You get more solar referrals by asking at the right moments, making referring effortless, paying a proper incentive, and stacking public reviews so every referral gets reinforced by what people find when they Google you. Most installers treat referrals as luck. They're not luck, they're a system nobody built. This guide builds it.
When is the best moment to ask for a solar referral?
There are two, and most installers miss both. The first is commissioning day, when the panels are on, the app is showing generation, and the customer is standing in the garden feeling clever. The second lands a few weeks later: the first bill that shows export payments coming in. That's the day solar stops being a purchase and becomes a story they tell people.
Ask on those two days and the request feels natural, because the customer is already delighted and probably already telling the neighbours. Ask three months later in a generic email and it feels like marketing, because it is.
Make the ask concrete and easy. Not "if you know anyone, send them our way" but "if a neighbour asks about the panels, here's a card with a link, and there's £X in it for you when they go ahead". One sentence on commissioning day, one follow-up when the export payment lands.
Should you pay for solar referrals?
Yes, and pay properly. A token gesture signals the referral isn't worth much. Against a five-figure install, a meaningful thank-you, cash, a bill credit, or a genuinely good gift, is one of the cheapest customer acquisition costs you'll ever have. Compare whatever number you're comfortable with against what a lead costs you through Google Ads or a lead provider, and remember the referred lead closes at multiples of either.
Two rules make the incentive work harder. Pay on completion, not on enquiry, so the scheme rewards real business. And tell customers the amount upfront rather than surprising them, because a known reward changes behaviour and a surprise only changes their opinion of you slightly.
How do you build the street effect?
Solar spreads house by house. Panels are the most visible home improvement there is, and one install on a street legitimises the decision for every neighbour who's been half-thinking about it. Installers who understand this work the street deliberately:
Letter drops to the immediate neighbours around a fresh install, "we've just installed on your road" with a photo of the actual house (with the customer's blessing). A board outside during the install, where local rules and the customer allow. And the simplest one: asking the customer directly which neighbours have mentioned it. There's nearly always one, and a warm introduction to a neighbour beats any letter.
The compounding is real. Three installs on one street and you're not marketing there any more, you're just the company that does that road.
How do reviews multiply referrals?
Because every referral gets checked. The neighbour who hears your name over the fence still Googles you before calling, and what they find either confirms the recommendation or quietly kills it. A referral programme sitting on top of thin reviews leaks at exactly the moment it should convert.
So stack them relentlessly. Ask for the Google review on commissioning day, the same conversation as the referral card, while the delight is real. A steady flow of recent reviews beats a big number of old ones. And spread beyond Google where it counts: Which? Trusted Traders carries weight with exactly the cautious, research-heavy homeowner who buys solar, and your MCS certification should be visible everywhere your name is, since serious buyers check for it.
Reviews are also a ranking input for the local searches that bring in fresh leads, which is a happy side effect covered properly in our guide to ranking for "solar installers near me".
What does a simple solar referral programme look like?
The whole thing fits on a page:
- The offer: £X on completion for every referred install. Printed on a card with a short link or QR code.
- The ask, moment one: commissioning day. Hand over the card, say the sentence, ask for the Google review in the same breath.
- The ask, moment two: when the first export payment lands, a short message. "Hope the export payments are looking good. If any neighbours are curious, the offer on that card stands."
- The street layer: neighbour letters around every install, with the customer's permission and photo.
- The tracking: every enquiry gets asked "how did you hear about us?", and referrers get paid promptly and thanked personally. A referrer who gets paid fast refers again.
That's it. No app, no platform, no complexity. The reason most installers don't have this isn't difficulty, it's that nobody owns it. Give it to one person and put it in the install checklist.
Frequently asked questions
What should the referral reward be?
Enough to feel like real money against a five-figure purchase. Benchmark it against your paid cost per install and it'll be obvious you can afford to be generous. Pay on completion.
Do referral schemes cheapen the brand?
Done as a bribe upfront, maybe. Done as a thank-you to delighted customers, no. The framing is gratitude, not commission.
How do I ask without being awkward?
Script one sentence and put it in the commissioning checklist. Awkwardness comes from improvising, not asking.
What if a customer refers someone outside my area?
Thank them, pay something anyway if it was a genuine effort, and pass the lead to a trusted installer in that area. Which is the beginning of a partner network, covered in our guide to getting work from trade partners.
Referrals convert best when the follow-up is instant, like every other lead source. See where your funnel leaks in the Solar Installer's AI Opportunity Report, or go back to the full guide to generating solar leads.