Google Ads for Solar Installers: What a Lead Really Costs

Every solar installer with a Google Ads account has asked the same question at 11pm while staring at a spend report: what does a lead actually cost, and is this money better spent on SEO? The honest answer is that Google Ads for solar installers can work brilliantly or burn cash fast, and the difference usually comes down to CPC discipline, negative keywords, and knowing when to stop paying for clicks Google would have sent you for free.

This is a trade-facing breakdown of real cost mechanics — not a “10 tips to grow your business” listicle. If you’re an installer setting a Google Ads budget for the first time, or auditing why last quarter’s spend didn’t convert, the numbers below should map onto what you’re seeing in your own account.

What solar keywords actually cost per click

UK solar CPCs vary enormously by intent and geography, but the pattern is consistent across the trade: the closer a keyword gets to “ready to buy,” the more expensive the click.

Domestic install CPCs sit in the £3–£9 range for most UK regions, with London, the South East and anywhere with high competitor density (multiple national installers bidding) pushing towards £10+ on the sharpest commercial-intent terms. Commercial and B2B solar keywords — anything touching “commercial solar,” “solar for warehouses” or “solar asset finance” — routinely clear £10–£20 per click because the deal size justifies aggressive bidding from installers, brokers and finance providers alike.

If you’re seeing £15+ CPCs on a residential 4kW-system keyword, that’s a targeting problem, not a market reality — you’re probably bidding on a term dominated by national aggregators and directories that can absorb a higher cost-per-click than a single-branch installer ever should.

Clicks per conversion: the number that actually matters

CPC gets all the attention, but it’s the wrong metric to obsess over. What matters is cost per qualified lead, and that’s driven by your click-to-conversion rate — which for solar is usually poor compared to other trades, because it’s a considered, high-value, multi-week purchase.

Realistic benchmarks for UK solar PPC:

• Landing page conversion rate: 2–6% is normal for a decent landing page with a clear form and trust signals. Below 2%, something is broken — page speed, trust stack, or a form asking for too much upfront.
• Clicks per lead: at a 3% conversion rate, that’s roughly 33 clicks per lead. At £5 average CPC, that’s £165 per lead before you’ve spoken to anyone.
• Leads per sale: solar close rates vary hugely by installer (quality of qualification, speed of follow-up, price positioning), but 10–20% lead-to-sale is a common range for domestic. That puts fully-loaded PPC customer acquisition cost somewhere between £800 and £1,650 for a typical domestic job — before survey costs, admin or ad management fees.

Commercial solar PPC leads cost more per click but convert at a lower volume with a far higher deal value, so the maths inverts: a £40 commercial lead that converts 1-in-8 against a £15,000+ install is a completely different ROI conversation to a domestic residential funnel. This is the trap installers fall into when they run one blended campaign for both — commercial keywords quietly eat a budget set for domestic volume. If you’re building out commercial campaigns, it’s worth studying how commercialsolarpanelsinstallation.co.uk structures its own commercial funnel by sector, because sector-specific landing pages (warehouse, hotel, care home) consistently outconvert one generic “commercial solar” page — the query intent behind “solar panels for care homes” or “solar for warehouses” is materially different even though both sit under “commercial.”

Setting a realistic budget

Work backwards from the lead volume you can actually handle, not from a round number that felt safe. A regional installer wanting 15–20 qualified domestic leads a month, at the blended CPC and conversion assumptions above, needs roughly £1,500–£3,000/month in ad spend as a starting point — and that’s before testing. Budgets under £1,000/month rarely generate enough data (Google needs volume to optimise Smart Bidding) and tend to just fund the learning phase indefinitely.

A few budget-allocation rules that hold up across the installers we track:

1. Don’t split thin. One well-funded campaign per service line (solar, battery, EV, heat pump) beats four underfunded ones competing against each other in the auction.
2. Geo-fence tightly. Radius targeting around your actual install area, not the whole county. Paying London CPCs to reach a village 40 miles outside your service radius is pure waste.
3. Dayparting matters less than people think for solar specifically — enquiry behaviour is spread across evenings and weekends when homeowners actually sit down and think about cost, so aggressive dayparting cuts often just move cost per lead sideways rather than down.
4. Budget for a 60–90 day learning window before judging performance. Solar’s consideration cycle is longer than most PPC verticals; last-click data three weeks in will look worse than the true picture.

When PPC beats SEO (and when it doesn’t)

This is the question installers actually want answered, and the honest version is: it depends on your timeline and your existing organic footprint.

PPC wins when:

• You need leads this month — a new branch, a slow quarter, a grant-scheme deadline creating a short window of demand.
• You’re testing a new service line (battery storage, EV charging) and want fast signal on whether the keyword volume and conversion rate justify building out organic content.
• You’re in a hyper-competitive local market where organic page-one is realistically 12+ months away and a competitor already owns it.

