before a single panel is on your roof is not. If a consumer code member is involved, deposit protection rules cap how much can be taken and how it's protected.
• A quote with no real detail. A proper quote names the actual panel and inverter models, their warranties, the system size in kW, an estimated annual generation figure, and a completion timeline — not just a total price and a glossy brochure image.
• Reluctance to talk about the DNO application. Every grid-connected solar installation needs a formal application to your electricity network operator (a G98 or G99 application, depending on system size). If an installer brushes past this or seems unfamiliar with it, that's a genuine competence red flag, not just a paperwork gap.
• Reviews that only exist on the company's own website. Genuine installers have a track record on independent platforms — Google, Trustpilot, or similar — not just curated testimonials on their landing page.

What Changed in 2026, and What It Actually Means for You

There's a real update worth knowing about here, because a lot of advice circulating online is now out of date.

For years, MCS required installers to also belong to a consumer code — in practice, either RECC (the Renewable Energy Consumer Code) or HIES — as a condition of certification. Under MCS's redeveloped installer scheme, rolled out through 2026, that's no longer a mandatory requirement. This doesn't mean consumer protection has disappeared; it means the picture is a bit more layered than it used to be, and it's worth understanding both routes.

The practical takeaway: ask any installer, in writing, exactly which of these routes applies to your contract — MCS's own ADR process, RECC/GHDR, or HIES — before you sign. A trustworthy installer will answer this without hesitation, because they already know the answer.

Your Pre-Signature Checklist

• Look up their MCS certification number directly, rather than taking their word for it.
• Check their company registration on Companies House and confirm their VAT number if the price includes VAT.
• Ask which consumer code or ADR route applies to your contract, and get the answer in writing.
• Get at least two or three quotes, so you have a genuine basis for comparison rather than a single anchor price.
• Read the contract for the specific equipment named, the warranty terms, and the payment schedule — not just the headline price.
• Check independent reviews, not just testimonials supplied by the company itself.

And remember you have statutory cooling-off rights, too: for most contracts signed away from a trader's business premises — including in your own home — the Consumer Contracts Regulations give you a 14-day right to cancel, in addition to anything the trader itself offers.

If Something's Already Gone Wrong

Complain to the installer directly first, in writing, and give them a reasonable chance to put it right. If that doesn't resolve things:

• For an MCS-certified installer under the redeveloped scheme, escalate to MCS's complaints process, and from there to FHIO if it isn't resolved within 12 weeks or you're unhappy with the outcome.
• For a RECC member, new complaints go to Green Homes Dispute Resolution.
• For a HIES member, complaints go through HIES's own process.
• If the work was financed through a regulated credit agreement, you may also have a route to the Financial Ombudsman Service.
• For general advice at any stage, Citizens Advice and Trading Standards remain useful, independent starting points.

None of this is complicated once you know it exists — it's just not the kind of thing anyone tells you before you've already signed something.

One Honest Disclosure

We're an installer ourselves — YEERS, based in Hull — and everything above is exactly the checklist we'd want a customer to run through on us, not just on anyone else. If you're partway through your own solar or heat pump decision and want a second opinion on a quote you've already been given, that's a conversation we're happy to have even if you never book anything with us.