Christina Mathieson Segura | Real Estate Education
When a Solar Loan Won't Transfer: The Mosaic Problem | The Solar Lady of Real Estate
I Wanted To Be Right About Solar Leasing. I Didn't Want To Be This Right.
Solar is why I became a REALTOR®. Solar is why I became a mortgage loan originator. Solar is why I teach.
It was the starting point.
Everything I have built in this business since 2010 traces back to one observation: the solar industry was designed to sell systems, and nobody designed for what happens when the house sells.
For more than ten years I have been the person in the room saying the paperwork matters. That a lease is not a utility bill. That a third party holding rights in equipment bolted to a roof is a material fact, not a footnote. I have been told I was overreacting. I have been told the transfer process is routine. I have been told, more times than I can count, that it all works out at closing.
I wanted to be right.
I just did not want to be this right.
What Happened
Solar Mosaic was one of the largest residential solar lenders in the country. Since its founding in 2010 it funded more than $15 billion in loans to more than 500,000 households. In June 2025 it filed Chapter 11. It emerged on September 22, 2025, and servicing of the loan book, over $8 billion still being serviced, moved to Solar Servicing LLC, a subsidiary of Forbright Bank.
The new servicer has said it has no plans to originate new solar loans. This is a portfolio being managed to its end, not a lender building a business.
None of that, by itself, is a homeowner's problem. Loans survive bankruptcies. Payments continue. Rates do not change.
Here is the sentence that changes everything, published on the servicer's own homeowner FAQ page: "At this time, we do not offer loan transfers."
They suggest a payoff to facilitate a home sale.
They do not offer refinancing either.
Read that again as a listing agent.
A buyer cannot assume that loan. Not with excellent credit. Not with a strong file. Not with a cooperative seller on the other side of the table. There is no assumption process to qualify for, because there is no assumption process.
The homeowner's loan did not change.
The exit did.
One more detail worth noticing. The old Mosaic homeowner FAQ address now redirects to the new servicer's site. The company a homeowner signed with is gone, the page they were told to bookmark forwards somewhere else, and the policy that decides whether they can sell their house lives on a website they have never heard of.
Why This Is Worse Than A Bankruptcy Story
We have gotten used to installer failures. SunPower. Sunnova. Freedom Forever. Titan. Pink Energy. PosiGen. Purelight. And counting. When an installer fails, the workmanship warranty dies and the homeowner is left calling manufacturers by serial number. That is bad. It is also visible. The company disappears, the portal goes dark, and everyone understands something broke.
This is different, and quieter.
Nothing broke.
The servicer answers the phone.
The portal works.
The payments post.
There is no news story, no docket, no letter in the mail telling a homeowner that the rules for selling their house have changed.
It surfaces in week six.
After the inspection, after the appraisal, with a buyer and a lender and a title company already in motion, when somebody finally asks how the solar loan transfers and learns that it does not.
That is the part I have been warning about for a decade, and it is the part that never lands until it happens to someone you are sitting across from.
The Mechanics, So You Are Not Guessing
If your seller has a Mosaic loan, underwrite the file as a payoff at closing from day one.
There are no prepayment penalties, and interest is owed only through the payoff date. The balance is visible in the borrower portal. The servicer will issue a payoff demand letter good for a specific date up to ten calendar days out, by email. Order it timed to closing, but start the conversation at the listing appointment.
Then there is the lien.
The servicer describes its UCC-1 as a filing against the solar equipment rather than against the real property. Your title company will still want a termination in hand. Ask early who files the UCC-3 and how long it takes, because not one of the major solar lenders publishes that timeline.
And run the equity math before the sign goes in the yard. If the payoff exceeds the seller's equity, that is a problem you want to find in week one, not week six.
There is an upside on the other side of it.
Once the loan is paid and the lien is released, the system stops being encumbered personal property and becomes an owned asset that can carry contributory value in the appraisal. The obstacle at the closing table turns into an argument for your seller. But only if you get there on purpose.
The bigger lesson, which is not about loans.
Here is where I have to be precise, because precision is the whole job.
This is a loan situation, not a lease. I have spent ten years arguing about leases, and I am not going to blur the two to make my point land harder.
The lesson is broader than either one. Any arrangement in which a third party holds rights in equipment attached to a house is only as good as that third party's willingness to cooperate on the day the house sells.
