--- slug: solar-marketing-budget-2026-percent-of-revenue title: "Solar Marketing Budget 2026: Percent of Revenue" description: "How much should a solar company spend on marketing in 2026? Acquisition costs jumped about 40% this year. Set the budget from revenue, judge it on cost per install." date: "2026-10-04" dateModified: "2026-10-04" readTime: "9 min read" author: "Léo Ferreira" locale: en tags: - solar - marketing-budget - customer-acquisition-cost - benchmarks - 2026 tldr: "A solar marketing budget in 2026 should start from a percentage of revenue and end at a cost per signed install. A common cross-industry rule of thumb puts small-business marketing around 7 to 8 percent of revenue, and home services and solar tend to run higher, often 8 to 12 percent. But 2026 changed the math: Wood Mackenzie reports residential solar customer-acquisition cost jumped about 40 percent, from a low of $0.60 per watt in 2025 to a forecast $0.84 per watt in 2026, as the 30 percent federal tax credit for owned systems ended. So the number that actually decides your budget is cost per signed install, not cost per lead. Set the budget from your revenue goal, work back to installs, and measure everything against cost per install." faq: - q: "How much should a solar company spend on marketing in 2026?" a: "Start from a percentage of revenue, then adjust for 2026. A common cross-industry rule of thumb puts small-business marketing around 7 to 8 percent of revenue, and home-services and solar businesses often run higher, roughly 8 to 12 percent, more in aggressive growth mode. A solar company doing 3 million dollars in revenue would land somewhere around 240,000 to 360,000 dollars a year across everything: ads, website, and follow-up. Treat those as cross-industry ranges, not solar-specific laws. What matters more than the percentage is what each dollar returns in signed installs, which in 2026 costs more than it did last year." - q: "Why did solar customer acquisition cost go up in 2026?" a: "Because the subsidy that cushioned it ended. Wood Mackenzie reports residential solar customer-acquisition cost rose about 40 percent, from a five-year low of $0.60 per watt in 2025 to a forecast $0.84 per watt in 2026. The main driver is the expiration of the 30 percent federal tax credit for customer-owned systems, which had absorbed a lot of high-fee lead and dealer costs. With that buffer gone, every wasted lead and every bloated commission hits the installer directly, so the cost of acquiring a customer is both higher and more visible this year." - q: "What is a good cost per lead for solar in 2026?" a: "Cost per lead is the wrong number to anchor on, because a cheap solar lead that never signs costs more than an expensive one that does. Reported solar lead prices swing wildly, from low-cost shared leads to a few hundred dollars for exclusive screened appointments, and booked appointments carry high no-show rates. The figure that actually pays is cost per signed install: your total marketing spend divided by systems you actually installed. Expressed per watt, Wood Mackenzie's $0.84 per watt is the most defensible 2026 benchmark to measure yourself against." - q: "How do you set a solar marketing budget from a revenue goal?" a: "Work backward from installs, not forward from what feels comfortable. Decide how much revenue you want to add, divide by your average system value to get the installs you need, then divide by your real close rate to get the appointments and leads behind them. Multiply the installs by what a signed install costs to produce in your market, and that is your budget for the goal. This turns a vague number into a target you can hold spend accountable to, and it exposes instantly when a channel costs more per install than the install is worth." - q: "Is a bigger solar ad budget always better?" a: "No. Past a point a bigger budget just buys more of whatever you already have. If your follow-up is slow, more spend means more expensive leads dying in a voicemail, and in 2026 those wasted leads cost more than ever. The opposite mistake is just as common: starving the budget so the ad platform never gets enough conversion data to find real buyers, which keeps your cost per install high. The right budget is enough to let the platform learn, aimed at a funnel that books and shows appointments, and judged on cost per signed install." --- A solar installer we spoke with had a number in his head: $2,000 a month for ads. It had worked fine in 2024, back when the tax credit was quietly covering a lot of sins. He was doing a few million a year in revenue, and running the growth of that company on a budget he had not touched in two years. Then 2026 arrived, the credit went away, and the same $2,000 suddenly produced fewer signed installs at a higher cost each. The budget was not wrong because it was small. It was wrong because it was frozen, aimed at nothing in particular, and measured against the wrong number. Let's fix all three. ## How much should a solar company spend on marketing? Start with a percentage of revenue, not a gut feeling. A common cross-industry rule of thumb puts small-business marketing around **7 to 8 percent of revenue**, and home-services and solar companies tend to run higher, often **8 to 12 percent**, more if you are pushing hard for growth. Two honest caveats. First, those are cross-industry ranges, not solar numbers pulled from solar data, so use them as a starting frame, not gospel. Second, they cover everything, not just ads: your website, your follow-up tools, and the media spend together. But the frame does one useful thing immediately. A solar company at **3 million in revenue** lands somewhere around **240,000 to 360,000 dollars a year**, roughly **20,000 to 30,000 a month** across the whole marketing operation. That is the floor to reason from. Now the real question isn't the percentage. It's what each dollar brings back, and in 2026 that dollar buys less than it used to. ## Why marketing costs more for solar in 2026 This is the part that breaks old budgets, so it is worth stating plainly. Wood Mackenzie reports that residential solar customer-acquisition cost jumped about **40 percent**, from a five-year low of **$0.60 per watt in 2025** to a forecast **$0.84 per watt in 2026**. The main driver is the end of the 30 percent federal tax credit for customer-owned systems, which expired for systems placed after the end of 2025. For years that subsidy quietly absorbed a lot of expensive lead-buying and dealer-fee habits. With the buffer gone, every wasted lead and every bloated commission now lands straight on the installer. So a budget set in 2024 is funding 2026 costs. That is the squeeze, and it is why [solar customer acquisition cost rising 40 percent this year](/en/blog/solar-customer-acquisition-cost-2026-up-40-percent) is not a headline to skim past, it is the reason to rebuild the budget from scratch. The installers who survive this are not the ones who spend the most. They are the ones who know exactly what a signed install costs them, and refuse to overpay for it. ## What number should you actually chase? Not cost per lead. Cost per *signed install.