Installer guide · 18 min read
Solar Lead Generation for Commercial Installers: The UK Guide (2026)
How UK commercial solar installers are booking exclusive, pre-qualified site surveys in 2026 — and why the "buy leads by the pound" era is over.
Updated 24 October 2026
What solar lead generation is, and the four ways to buy it
Solar lead generation is finding people or businesses likely to buy solar and turning that interest into a sales conversation with an installer. For a domestic installer the output is usually an enquiry. For a commercial installer, the only output that pays the bills is a site survey attended by the person who can sign off a five- or six-figure spend.
Lead generation for solar companies comes in four commercial models. You build it in-house, you buy leads per enquiry, you pay per qualified appointment, or you hire an agency on a monthly retainer. They differ less on price than on who does the work between "someone showed interest" and "we are stood on their roof", and who pays when that work produces nothing.
| Compared on | In-house marketing | Buying leads (pay per lead) | Pay per appointment | Agency on retainer |
|---|---|---|---|---|
| What you pay for | Salaries, data, software and ad spend | Each enquiry delivered | Each qualified, attended site meeting | A monthly fee for the agency’s time |
| Who qualifies the prospect | Your team | Your team, after delivery | The provider, before booking | Depends on the agency and the brief |
| Who carries the risk of a quiet month | You | Mostly you | The provider: bookings that miss the brief are replaced or refunded | You |
| Exclusivity | Yes, they are your own | Often shared with other installers | Should be exclusive (check; TNW’s are) | Varies |
| Best for | Installers ready to build a sales and marketing function | Teams with spare callers to work volume | Installers who want surveys in the diary and spend tied to outcomes | Brand-building with a long horizon |
For the detail on each, see our guides to pay per appointment solar leads and pay-per-lead vs retainer agencies. If you would rather keep it in-house, our guide to appointment setting for solar installers covers hiring, training and managing setters, and our guide to solar installer marketing explains what a full-service agency does that a lead supplier does not.
Why commercial solar lead generation is different
Residential solar lead generation is a volume game — cheap traffic, low intent, several installers fighting over the same enquiry. Commercial solar is the opposite. A single 300kW rooftop deal can be a six-figure contract, but the buying committee is smaller, slower and far more sceptical. That means the tactics that flood residential CRMs with "solar leads" are actively harmful in the commercial space: shared leads burn the brand, PPC forms attract tyre-kickers, and lead brokers rarely qualify for ownership, roof suitability or actual energy spend.
Most published advice on solar lead generation is written for domestic installers. Reonic's 2026 UK installer guide, citing PoweredLeads, puts bought solar leads at roughly £10 to £60 each and booked appointments from about £130 — prices for homeowner installs, and the guide does not cover commercial work. Commercial differs on almost every line:
| Domestic solar | Commercial solar | |
|---|---|---|
| Who decides | The homeowner, often at the kitchen table | An owner, MD, finance director or head of estates, sometimes a board |
| Who owns the roof | Usually the person you are speaking to | Often a landlord, so consent and lease terms come first |
| What drives the sale | Monthly bill savings and price | Daytime electricity spend, payback, cash flow and carbon targets |
| Grid connection | Typically small systems | Almost always a G99 application to the network operator |
| Sales cycle | Short; often one or two visits | Longer, with surveys, proposals and internal sign-off |
| Where leads come from | Comparison sites, forms and paid ads, often shared | Outbound, referrals, partnerships and tenders; a finite list of suitable sites |
Two of those rows decide whether a lead is real. Ownership first: the government's Solar Roadmap notes that most commercial leases place repairing obligations on tenants, and that these complex lease agreements can hold back rooftop solar. A tenant who loves the idea but has no landlord consent is not a lead yet. Grid connection second: National Grid Electricity Distribution states that generation above 16A (3.68kW) per phase must comply with Engineering Recommendation G99, which means a network operator application is part of almost every commercial sale. Solar Surveys' guide to the G99 application for commercial solar walks through the forms and timescales. Our UK commercial solar market in numbers guide covers the size of the opportunity and business energy prices.
If you install commercial solar in the UK, your goal isn't more solar leads — it's more sellable site surveys. Every tactic below is judged on that one metric.
The four channels that actually work in 2026
1. Cold outbound to qualified ICPs
Property owners with 50kW+ daytime load, MPAN visibility and a suitable roof are a finite, knowable list in any UK region. A tight ICP plus a short, specific opener (naming their sector and typical bill range) still outperforms every paid channel for booking-cost. The trick is qualifying on the call, not on a form.