That is true of a lease. It is true of a power purchase agreement. And as we just learned, it is true of a loan with a UCC filing behind it, including one the homeowner has been paying faithfully for years and reasonably believed was simply a debt to be paid off.
Ownership is not the question. The question is who holds rights, what those rights allow, and whether the company holding them today is the company that signed the paper. Servicers change. Policies change. The house still has to close.
That is the asymmetry I have been teaching against since 2015. The homeowner signed a twenty-five year document. The company on the other side of it may not exist in twenty-five years, and the entity that replaces it is not bound by the sales pitch.
The Numbers
There are more than 6 million solar installations in the United States as of the first quarter of 2026, according to SEIA and Wood Mackenzie, and the residential sector accounts for 97% of them. About 7% of American homes have solar today.
On the financing side, Wood Mackenzie reported that third-party ownership, meaning leases and PPAs, reached roughly 45% of the residential market for 2024 and crossed 50% in the fourth quarter for the first time since 2016.
More than a hundred residential solar companies have gone bankrupt or closed since 2023.
More than 500,000 households are carrying paper originated by one lender that no longer exists under its own name.
And here is the number I cannot give you.
Nobody publishes how many American homeowners are carrying solar paper with a servicer that will not permit a transfer.
Not the servicers.
Not the trade associations.
Not the regulators.
The single fact that matters most to a homeowner trying to sell their house does not exist anywhere in public.
That absence is the story. It is also why I started building a tracker instead of waiting for someone else to.
What to do with this
You do not need to be a solar expert. You need to ask two questions at every listing appointment where there are panels on the roof.
Who holds the paper.
And will they let it transfer.
Get the answer in writing.
Get it at listing, not at contract. If the answer is no, you have a payoff to plan and a lien to clear, and you have found it while you still have time to solve it.
I am teaching this, and a great deal more, at Triple Play in Atlantic City on December 8. If you work with solar-equipped homes, come. This material is changing faster than the courses that teach it.
This article is educational and is not legal or financial advice. Servicer policies change. Verify current terms directly with the servicer before relying on them.
Christina Mathieson Segura The Solar Lady of Real Estate™
Sources
Solar Servicing LLC — Homeowner FAQs, including "At this time, we do not offer loan transfers": https://solarservicingllc.com/homeowner-faqs/
Solar Servicing / Forbright Bank — official announcement of the Mosaic loan-servicing transition: https://www.forbrightbank.com/stories/newsroom/solar-mosaics-loan-servicing-operations-transition-to-solar-servicing/
Paul Hastings LLP — Solar Mosaic Chapter 11 exit; plan effective Sept. 22, 2025; $8B+ in loans to Forbright: https://www.paulhastings.com/news/paul-hastings-advises-solar-mosaic-in-chapter-11-bankruptcy-exit-and-transition-to-solar-servicing
Davis Polk — Solar Mosaic emerges from Chapter 11; plan confirmed Sept. 5, 2025, effective Sept. 22, 2025: https://www.davispolk.com/experience/solar-mosaic-emerges-chapter-11
pv magazine USA — Mosaic acquired; $15 billion funded to more than 500,000 households since 2010; no plans to originate new loans: https://pv-magazine-usa.com/2025/09/25/bankrupt-residential-solar-loan-provider-mosaic-is-acquired/
Solar Power World — Mosaic files Chapter 11 (June 2025): https://www.solarpowerworldonline.com/2025/06/solar-finance-platform-mosaic-files-for-bankruptcy/
New York Attorney General — James sues Attyx and lenders Solar Mosaic and WebBank (March 2026): https://ag.ny.gov/press-release/2026/attorney-general-james-sues-home-solar-power-company-and-lenders-cheating-new
SEIA — 6 million U.S. solar installations; 97% residential: https://seia.org/research-resources/6-million-solar-installations/
SEIA / Wood Mackenzie — U.S. Solar Market Insight (Q1 2026, 6 million milestone): https://seia.org/research-resources/us-solar-market-insight/
Wood Mackenzie — U.S. residential solar 2024: TPO 45% for the year, >50% in Q4: https://www.woodmac.com/news/opinion/us-residential-solar-turbulence-persisted-through-2024/
Harvard Business School (Institute for Business in Global Society) — ~100 U.S. solar companies bankrupt since 2023: https://www.hbs.edu/bigs/why-solar-companies-are-going-bankrupt