I.   THIS WEEK'S STORY
 

Someone knocked.

He had a tablet and a folder and he wanted to talk about my roof. Free installation. Thirty percent back at tax time. A smaller electric bill from the first month.

You know the pitch. Roughly one American home in twenty has panels on it now, and most of those owners borrowed to get them.

The chain behind that knock runs longer than it looks. The salesman worked for a dealer. The dealer worked for an installer. The installer had a finance partner you had never heard of. You signed a twenty-five year note at the kitchen table, and the finance partner sold that note to bond investors inside a month.

Three links in that chain have since broken.

Solar Mosaic filed for Chapter 11 in June 2025. Sunnova filed the same month. Freedom Forever, the second-largest residential installer in the country, filed on April 15, 2026 in Delaware. More than a hundred US solar companies have failed or closed since 2023.

The note did not break. It was the only part of the arrangement built not to.

So I went to look at what those notes are doing. KBRA keeps an index of every rated pool of securitized residential solar loans. The borrowers inside it carry weighted average credit scores between 710 and 770.

That is prime. These are people with mortgages and car loans and clean payment records.

In the March 2026 reporting month, those pools lost money at an annual rate of 3.93%.

Prime auto loan pools lost 0.82% in January 2026. KBRA called that the highest reading since February 2018 and treated it as news.

The same borrowers walk away from their panels almost five times as often as they walk away from their cars.

That gap is the story. It is not a consumer credit story, because these consumers keep paying everything else. It is a story about one specific contract.

The panels keep producing. The paperwork behind them does not.

 

I have spent a week trying to work out why. The best answer I have is that a solar loan is the only debt most households carry where what they bought can stop working and nobody is left to fix it.

A car that breaks has a dealer. A house that leaks has a builder, or a warranty, or a court. A twenty-five year solar note written by a company that no longer exists has a servicer, and a servicer only collects.

We are tracking this as a credit story rather than an energy story. The energy part is settled. The financing part is still being priced.

II.   THE DIVERGENCE
 
Prime borrowers losing at subprime rates
Annualized net losses, KBRA U.S. Solar Loan ABS Index
2.15%
 
2.61%
 
3.93%
 
MAY '23 MAR '25 MAR '26
dark red = annualized net loss rate on rated residential solar loan pools

The pools in this index hold residential solar loans made to borrowers with weighted average credit scores between 710 and 770. On any lender's scale, that is prime.

Prime auto loan pools lost 0.82% a year in January 2026. KBRA flagged that as the highest since February 2018. Solar pools holding the same grade of borrower lost close to five times as much.

March 2026 was a good month for the sector. Losses fell 41 basis points from February. The number on the right is the improvement.

 
III.   THE ANOMALY SCORE
 
68/100
MISPRICED, NOT YET BROKEN

Consumer securitized credit is the piece that moved this week, and it moved in one corner while the senior bonds on that same corner sat still.

 
0 · Normal 50 · Unusual 100 · Extreme
3.93%
SOLAR LOAN LOSSES
4.8x
VS PRIME AUTO
25%
INDEX IN WORKOUT
21%
2026 INSTALL DROP
SOLAR LOAN LOSSES

Rated pools of residential solar loans lost 3.93% a year as of the March 2026 remittance, up 132 basis points from a year earlier.

VS PRIME AUTO

Prime auto pools lost 0.82% in January 2026, their worst since February 2018, and that is about a fifth of the solar rate on comparable borrowers.

INDEX IN WORKOUT

Roughly a quarter of the index sits in deals originated by Sunnova, which filed Chapter 11 in June 2025 and handed servicing to a successor firm.

2026 INSTALL DROP

SEIA and Wood Mackenzie expect the US residential solar market to shrink 21% this year, after the homeowner tax credit ended on December 31, 2025.

IV.   THE EVIDENCE
 
THE SERVICER
When a bankrupt lender hands over its loan book, the loss numbers change overnight

Loans outlive the companies that write them. That handoff is where the measurement problem starts.

Sunnova, a Houston solar lender, filed Chapter 11 in June 2025. Servicing on its securitized loan book moved to SunStrong Management in early November 2025.

SunStrong changed two conventions on arrival. Sunnova had waited out a thirty-day grace period before recording a delinquency or a charge-off. SunStrong stopped waiting. It also re-aged accounts sitting on expired payment plans once they passed 180 days late.

Annualized losses on that book went from 4.6% in October 2025 to 11.7% in November. SunStrong attributed about 60% of the jump to the change in method.

KBRA placed 28 ratings across 12 Sunnova transactions on Watch Developing in January 2026.

So a quarter of this sector's published history was measured on a convention the successor described as out of step with the industry. The other three quarters have not changed hands yet.

 
 
 
THE PAPER
The loan survives the bankruptcy and the workmanship warranty does not

And here is where it spreads. The lender is one problem. The company that climbed on the roof is another.

Freedom Forever filed Chapter 11 on April 15, 2026 in Delaware, case 26-10522. Wood Mackenzie ranked it the second-largest US residential installer in 2025, at 6.1% of the market behind Sunrun's 12.7%.

