Best Solar Marketing Agency: How to Choose One That Fits.

A solar marketing agency helps residential and commercial solar installers generate their own leads, book site surveys and turn proposals into installed systems, without relying on shared aggregator leads. A good one writes every ad and sales claim to FTC and state rules, collects TCPA consent correctly before the first call or text, and measures itself on signed contracts and installs in your CRM, not lead counts.

This guide is for solar installers and EPCs with a real monthly ad budget that are hiring a first serious agency or replacing one. For how we run this work ourselves, see our marketing for solar installers page.

What a solar specialist does that a generalist does not.

A generalist runs ads and reports leads. In solar that breaks at consent, claims and speed. A specialist builds around them:

• Owned lead flow. Search, social and site traffic go to your own estimator and survey booking, so you are not paying for the same homeowner five competitors bought.
• Consent built into the form. Every lead form carries a TCPA disclosure that names your company, and the consent record (time, page, wording, IP) is stored with the lead.
• Claims discipline. Savings, payback, tax credit and "free" language is written to FTC guidance and state rules before launch, and sales decks match the ads.
• Speed to lead. A solar lead cools in minutes, so routing, instant text, callback tasks and calendar booking are part of the marketing build.
• Pipeline math. Leads, surveys, proposals, signed contracts, permits and installs are tracked in one place so spend is judged on installed systems.

The solar market in numbers.

Residential solar is in a harder market than the headline numbers suggest. According to the SEIA and Wood Mackenzie Solar Market Insight 2025 year in review, the US installed 43.2 GW of solar in 2025, while residential installs were 4,647 MW, down 2 percent from 2024. Their September 10, 2026 release reported 11.4 GWdc installed in the second quarter of 2026, with 9.6 GWdc of that utility-scale, and said the residential market continues to face challenges following the expiration of the residential solar tax credit, with a return to growth forecast for 2027.

That credit change matters for marketing. As SEIA's explainer on the One Big Beautiful Bill sets out, the law signed July 4, 2025 ended the Section 25D residential clean energy credit for expenditures made after December 31, 2025. Commercial and third-party-owned systems are governed by separate business credits, so lease and PPA messaging differs from cash and loan messaging. Any agency still running "30% federal tax credit" ads to homeowners who buy is creating a deceptive claims problem.

Channels that actually produce installs.

Set targets from your own close rate and margin with the break-even cost per lead calculator, and see our lead generation systems service for the follow-up side.

TCPA consent rules for solar lead follow-up.

Solar is one of the most litigated categories under the Telephone Consumer Protection Act, because installers call and text fast and often buy leads from third parties. The rules worth knowing, at the time of writing:

• Prior express written consent. The FCC's rules at 47 CFR 64.1200 require prior express written consent for telemarketing calls and texts to cell phones made with an autodialer or an artificial or prerecorded voice. Consent must be a signed written agreement (an electronic signature counts) that authorizes the seller to contact a specific number and states that consent is not a condition of purchase.
• One-to-one consent. In January 2025, the Eleventh Circuit vacated the FCC's one-to-one consent rule in Insurance Marketing Coalition v. FCC, so federal law does not currently require consent to name a single seller. Consent that clearly names your company is still the strongest position, especially with purchased leads.
• Revocation. FCC rules that took effect April 11, 2025 let consumers revoke consent by any reasonable means, including replying STOP, and require callers to honor it within 10 business days. A broader "revoke all" provision has been delayed while the FCC reviews it.
• Do Not Call. Telemarketing calls to numbers on the National Do Not Call Registry need written consent or an established business relationship, and calling hours are limited to 8 a.m. to 9 p.m. local time.
• Damages. Under 47 U.S.C. 227, consumers can sue for $500 per violation, up to $1,500 if the violation is willful or knowing, which is why class actions follow fast dialing programs.
• State laws. Several states, including Florida and Oklahoma, have their own telephone solicitation laws with private rights of action. Your agency and your counsel should know the rules in every state you sell in.

