Most UK homeowners who go solar accept the first or second quote they receive. That decision costs the average homeowner £800–£1,500 on their installation — sometimes more. This guide explains why 3 quotes is the minimum, what to compare when you have them, and how to avoid the common mistakes that make quote comparison harder than it needs to be. First Check the Solar Panel Cost UK 2026
Q: How many solar quotes should I get in the UK?
You should get at least 3 solar quotes from different MCS-certified installers before committing. UK research consistently shows that solar prices for identical systems vary by 20–40% between installers. Getting 3 quotes takes 3–5 minutes via a comparison platform and can save £800–£1,500 on a typical installation. Never accept the first quote without comparison.
The UK solar installation market has no standardised pricing. Two MCS-certified installers with identical accreditations can quote £5,800 and £8,400 for the same 4kWp system on the same property. Both are legitimate quotes from qualified professionals. The difference reflects installer overhead, margin, equipment brand preference, and regional demand — not quality.
If you accept the first quote, you have no reference point. You genuinely cannot know whether you’ve paid a fair price. The homeowner who got three quotes and chose the middle option spent £1,200 less than the homeowner who accepted the first one — and both have the same warranty, the same MCS certificate, and the same panels on their roof.
Three quotes hits the practical optimum between information and effort.
One quote: no reference point — you cannot assess whether it’s fair
Three is not a magic number — it’s a practical one. It gives you enough data to make an informed decision without the time cost of a full market sweep.
Price alone is the wrong comparison metric. A quote comparison should cover seven things:
What to compare
Why it Matters: The bottom line
What to Look For: All-in including scaffolding, VAT, and connection fees
What to compare
Why it Matters: Output determines savings
What to Look For: Ensure quotes are for equivalent kWp — not all installers default to the same size
What to compare
Why it Matters: Quality and warranty
What to Look For: Tier 1 manufacturers (JA Solar, LONGi, REC, Panasonic) vs unknown brands
What to compare
Why it Matters: Reliability and monitoring
What to Look For: SolarEdge, SMA, Fronius, Growatt — known vs generic
What to compare
Why it Matters: Long-term protection
What to Look For: Panel output warranty: 25 years. Inverter: 5–12 years. Workmanship: 2–5 years
What to compare
Why it Matters: Grant and SEG eligibility
What to Look For: Installer must be MCS registered. Confirm at mcscertified.com
What to compare
Why it Matters: Cash flow and risk
What to Look For: Never pay 100% upfront. Standard is deposit + on-completion
Read More – How to Compare Solar Quotes UK
Not all solar quotes are created equal. These are the warning signs that an installer may not be the right choice:
No site survey before quoting — any legitimate quote requires a physical or detailed remote survey first.
Pressure to sign within 24–48 hours — high-pressure tactics are a consumer protection red flag.
Unusually low price with no itemised breakdown — low prices sometimes mean cheaper panels, unlisted equipment, or missing scaffold costs that appear later
Cannot confirm MCS registration number — every MCS installer has a verifiable registration. Check at mcscertified.com
No workmanship warranty — reputable installers offer at least 2 years on their workmanship separate from panel and inverter warranties
Asking for full payment upfront — industry standard is a deposit (typically 10–25%) with the remainder on completion
What should I look for when comparing solar quotes?
When comparing solar quotes, look beyond the total price. Check that each quote specifies the same system size (kWp), panel and inverter brands, warranty terms, and whether MCS registration is confirmed. A quote that is £1,000 cheaper but uses unbranded panels with a 10-year warranty instead of a 25-year Tier 1 panel warranty is not necessarily better value over a 25-year period.
There is no time pressure to accept a solar quote. Unlike energy tariffs or some financial products, solar quotes do not expire overnight. Most installers will hold a quote for 30–60 days without change.
The one exception is government grant availability — if you’re applying for ECO4 or a local authority grant, there may be application deadlines or funding pot limits. In those cases, getting quotes quickly and deciding promptly is sensible.
Yes — and you should. Having 3 quotes gives you negotiating leverage without playing games. If you prefer one installer but another has quoted £600 less for an equivalent system, it’s entirely reasonable to go back to your preferred installer and ask if they can match or improve on the competing quote.
Most installers have some margin flexibility — particularly for installations that are straightforward or during quieter periods. The worst they can say is no, and you still have two other quotes to fall back on.
Yes. Solar surveys and quotes are free from all legitimate UK solar installers. You should never pay for a solar quote or initial survey. If an installer charges for a quote, move on.
Using a comparison platform like SolarForYou, you submit one set of details and receive up to 3 quotes from vetted installers within 48 hours. Contacting 3 installers individually typically takes 1–2 weeks including scheduling surveys.
Not automatically. The cheapest quote should be scrutinised more carefully, not immediately accepted. Check panel and inverter brands, warranty terms, and MCS registration. A quote that is 20% cheaper but uses lower-quality panels may cost more over the system’s 25-year life. Check Solar Panel Quotes UK guide
Abhishek Raikwar
Abhishek Raikwar
Abhishek Raikwar
