Why does MCS certification matter so much?
MCS certification is the independent national standard for renewable energy installers in the UK. It matters for two reasons. First, it is required for SEG eligibility — without an MCS-certified installation you cannot receive Smart Export Guarantee payments for the electricity you export to the grid, which means you lose a source of value from your system. Second, it gives you recourse if something goes wrong with the installation, because the MCS scheme includes a complaints process that certified installers are bound by. Always verify certification on the MCS register at mcscertified.com rather than taking a paper certificate at face value, because the register is the authoritative source and shows whether certification is current. Read our guide to MCS-certified solar installers in Scotland and our guide to the MCS register for how to check. We install through MCS-certified partners. Call 0141 230 0198.
What insurance should a solar installer carry?
A solar installer should carry public liability insurance of at least £2 million, and you should ask to see a current certificate before signing any contract. Insurance protects you if damage occurs during the installation — to your roof, your property, or a neighbour's property — and it is a basic indicator that the installer is running a legitimate operation. An installer who cannot or will not produce a current insurance certificate is a risk, regardless of how competitive their price might be. Read our guide to solar installer insurance for what to look for and what level of cover is appropriate. We install through MCS-certified partners. Call 0141 230 0198.
Why do I need a written quote after a site survey?
A quote given without a site survey is a guess, not a price. A proper quote follows a survey that checks roof orientation, shading from chimneys and neighbouring buildings, the structural condition of the roof timbers, and your existing electrical setup. The written quote should itemise panels, inverter, mounting system, labour, scaffolding, DNO notification, and warranties so you can compare quotes from different installers like for like. Without this level of detail, you cannot tell whether a cheaper quote is actually cheaper or simply offering less equipment, shorter warranties, or a smaller system. Use our solar installer checklist to make sure nothing is missed when comparing. We install through MCS-certified partners. Call 0141 230 0198.
What warranties should I expect?
Expect a 25-year panel performance warranty and a minimum 10-year workmanship warranty, both provided in writing. The panel performance warranty guarantees that the panels will produce at least a specified percentage of their original output after a given number of years. The workmanship warranty covers the quality of the installation itself — the wiring, mounting, and weatherproofing. Ask who honours the workmanship warranty if the installer ceases trading, because some warranties are backed by an insurance scheme and others are not, which affects whether you are protected in the long term. Read our guide to solar panel warranties in Scotland for what to check before signing. We install through MCS-certified partners. Call 0141 230 0198.
What are the red flags when choosing a solar installer?
Common red flags include door-to-door salespeople who turn up uninvited, prices that expire the same day to create artificial urgency, quotes given without a site survey, reluctance to put anything in writing, and an inability to show current MCS certification or a valid insurance certificate. If you feel pressured at any point, that is itself a warning sign — a reputable installer gives you time to think, compare, and decide. Read our guide to solar installer red flags to recognise the full range of warning signs before you commit. We install through MCS-certified partners. Call 0141 230 0198.
Should I compare multiple quotes?
Yes. Get at least two or three written quotes from MCS-certified installers and compare them using a checklist so you are comparing like for like — the same system size, the same warranty terms, and the same scope of work. Do not automatically choose the cheapest quote; choose the one that best covers quality, warranties, and accountability. A quote that is significantly cheaper than the others may be cutting corners on equipment, warranties, or insurance, and those shortcuts can cost you more over the life of the system. Interest-free credit up to £30,000, subject to status. We install through MCS-certified partners. Call 0141 230 0198.
More answers from Scottish Energy Efficiency
Last updated: 30 October 2026
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We install through MCS-certified partners across all of Scotland.