FTC and state rules on solar advertising claims.

Savings, payback and incentive claims are where solar advertising gets into trouble. The FTC's consumer guidance, Solar Power for Your Home, tells homeowners to check that contract terms match what the company's ads, proposals and salespeople said, and notes that future utility rates are hard to predict. It is blunt about pressure tactics:

• Deception and substantiation. Section 5 of the FTC Act prohibits deceptive advertising, and savings or payback numbers need a reasonable basis. Show assumptions (utility rate, usage, financing terms) next to any savings figure.
• "Free" solar. The FTC's guide on use of the word "free" requires all conditions to be clear and conspicuous. A lease, PPA or loan is not free, and state attorneys general have pursued solar lead generators over "free solar" ads.
• Government affiliation. Ads that imply a government program, a utility partnership or a "new state law" that does not exist are a common enforcement target. Texas now bans falsely implying affiliation with a utility or government agency outright.
• Environmental claims. The FTC's Green Guides say a marketer that sells the renewable energy certificates for its electricity should not claim it uses renewable energy, and the FTC notes that lease and PPA customers usually cannot claim RECs or tax credits.
• Tax credits. With Section 25D ended for expenditures after 2025, homeowner ads should not promise a federal credit the buyer cannot claim. State and local incentives vary and should be named specifically.
• Texas. Texas SB 1036 requires residential solar retailers and salespersons to register with TDLR (registration provisions effective September 1, 2026), bans any "false, misleading, or deceptive oral or written statement" in solar sales, requires registration numbers in agreements and gives buyers five business days to cancel.
• California. The Contractors State License Board requires the Solar Energy System Disclosure Document on the front of residential solar contracts, in the language used in the sales pitch, and California contractors must show their license number in advertising.

Criteria to judge a solar marketing agency.

Red flags.

• Ads for "free solar panels" or a "new government program".
• Promises of a 30 percent federal tax credit to homeowners buying a system after 2025.
• Guaranteed appointment counts with no definition of a qualified survey.
• Autodialing purchased leads with no consent records.
• Savings figures with no stated assumptions.
• No plan to report signed contracts or installs.

Questions to ask in the first call.

• What will the monthly report show for surveys, signed contracts and installs, and where does that data come from?
• Show me the consent language on your lead forms. Does it name our company, and where are consent records stored?
• How do you handle STOP replies and revocation across calls, texts and email?
• Who approves savings, payback and incentive claims, and how do the ads match our sales script?
• Are the leads exclusive to us, and do we own the ad accounts?
• What happens in the first five minutes after a homeowner submits the estimator?
• How do you adjust messaging now that the residential federal credit has ended?

What a solar marketing agency costs.

These are typical market ranges as widely published in agency pricing surveys, not Theory Road quotes. Retainers for small and mid-sized businesses run from the low thousands to the tens of thousands of dollars a month, paid media management is commonly around 10 to 20 percent of ad spend, and website and systems projects range from a few thousand dollars to six figures. Our guide to how much a marketing agency costs covers each model in detail.

• Monthly retainer. A set fee for managing defined channels. Predictable, with media billed separately.
• Percentage of ad spend. The fee rises with budget. Ask how the agency decides when to cut spend.
• Pay per lead or per appointment. Common in solar. Check exclusivity, how a qualified appointment is defined and whether no-shows count.
• Project fees. Websites, estimators, CRM and proposal tool integrations are usually fixed projects with a deposit.
• Media. Compare every quote as fee plus media plus tools.

In-house team vs specialist agency vs generalist agency.

How to run the selection.

Where Theory Road fits.

Theory Road builds marketing, websites and lead systems for residential and commercial solar installers. We build savings-first sites with an estimator and survey booking, run Google and Meta campaigns from an approved claims sheet, put consent language that names your company on every form and store the record with the lead, and connect leads to your CRM and proposal tools so reporting runs to signed contracts and installs. Paid work runs through our Google Ads management service, and you can check platform rules with our ad policy map.