What changed in the solar market in 2026?
The residential tax credit expired and the market shrank. SEIA and Wood Mackenzie's Q2 2026 Solar Market Insight forecasts a 21% residential contraction in 2026 after the end-of-2025 demand rush pulled installs forward. Recovery is not expected until 2027, and then at roughly 6% annual growth.
The second-largest national installer went bankrupt, tax equity got tighter, and cash/loan demand is weak. Third-party ownership (leases and PPAs) still qualifies for tax credits through 2030 if projects were safe-harbored, which is why sales teams are shifting to TPO and prepaid lease offers.
Module prices fell more than 20% year-over-year to about $0.34/Wdc, and residential system pricing is down 7%. Hardware is cheaper. The customer is the expensive part.
| Metric (US residential solar) | 2025 | 2026 | Source |
|---|---|---|---|
| Customer acquisition cost | $0.60/W (5-year low) | $0.84/W (+40%) | Wood Mackenzie, Mar 2026 |
| Market size (installs) | Record Q4 rush | -21% contraction | SEIA/WoodMac Q2 2026 |
| Federal 25D credit (owned systems) | 30% | 0% | OBBBA, July 2025 |
| Module price | $0.43/Wdc | $0.34/Wdc | SEIA/WoodMac Q2 2026 |
| Recovery expected | — | 2027, ~6%/yr | SEIA/WoodMac Q2 2026 |
Who should a solar company be marketing to now?
Homeowners with high utility bills in states with rising retail rates, and commercial buyers who still have safe-harbored tax credit eligibility. The "get 30% back" homeowner is gone; the "my bill went up 12% again" homeowner is not.
For residential, target by utility territory and rate class, not just zip code. Bill savings under a lease or PPA is the message. California, Florida, and Illinois led Q1 2026 residential installs, and Florida and Illinois posted their strongest quarters since 2024.
For commercial, the buyer is a CFO or facilities lead motivated by rising rates and a four-year window to energize safe-harbored projects. LinkedIn and direct outreach beat Meta here. Pennsylvania commercial installs grew specifically because businesses were hedging rate increases.
One filter matters more than any demographic: can this person be served by a TPO product? If your financing partners can't write leases in a market, don't spend to acquire customers there.
Which solar marketing channels have the lowest acquisition cost?
Referrals and owned digital channels. Purchased leads and door-to-door are the most expensive per install, and their costs are climbing fastest because every installer is fighting over a smaller pool.
Industry benchmarks for 2026 put door-to-door at $1,500 to $3,000 per acquired customer, purchased digital leads at $800 to $1,500, partnerships at $500 to $1,000, and referrals at $300 to $600. Google Ads cost per lead for solar runs $30 to $150 depending on the market, with non-branded search at the top of that range.
| Channel | Typical cost per acquired customer (2026) | Best for | Watch out for |
|---|---|---|---|
| Referral program | $300–$600 | Installers with 200+ past customers | Needs a system, not a flyer; pay out fast |
| Google Search + LSA | $30–$150 per lead; roughly $600–$1,200 per install | High-intent, bill-shock homeowners | CPCs rising with market contraction; landing page must show savings, not credits |
| Meta / YouTube | $800–$1,500 | Demand creation, retargeting, storage upsell | Lead quality drops without a qualifying form and fast follow-up |
| Partnerships (roofers, realtors, electricians) | $500–$1,000 | Steady volume in one metro | Slow to build; needs a rev-share that survives thin margins |
| Purchased leads | $800–$1,500 (appointments $400–$800 each) | Filling a gap for one quarter | Shared leads, no data ownership, cost rising fastest |
| Door-to-door | $1,500–$3,000 | New market entry | Highest CAC and highest cancellation rate |
Wood Mackenzie's read is the same as ours: without the 30% credit as a buffer, installers can no longer afford dealer fees plus purchased leads plus commission-heavy sales. The companies that come out of 2026 healthy are vertically integrated, with in-house sales fed by owned marketing. We covered the mechanics of that shift in why solar CAC is spiking and the system fix.
How should you run Google Ads for solar in 2026?
Bid on bill-savings and "solar cost" intent, send traffic to a landing page that quotes a monthly payment under a lease or PPA, and hold the sales team to a five-minute callback. That combination is what keeps cost per install in the $600 to $1,200 range while cost per lead climbs.