2. Paid social with a VSL, not a form
Meta and LinkedIn work for commercial solar — but only when the ad drives to a video sales letter (VSL) that pre-sells the survey, not a "get a quote" form. A 4–8 minute VSL from the founder, explaining ROI, DNO constraints and payback periods, filters out the residential clicks and pulls forward serious commercial buyers. Fewer of the surveys it books are wasted than with a form-fill campaign.
3. Sellable site surveys as the offer
The single biggest lever in commercial solar lead generation is repositioning the offer from "free quote" to "paid feasibility study, refunded on install." A sellable survey filters out the merely curious, pays for itself, and turns your sales process into a consulting engagement. Close rates from a paid survey are 3–5x higher than a free quote in every dataset we've seen.
4. Pay-per-booking partnerships
The market has moved decisively away from retainers. In 2026, the installers winning biggest are the ones only paying for qualified, attended commercial surveys — no monthly fees, no shared leads, replacements if a booking doesn't fit the brief. It aligns incentives and makes CAC a variable cost instead of a fixed bet.
Every commercial solar channel: what it needs and where it fails
The four above are where we would start. Here is the wider map: what each channel needs to work, and how it usually fails.
| Channel | What it needs | Where it fails |
|---|---|---|
| Outbound calling | A sector-targeted list screened against the TPS and CTPS, callers who understand ownership, metering and roofs, and several attempts per site | Generic scripts and callers rewarded for booking anyone who says yes |
| Cold email | Verified business addresses, a specific reason to reply, a sending set-up that reaches the inbox and fast follow-up by phone | Volume blasts with “save money on energy” copy and replies nobody picks up for days |
| Named decision-makers (MDs, FDs, estates and facilities heads), a credible personal profile and steady activity | Connection-request spam; conversations that never move off the platform | |
| Paid search | Business-intent keywords, negative keywords to strip out homeowners and a landing page that qualifies | Budget soaked up by domestic searches and form fills nobody qualified |
| Paid social | An offer or VSL that pre-sells the survey, tight targeting and a quick call-back | Ads straight to a quote form, which pull in residential clicks |
| SEO and content | Pages that answer business buyers’ questions (payback, leases, grid connection) and real case studies | Slow to build, and content written for homeowners attracts homeowners |
| Referrals | Happy commercial clients, a habit of asking and neighbouring units on the same estate | Volume you cannot plan a sales team around |
| Partnerships | Energy brokers, landlords, managing agents or accountants with a clear arrangement and a reason to refer | Partners with their own agenda, slow set-up, and landlord deals stalled by tenant buy-in |
| Tenders and frameworks | Accreditations, case studies, bid-writing time and someone watching the portals | Long timelines and heavy paperwork for each bid, scored against other bidders |
Most installers end up with a mix: one or two channels that produce surveys every week, plus referrals and partnerships on top. Public sector work runs on its own rules; our guide to commercial solar tenders and frameworks explains where tenders are published and how they are scored.
How to generate solar leads yourself: six steps
If you would rather generate commercial solar leads in-house than buy them, this is the order that works. Each step has its own guide.
- Write the brief before the list. Which sectors, which system sizes, which regions, and whether you will take tenants with landlord consent or owner-occupiers only. The UK solar statistics by size band show how many installations sit in each band.
- Build the target list from public data. Companies House searches by SIC code, the non-domestic EPC register, display energy certificates for public buildings and HM Land Registry ownership data all point to businesses with big roofs and big bills. Our commercial solar prospecting guide shows how to use each one.
- Pick one or two outbound channels and run them together. The phone, with a cold calling script for commercial solar; email, with cold email that reaches the inbox; and LinkedIn lead generation for named directors and estates managers. Whatever starts the conversation, make sure every reply gets a phone call quickly: the call is where you qualify.
- Stay inside PECR. Screen numbers against the TPS and CTPS, say who is calling, and give every email an opt-out. The rules are summarised further down this page.
- Qualify on the call, then book. Ownership or landlord consent, energy spend, roof, decision-maker and a buying window, before anything goes in the diary. The questions are in how to qualify commercial solar leads.
- Book the survey with the decision-maker, then measure. Track cost per attended survey and cost per signed project every month (see the numbers to track below), and drop any channel that does not produce surveys.
