The Shift Nobody Selling Solar Can Ignore Anymore
Reps reporting that more than half their 2025 book was third-party-ownership stood at 44%. That is projected to hit 65% in 2026. Just as telling: the share of reps selling zero TPO deals dropped from 9% to 1% over the same stretch. A rep with no TPO pitch is now the outlier, not the default.
What TPO Actually Means, in Plain Terms
Third-party ownership is the umbrella term for lease and power purchase agreement (PPA) structures. Under both, a company other than the homeowner owns the solar equipment. The homeowner pays either a fixed lease payment or a per-kilowatt-hour rate for the power the system produces, and the owning company, not the homeowner, is the party positioned to claim Section 48E.
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Book a Solar CallWhy the Swing Is So Regional and So Fast
This is not a slow national drift. Michigan went from 1.16% TPO to 38.96% TPO in a single year. Connecticut moved from 9.23% to 50.00% over the same stretch. State-level incentive structures, credit-market conditions, and how aggressively dealer networks pivoted their pitch in that state all drive the swing, so a rep working more than one state cannot run one script and expect it to hold.
The Dealer Fee Mechanic Behind Every Loan Pitch
A solar loan typically carries an embedded dealer fee, averaging around 22% in 2026 with a documented range of 20% to 35%, that adds $5,700 or more to a typical loan principal. That fee is what funds the entire commission stack: setter, closer, and any dealer network involved. Under a TPO structure, that same commission cost does not disappear, it gets priced into the lease or PPA rate the provider offers instead of stacked onto a loan balance the homeowner sees itemized.
Setter and Closer Economics Under Each Path
Commission in solar sales typically runs per watt: a setter, the rep who books the appointment, earns roughly $0.05 to $0.15 per watt, while a closer, the rep who runs the in-home consultation and signs the contract, earns roughly $0.20 to $0.50 per watt. Both figures get funded differently depending on financing path, through the dealer fee on a loan, or through the priced-in rate on a TPO deal, but the commission structure itself does not change based on which path the homeowner picks.
A Two-Path Close Script
The practical approach is to present real numbers for both the cash-or-loan path and the TPO path at the appointment, rather than steering the homeowner toward whichever path is easier for the rep to pitch. Ask about financing intent, credit comfort, and ownership preference before the appointment is even booked, so the rep arrives already knowing which numbers matter most to that specific homeowner instead of guessing mid-pitch.
What this means for you
- TPO's share of reps' books is projected to hit 65% in 2026, up from 44% in 2025, and reps selling zero TPO have nearly disappeared, dropping from 9% to 1%.
- The swing is violent and regional: Michigan alone went from 1.16% to 38.96% TPO in a single year, and Connecticut went from 9.23% to 50.00%.
- The roughly 22% dealer fee that funds most loan-path commissions gets absorbed differently under TPO, priced into the rate instead of added to a loan balance, but the underlying commission stack is the same.
Sources
The external data in this guide draws on the sources below. Figures described in the text as estimates or industry triangulations are directional and are not attributed to a single dataset.
- gosolo.io, 2026 Solar Trends Report
- Aurora Solar, TPO financing trends 2026
- Aurora Solar, TPO, OBBB, and why third-party ownership matters
- IntegrateSun, solar dealer fees: the hidden cost
- Everstage, solar sales commission structure