Across DUO-managed solar and home-service accounts, the biggest single driver of cost per booked appointment is not the bid strategy. It is whether the lead is contacted within five minutes. Industry benchmarks for 2026 show contact rates of 50% to 70% on quality leads and appointment-set rates of 40% to 60% on exclusive leads; that top end only happens with fast follow-up.
Practical rules:
- Kill "tax credit" and "30% off" ad copy. It is now false for owned systems and attracts the wrong buyer.
- Segment campaigns by utility territory, not just city, so the landing page can cite the local rate.
- Run Local Services Ads alongside Search. LSA leads are pay-per-lead and verified, which matters when CPCs are rising.
- Retarget every site visitor with a storage or "lock your rate" message for 30 days. A battery attach is often the difference between a profitable and unprofitable install.
For the full setup, see our guide to Google Ads for solar lead generation.
How do you build a referral and lifetime-value engine?
Treat every installed customer as the start of a relationship, not the end of a sale. Wood Mackenzie found that installers moving to customer lifetime value models, meaning referrals, storage upsells, EV chargers, and roofing, spend more on acquisition in 2026 but generate follow-on sales at a fraction of cold-lead cost from 2027 on.
The minimum viable referral system has four parts: an automated ask at 30 and 90 days post-install, a reward paid within 14 days of the referred install, a landing page the customer can share by text, and CRM tracking so you know which customers actually refer. Referral-sourced customers cost $300 to $600 to acquire against $3,000 to $5,000 average blended CAC.
Layer the upsell calendar on top: battery at 6 to 12 months (45% of new solar homes now add storage), EV charger when they buy a car, roof and electrical panel when the inspection flags it. Each one is marketing to someone who already trusts you.
What does a solar website need to convert in 2026?
A monthly-payment calculator, TPO and cash options side by side, local proof, and a form that qualifies on utility bill. The tax-credit banner has to come down.
Homeowners now compare your lease payment against their current bill, so show that math above the fold. Reviews still matter (93% of consumers say online reviews influence purchases), but for solar specifically, an installed-in-your-neighborhood map and a one-year-later customer bill do more than star ratings.
Keep the Google Business Profile current with recent installs and respond to every review. Complete profiles get about 70% more visits, and for local "solar installer near me" searches the profile is often the first thing the buyer sees.
Email and SMS nurture is where 2026 leads close. With cash and loan demand weak, the average buyer takes longer, so a 90-day sequence built around rate increases, storage, and TPO explainers keeps you in front of them without spending more on ads.
What should you measure instead of cost per lead?
Cost per install, cancellation rate, and 12-month customer value. Cost per lead tells you what a channel charges. Cost per install tells you whether it works.
Track these weekly:
- Cost per booked appointment, by channel.
- Appointment-to-contract rate (benchmark: 15% to 25% from consultation to signed contract).
- Cancellation rate before install (door-to-door and purchased leads run highest).
- Cost per completed install in $/W, benchmarked against the $0.84/W 2026 national average.
- Referral rate: installs sourced from past customers as a share of total.
If you cannot attribute a closed install back to the ad click, phone call, or referral that started it, you are guessing on the single largest cost line in a shrinking market. That attribution layer is the "Be Booked" piece of our full solar marketing guide, and it is usually where we start with a new solar client.
Where does this leave your solar marketing plan?
In 2026, marketing is a margin problem, not a volume problem. Own your lead generation, sell bill savings through TPO, build the referral engine now so it pays in 2027, and measure to the install.
If you want a second set of eyes on your acquisition cost by channel, book a call with DUO. We will show you where the spend is leaking before you commit another quarter to it.
FAQ
Is the 30% solar tax credit still available in 2026?
Not for homeowner-owned systems. The Section 25D credit expired December 31, 2025 under the One Big Beautiful Bill Act. Third-party-owned systems (leases and PPAs) can still receive the commercial credit through 2030 if the provider safe-harbored projects, which is why most installers are pushing TPO offers.
What is a good customer acquisition cost for a solar company?
Below the national average of $0.84/W in 2026, or roughly $3,000 to $5,000 per residential customer on a blended basis. Referral-sourced customers at $300 to $600 and Google Search installs at $600 to $1,200 are the channels that pull the blended number down.
Should solar companies still buy leads in 2026?
Only to fill a short-term gap. Purchased leads cost $800 to $1,500 per acquired customer, are often shared with competitors, and leave you with no first-party data. Wood Mackenzie expects the installers that survive 2026 to be the ones with in-house sales fed by owned marketing.