The petition listed liabilities between $500 million and $1 billion against assets of $100 million to $500 million, and somewhere between 50,000 and 100,000 creditors. The company had put up close to 2 gigawatts of panels across 35 states, Puerto Rico and Washington, DC.

The filing stated that no funds would be available for unsecured creditors once administrative expenses were paid.

Homeowners holding warranty claims, unfinished work or paid deposits are unsecured creditors.

The promises to the homeowner are unsecured claims. The payment schedule is not a claim at all.

 

Its largest creditor is Mosaic Funding, owed roughly $114 million. Mosaic had filed its own Chapter 11 in June 2025, which removed one of Freedom Forever's funding lines.

Twelve days before the filing, Texas Attorney General Ken Paxton named the company in an initiative on deceptive sales practices in residential solar. None of that changes the monthly payment.

 
 
 
THE PRICING
Investors bought another pool of this last week, and the structure had changed

Meanwhile, the funding window never closed. Sunrun brought its eighteenth public securitization to market at the start of August: $293 million backed by 37,595 residential contracts, prime borrowers, with a discounted asset balance near $385.7 million.

Look at what those 37,595 contracts are. Leases and power purchase agreements. Not loans.

KBRA published research on March 31, 2026 finding a split down the middle of the sector. Loan-backed deals weakening. Lease-backed deals broadly stable.

The reason is in the contract. Under a lease, the household owns nothing and owes no note. The company owns the equipment and has to keep it running to get paid. Under a loan, the household owns everything, including the risk that nobody shows up.

Tax policy pushed the market that way. The homeowner credit ended on December 31, 2025. The commercial credit under Section 48E survived, and only the system owner can claim it.

KBRA expects about $385.2 billion of new asset-backed issuance in 2026, a post-crisis record and roughly 5% above last year. Solar is one of the few sectors it expects to shrink. Senior tranches held tight through the first half of the year while junior solar and home-improvement classes carried unusually wide premiums. The market repriced the paper it expects to take losses on. The senior paper still trades like prime consumer credit.

V.   WHAT ELSE WE'RE WATCHING
 

Three more things worth keeping track of this week.

The MSCI Emerging Markets Index is not what its name promises. As of June 30, Taiwan made up 27.3% of it, South Korea 27.3% and China 19.0% — correction, South Korea 23.7%. Three countries, more than seventy percent of the whole benchmark. One company, TSMC, has been running above an eighth of it on its own. On July 13 SK Hynix fell more than 15% in a single session, its worst day on record, and Samsung lost more than 10% over the same stretch. By July 20 the index was down more than 6% for the month. A diversified emerging markets fund is a semiconductor fund with a passport.

Core inflation has split across the rich world. Goldman Sachs Asset Management's August note puts core inflation across the G10 excluding the United States at 2.1%, and expects US core inflation near 3% in December. That is a full percentage point of daylight between America and its peers. Gaps like that usually settle in the currency before they settle in the bond market.

American trucking rates hit records this summer for an uncomfortable reason. FreightWaves' National Truckload Index printed an all-time high of $3.78 a mile on June 28, and its rejection index reached 17.64% on June 21, the highest since March 2022. ACT Research put June spot rates excluding fuel up 43% from a year earlier. But the American Transportation Research Institute measured the average cost of running a truck at a record $2.336 per mile in 2025, while owner-operator contract rates sat near where they were in 2022. Prices are rising because carriers are leaving, not because shippers are shipping more. We'll see.

 
VI.   16 C.F.R. PART 433
 

A man came to the door in 1968 and sold your grandmother aluminum siding.

She signed an installment contract at the kitchen table. A crew came, did half the job, and left. The phone number stopped working.

But the contract had already moved. The salesman sold it to a finance company that same week.

Commercial law called that finance company a holder in due course. It had bought the paper clean and in good faith, so her complaint about the siding stayed with the siding company. Her obligation ran to the bank.

So she paid. Full price plus finance charges, for work nobody finished.

The Federal Trade Commission examined that arrangement in November 1975 and settled on one word for it. The Commission called it an anomaly.

The fix was short. Title 16 of the Code of Federal Regulations, Part 433. Any seller who arranges the financing has to put a notice in the contract stating that whoever ends up holding it takes it subject to every claim the buyer could have raised against the seller.

It worked, and it is still there. The FTC published a note in September 2024 saying the rule still matters, and listed solar panels among the reasons.

There is a limit written into it, though. What a buyer can recover from the holder is capped at the amount the buyer has already paid.

On a twenty-five year contract in year three, that cap is almost nothing.

 

That is the shape to hold on to. A rule written in 1975 for a two-year siding job now stands behind contracts that run a quarter of a century, and its remedy scales with what a household has already lost rather than what it still owes.

Long paper changes the arithmetic of every protection written for short paper. I don't know how many people find that out the hard way this cycle.

The document always outlives the promise.

We'll see.