SEO wins when:

• You’re looking at 12-month-plus ROI — organic clicks don’t have a marginal cost per click, so a page ranking well for “[solar panel installers near me]“-type terms keeps paying back long after the build cost is recovered.
• Your close rate on organic leads is meaningfully higher than paid (very common in solar — organic leads have usually already done more research and self-qualified before enquiring).
• You want to own informational queries too — grant eligibility, payback period, battery sizing — which build trust before someone is even ready to enquire. Paid can’t economically compete for that top-of-funnel volume; the CPC-per-click doesn’t justify bidding on “how does the Smart Export Guarantee work” when nobody’s converting from it same-session.

Most installers we work with run both, but weighted differently by stage of business. A newer installer without domain authority often needs PPC to generate cash flow while the organic site matures; an installer with two or three years of consistent content and backlinks can usually cut PPC spend by 40–60% without losing lead volume, because the organic engine has taken over the mid-funnel queries paid used to fund. Regional operators like Green Linc Renewables in Lincolnshire and ECOaim in Livingston are good examples of this pattern — both built out substantial location and service coverage before pulling back on paid spend, letting organic carry the steady-state volume while PPC handles seasonal spikes.

Negative keywords: where most installer budgets actually leak

This is the single highest-leverage lever in a solar PPC account, and it’s the one most installers under-invest in. A domestic solar campaign with no negative keyword list is functionally paying to educate people who were never going to buy.

Build your negative list around these categories from day one:

• Job-seekers: “solar panel installer jobs,” “apprenticeship,” “training courses,” “salary” — these clicks are common and completely wasted.
• DIY intent: “install solar panels myself,” “DIY solar kit,” “solar panel kit for shed” — different customer entirely, and DIY-intent clicks convert to nothing on a full-install landing page.
• Manufacturer/product research with no install intent: “best solar panel brand 2026,” “panel comparison” without a location or install modifier attached.
• Free/cheap modifiers: “free solar panels,” “government free solar scheme” — this one matters more than most, because it actively wastes budget on a misconception. There is no universal free home-solar grant in England in 2026 — support is means-tested (ECO4, Warm Homes) for low-income, low-EPC-rated homes only, and conflating that with general residential demand burns spend on people who don’t qualify and won’t convert. If your ad copy or landing page implies a blanket grant exists, you’ll also fail Google Ads’ policies on misleading claims.
• Competitor brand searches with “reviews,” “complaints” or “jobs” attached: you can bid on competitor names deliberately, but exclude the research/complaint modifiers that never convert.
• Repair/fault terms if you don’t do maintenance: “solar panel not working,” “inverter fault” — unless you offer O&M services, these clicks go nowhere. If you do offer maintenance, route them to a dedicated landing page rather than your install-quote page; a specialist like Solar Maintenance Solutions treats fault-diagnosis search intent as a completely separate funnel from new-install intent, which is the right structural call — the buyer psychology and page content needed are different.

Review search terms weekly for the first two months of any new campaign, then monthly once the negative list stabilises. A mature domestic solar account typically ends up with 150–300+ negative keywords; if yours has fewer than 50, you’re still leaking budget on irrelevant clicks.

Landing page and offer alignment

CPC and negatives get an account into shape, but conversion rate is decided on the landing page, and this is where installer accounts most often underperform relative to spend. A few things that move the needle disproportionately:

• Match the ad promise to the page exactly. An ad for “commercial solar installation [region]” landing on a generic homepage rather than a sector or region page tanks Quality Score and conversion rate simultaneously.
• Lead with a real, current cost range, not a vague “get a free quote” CTA with no pricing context. Buyers converting on solar keywords have usually already searched cost separately — installers like FLD Electrical in Swansea and Premier Electrical Renewables both anchor their quote pages with realistic system-size pricing rather than hiding it, which reduces the volume of unqualified quote requests that eat sales team time without ever leading to a job.
• State the 0% VAT position correctly. Residential solar and battery storage in Great Britain currently carries 0% VAT until 31 March 2027, after which it’s scheduled to return to 5%. This is a genuinely strong, factual urgency point for domestic campaigns running through 2026 — use it, but don’t inflate it into a false-scarcity “act now or lose thousands” claim; state the date and let the buyer do the maths.
• Battery storage economics need their own page, not a bolt-on paragraph. A Powerwall 3 or equivalent 10–13kWh battery typically runs £8,000–£10,500 installed, against £4,000–£8,000 for smaller-capacity systems — different buyers, different objections, different ad group.

If you want the underlying cost data broken down further for landing page use, thecostofsolar.co.uk’s solar battery storage cost guide and payback period breakdown are useful sourced references to link from your own quote pages — buyers trust third-party cost data more than installer-published pricing, and it reduces pre-qualification friction in the sales call.

The practical takeaway

Google Ads for solar installers is a volume-and-margin business, not a “set a budget and hope” one. Get the CPC targeting narrow, the negative list aggressive, and the landing page matched to the ad — in that order — before increasing spend. And treat PPC and SEO as sequential investments rather than competing ones: paid buys you leads now while organic content, done properly with real location and sector depth, is what eventually lowers your blended cost per lead below what any bidding strategy alone can achieve.