Doing all six takes data, software, someone on the phones every day and time before the first survey is booked. Our in-house vs outsourced solar lead generation guide sets the two side by side. If you would rather pay only for the outcome, TNW books exclusive, qualified commercial site meetings at £250 to £1,000+VAT per booked appointment, with no retainer: pay per appointment solar leads.
What "qualified" actually means for a commercial solar lead
- Decision-maker confirmed (owner, MD, FD or head of estates)
- Property ownership verified (not tenant, or landlord consent in hand)
- Annual electricity spend above £30k, ideally £75k+
- Roof age, pitch and material suitable for a 25-year array
- Half-hourly meter or willingness to install one
- Genuine buying window in the next 3–9 months
Any "solar lead" missing three or more of the above is a residential-style enquiry wearing a commercial jacket. Reject it — or you'll spend the next quarter chasing surveys that never close. The first-call questions that test each point are in how to qualify commercial solar leads.
Benchmarks to track for commercial solar lead generation in 2026
- Cost per qualified, attended booking, not cost per enquiry
- Show rate: the share of booked surveys that actually happen (ours is 60%+)
- Survey-to-proposal and proposal-to-contract rates (see the worked example below)
- Average deal size in your own pipeline
- Payback on lead-gen spend: ideally inside the first closed deal
For what pushes cost per lead and cost per booked meeting up or down, read how much commercial solar leads cost in the UK.
The numbers to track
Cost per lead is the number lead sellers quote and the least useful one to an installer. Track these four instead, from the same spreadsheet, every month:
- Cost per attended survey: total lead generation spend divided by surveys that actually took place with the decision-maker.
- Survey-to-proposal rate: the share of attended surveys where the site was good enough to price.
- Proposal-to-contract rate: the share of proposals that become signed projects.
- Cost per signed project: spend divided by contracts signed. Compare it with your margin on an average job.
A worked example (hypothetical numbers, for illustration only): say you spend £6,000 in a quarter and it produces 10 attended surveys. Cost per attended survey is £600. Six of those sites are good enough to price, a 60% survey-to-proposal rate, and two of the six sign, a one-in-three proposal-to-contract rate. Cost per signed project is £3,000. If a cheaper source gave you surveys at £300 each but only one in ten signed, your cost per signed project would be the same £3,000 and your surveyors would have spent twice as many days on site to get there.
Use your own rates, not ours. Our solar lead calculator works backwards from the installs you want to the surveys and leads you need.
How to judge a solar lead generation company
Solar lead generation companies sell very different things under the same name. Before you sign with any of them, get straight answers to these:
- What exactly do I pay for: an enquiry, a booked meeting or an attended meeting?
- Who qualifies each prospect, when, and against which checks (ownership, energy spend, roof, decision-maker)?
- Is each lead exclusive to me, or sold to other installers too?
- What happens when a booking does not show, cancels or misses the brief?
- Is there a retainer, a minimum spend or a minimum term?
- Do you work only on commercial solar, or is this a domestic product relabelled?
- Can I speak to installers you work with now?
We compare nine UK providers on pricing model, exclusivity, qualification and contract terms in solar lead generation companies compared. If you would rather buy than build, our guide on where and how to buy solar leads in the UK sets out what to check first.
UK rules on calls and email, in brief
Business-to-business outreach is governed by PECR, and the ICO's guidance is the reference. You can make live marketing calls to a business number that is not registered with the TPS or CTPS, provided it has not objected to your calls, and you must say who is calling and display your number. The email consent rule does not apply to corporate subscribers such as limited companies and LLPs, but you must identify yourself and give a valid address to opt out. Sole traders and some partnerships are treated as individuals. Our guide to appointment setting for solar installers covers the detail; whoever does your outreach should be able to show you how they comply.
Common mistakes that kill commercial solar campaigns
- Buying shared "solar leads" from aggregators — you're the fourth call that day
- Running Meta ads straight to a Calendly link with no VSL to filter intent
- Qualifying by form instead of by human — forms lie, calls don't
- Offering free quotes instead of a paid, sellable survey
- Paying retainers to agencies with no skin in the booking outcome
- Judging suppliers on cost per lead rather than cost per signed project
How TNW Marketing does it
We run outbound and paid VSL funnels for UK commercial solar installers on a strict pay-per-booking model. Every survey is qualified against the checklist above before it lands on your calendar. If it doesn't fit the brief, it's replaced or refunded.
