How to compare solar quotes in Edinburgh

Getting multiple solar quotes is the right thing to do. But comparing them is harder than it looks — different installers may quote different panel brands, inverter types, battery capacities and warranty terms, making the bottom-line price misleading. This guide explains what to compare line by line so you can tell whether a cheaper quote is genuinely better value or just missing something the more expensive quote includes.

What should every solar quote include?

A proper quote itemises every component: panel make and model, inverter brand and type, battery specification if included, mounting system, scaffolding, electrical connections, installation labour, and warranty terms. If a quote only gives a single total price with no breakdown, ask for the itemised version. We always provide one — it is the only way to compare like for like across installers.

Panel brands and quality differences

Panels differ in efficiency, warranty length and degradation rate. Premium panels typically offer a 25-year product warranty and degrade slower, retaining more output after 25 years. Mid-range panels may have a 12 or 15-year product warranty. The quote should state the exact make and model so you can check independent test data. We install through MCS-certified partners and confirm the panel specification in writing.

Inverter types: string vs microinverter vs hybrid

A string inverter is the most common and cost-effective choice — one unit converts DC from all panels to AC. Microinverters sit behind each panel and perform better where shading affects part of the roof, but cost more. A hybrid inverter includes battery connectivity, so if you plan to add a battery, a hybrid inverter avoids a separate battery inverter. The quote should state which type and brand is included.

Why do quotes vary so much in price?

Price differences usually reflect panel quality, inverter type, battery capacity, scaffolding requirements and roof access. The cheapest quote may use lower-warranty components or omit scaffolding, bird mesh or electrical upgrades. When comparing, check whether each quote includes the same scope of work. A quote that looks cheaper may not be once you add the missing items.

Should I trust quotes based on satellite images?

No. A quote based only on a satellite image cannot account for roof structure, conservation area status, listed building constraints, shading from chimneys or trees, or electrical upgrades. A proper quote follows a physical survey of your property. If an installer gives a firm price without visiting, ask whether the price is provisional and subject to survey — most are, and the final price can differ.

What warranty and aftercare should I expect?

Look for a 25-year product warranty on panels, a 10-year warranty on inverters, and a 10-year warranty on batteries. The installation work itself should be guaranteed separately — typically 2 to 5 years. We install through MCS-certified partners and confirm all warranties in writing. MCS registration also means the installation is eligible for the Smart Export Guarantee.

Red flags when comparing quotes

Be cautious of quotes that are vague about component brands, quotes that pressure you to sign the same day, quotes with no itemised breakdown, and quotes that claim savings or payback figures without surveying your roof. Also check that the installer is MCS certified — without it you cannot claim Smart Export Guarantee payments for your exported electricity.