* This is the single most expensive mistake we see solar companies make. They shop for cheap leads, celebrate a low cost per lead, and never notice that most of those leads never sign. Reported solar lead prices swing from cheap shared leads to a few hundred dollars for exclusive screened appointments, and booked appointments carry brutal no-show rates, so the price on the invoice tells you almost nothing. Two installers can pay the same per lead, but if one closes a quarter of them and the other closes a twentieth, their real cost is worlds apart. Leads don't pay your crew. Signed installs do. Cost per signed install (total spend divided by systems actually installed) is the number that survives all the ways cost per lead flatters you. And you have a clean 2026 benchmark to hold it against: Wood Mackenzie's **$0.84 per watt**. Multiply by your average system size and you have a target cost per install to beat. It also explains why [not all solar lead sources are worth the same, once you rank them by close rate](/en/blog/solar-lead-sources-ranked-close-rate-2026): the cheapest source per lead is often the most expensive per install. ## How do you set the budget from a revenue goal? Work backward from the installs you need, not forward from what you're comfortable spending. It's four steps, and you can do it on a napkin. 1. **Start with the goal.** How much revenue do you want to add this year? Say 20 more installs. 2. **Work back to appointments and leads.** If you close, honestly, one in five booked appointments, 20 installs means about 100 appointments. If a third of leads book and show, that is a few hundred leads. 3. **Price it against cost per install.** Whatever it costs to produce a signed install in your market times 20 is your ad budget for that goal. 4. **Sanity-check it against $0.84 per watt.** If your blended cost per install is far above that 2026 benchmark for your system size, you have a funnel problem, not a budget problem. Do this and the budget stops being a number you flinch at and becomes a number you're buying something specific with. You'll also spot instantly when a channel is underwater: if the cost per signed install is higher than the margin on the install, more spend just loses money faster. ## Can your budget be too big, or too small? Both, and solar companies manage to make each mistake. Here's the shape of it: | Monthly budget vs revenue | What usually happens | | --- | --- | | Frozen or way under (e.g. 2,000/mo on 3M revenue) | Too little data for the platform to learn; leads trickle; cost per install stays high | | The 8-12% zone, aimed at a real funnel | Platform can learn; cost per install becomes measurable and improvable | | Big budget, broken follow-up | More leads, same leak: you pay 2026 prices to lose faster | Look at the top and bottom rows: they're the two traps. Starve the budget and the ad platform never gets enough conversions to figure out who your buyers are, so it keeps guessing and your cost per install stays ugly. Flood the budget into a company that doesn't follow up fast, and you simply buy more leads to drop on the floor, now at a 40 percent higher acquisition cost. The middle row is the target: enough spend to let the platform learn, pointed at a funnel that books and shows appointments, judged on cost per install. If your leads come in and sit, [book a free audit](https://audit.independence-network.com/?lang=en&source=blog): more budget won't fix a follow-up leak, and we'll show you which one you have. ## What good looks like when spend meets a real funnel The point of all this isn't a bigger budget. It's spend that lands on a funnel built to close, so every dollar is traceable to an install. And it is why ads alone, with no funnel behind them, keep disappointing: [ads without a system are just a faster way to spend the money](/en/blog/ads-alone-wont-save-your-solar-company). A med spa we work with in Nice put about **620 euros of ad spend** through a tight funnel (clear offer, matched page, instant follow-up) and turned it into **193 leads at 3.21 euros each, and 88 paying clients, with the first lead answered 1h27 after launch.** That is a different industry with a shorter sales cycle and a much smaller ticket than a solar install, so the raw numbers won't copy across, and we flag it as cross-industry on purpose. But the machine does transfer: right budget, aimed at a funnel that follows up fast, measured on cost per booked, showed, signed job. In a year where every lead costs 40 percent more, that discipline is the difference between growth and quietly going backward. ## 30-Second Audit Three yes/no questions about your solar marketing budget. Answer them before you set next month's number. 1. Is your budget set from a **revenue goal and cost per signed install**, not a number you froze two years ago? 2. Do you track **cost per install** against a real benchmark like $0.84 per watt, instead of celebrating cheap leads? 3. Is your spend **enough for the platform to learn**, aimed at a funnel that follows up in minutes and confirms appointments? If any answer was no, [book a free audit](https://audit.independence-network.com/?lang=en&source=blog): we'll pull your numbers and tell you exactly what's broken, even if you don't end up working with us. Budget by revenue. Judge by installs. In 2026, measure both twice.