Our channels are outbound calling, email, LinkedIn and paid ads. Before a site meeting is booked we check property ownership or landlord consent, energy spend, roof or land suitability and buying intent, and the meeting is with the decision-maker. Every booking is exclusive to one installer. You pay per qualified, attended appointment, with no retainer and no minimum spend; bookings that cancel, don't show or don't match the agreed brief are replaced or refunded rather than charged. Our show rate is 60%+. See how installers have used it in our commercial solar installer case studies.
Watch 41 recorded client video testimonials on our reviews page, or book a call to see available commercial projects in your region.
Frequently asked questions
What is solar lead generation?▼
Solar lead generation is finding people or businesses likely to buy solar and turning their interest into a sales conversation with an installer. For a commercial installer the output that matters is not an enquiry but an attended site survey with the person who can sign off the spend.
How do I generate solar leads for my installation business?▼
For commercial work: write a brief (sectors, system sizes, regions), build a target list from public data such as Companies House, the non-domestic EPC register and HM Land Registry, reach decision-makers by phone, email and LinkedIn within the PECR rules, qualify on the call for ownership, energy spend, roof and buying window, then book a site survey with the person who signs off the spend. Track cost per attended survey and cost per signed project every month.
Is it better to generate your own solar leads or buy them?▼
Generating your own gives you exclusive prospects and full control, but it needs data, software, someone on the phones every day and time before the first survey is booked. Buying moves that work to a supplier. For commercial solar, buy attended appointments rather than enquiries, check each one is exclusive to you, and compare suppliers on cost per signed project.
Which solar lead generation channel works best for commercial installers?▼
Usually the direct ones. Outbound calling, personal cold email and LinkedIn reach the owner or finance director of a business that was not searching for solar, and an appointment setter turns that into a booked survey. Paid search and SEO catch businesses already looking but pull in homeowners unless the keywords and pages filter them out. Referrals and tenders are worth having but hard to plan a sales team around. Most installers combine two or three channels and judge each on cost per attended survey.
How many solar leads does it take to win one commercial project?▼
Work it out from your own numbers rather than an industry average. Track, for each channel or supplier, how many leads become an attended site survey, and how many surveys become a signed project. Divide the cost of the leads by the projects they produced, and add your team’s time. Booked, pre-qualified appointments need fewer leads per project than raw enquiries, which is why cost per lead on its own says little.
What is commercial solar lead generation?▼
Commercial solar lead generation is the process of finding and qualifying businesses with suitable rooftops, high daytime electricity use and budget authority, then booking them into a site survey with a commercial solar installer.
How much does a qualified commercial solar lead cost in the UK?▼
It depends on region, channel mix and how strictly each lead is qualified. Compare suppliers on the cost of a qualified, attended site survey rather than the cost of an enquiry: raw enquiries are cheaper, but unqualified ones rarely convert into installs.
Why are shared solar leads bad for commercial installers?▼
Shared leads are sold to multiple installers at once, so the prospect is fielding competing calls. That erodes trust, drives down pricing and wastes sales time on enquiries that were never exclusive.
What makes a commercial solar lead "qualified"?▼
A qualified commercial solar lead has confirmed decision-maker access, property ownership or landlord consent, annual electricity spend above £30k, a suitable roof, half-hourly metering and a buying window within 3–9 months.
How do I choose a solar lead generation company?▼
Ask what exactly you pay for (an enquiry, a booked meeting or an attended one), who qualifies each prospect and against which checks, whether leads are exclusive, what happens after a no-show or a booking that misses the brief, and how long the contract runs. Then compare providers on cost per attended survey and cost per signed project, not cost per lead.
Do paid video sales letters (VSLs) work for commercial solar?▼
Yes. A founder-led VSL that explains ROI, DNO constraints and payback periods pre-qualifies prospects before they book, so fewer of the surveys it books are wasted than with a form-fill campaign.
What is a sellable site survey?▼
A sellable site survey is a paid feasibility study, usually refunded on install. It filters out tyre-kickers, positions the installer as a consultant and closes at 3–5x the rate of a free quote.
Should I pay a retainer or per booking for solar leads?▼
Pay-per-booking aligns the agency with your outcome. You only pay for qualified, attended surveys that match your brief, with replacements or refunds for no-shows and unqualified bookings.
How long does it take to see commercial solar bookings from a new campaign?▼
Most VSL or outbound campaigns generate the first qualified site survey within 2–4 weeks. Scale usually follows in weeks 6–12 once the offer, creative and ICP are tuned.