SunStrong Won't Honor Sunnova & SunPower Warranties — CT AG Investigates (2026)

The letter arrives in a plain envelope. You almost miss it. It is on SunStrong Management letterhead — a company you may not remember agreeing to do business with, because you signed your contract with Sunnova or SunPower. The letter explains, politely, that SunStrong is now servicing your solar account.

Toward the bottom, in tone that sounds almost administrative, comes this sentence: "We did not assume Sunnova Production Guarantee or Limited Warranty obligations."

Read that again. The production guarantee — the thing that was central to why you signed the contract — is no longer honored. The 25-year warranty? Also gone. And somewhere else on the letter, maybe on a separate page: a new $10/month monitoring fee for access to the same system dashboard you already had.

If that is roughly your situation, you are not alone. And critically, you are not stuck. On March 26, 2026, Connecticut Attorney General William Tong announced a formal investigation into SunStrong Management LLC — the first major enforcement action against a solar successor entity that has been systematically voiding warranties post-bankruptcy. The same day, the CT AG announced a $275,000 settlement with Spruce Power over similar conduct.

Stick with me. I'll walk you through what SunStrong is actually doing, what the Connecticut AG is investigating, the legal theory that makes your position stronger than it looks, and — toward the bottom — the two outcomes we typically get for homeowners caught in this trap.

What SunStrong Is and How You Ended Up With Them

SunStrong Management LLC is a successor entity that acquired the servicing rights to Sunnova's and SunPower's residential solar customer accounts after those companies went bankrupt in 2024. If you had a Sunnova lease, a Sunnova loan, a SunPower lease, or a SunPower loan, your account was likely transferred to SunStrong at some point in 2024-2025.

You probably got a letter. It said something like "we're excited to continue servicing your solar system" and looked like a routine notice. It was not routine. It was the start of a systematic effort to strip obligations off the acquired customer base.

What SunStrong Is Actually Doing to Customers

Problem #1: The Production Guarantee Was Voided

Sunnova customers bought their systems partly on the strength of the Sunnova Production Guarantee — a written commitment that if your system produced less power than projected, Sunnova would pay you the difference at your utility rate. SunPower had a similar guarantee.

SunStrong sent customers a letter containing the language quoted in Connecticut AG materials: "We did not assume Sunnova Production Guarantee or Limited Warranty obligations."

In other words: the guarantee that made the system worth buying no longer exists. SunStrong took the servicing rights and the monthly payments, but not the obligations that came with them.

Problem #2: The New $10/Month Monitoring Fee

Sunnova and SunPower customers originally had system monitoring included in their contracts — a baseline part of the service. SunStrong began charging customers a new $10/month fee for access to the same monitoring portal they already had access to.

$10/month does not sound like much. Over 20 years, it is $2,400. Across hundreds of thousands of acquired customers, it is tens of millions of dollars in revenue extracted from people who already paid for this service.

Problem #3: Equipment Warranty Denials

Solar panels carry manufacturer warranties (typically 25 years on power output, 10-25 years on materials). Inverters carry separate warranties (usually 10-25 years). Those are manufacturer warranties, so they theoretically survive any installer or servicer change.

But in practice, you need the servicer to file warranty claims, coordinate replacement shipments, and send technicians. When SunStrong refuses to do that — or makes it prohibitively slow — the manufacturer warranty becomes functionally useless.

Problem #4: Transfer and Buyout Issues

Customers trying to sell homes with Sunnova or SunPower systems on them are hitting SunStrong as a wall. Transfer requests take months. Buyout quotes come in at inflated numbers. Systems that were supposed to add value to a home sale are actively preventing sales.

What the Connecticut AG Is Doing (And Why It Matters Nationwide)

Connecticut AG William Tong announced on March 26, 2026 that his office is formally investigating SunStrong Management LLC. The investigation is examining:

• Whether SunStrong has unlawfully repudiated obligations it should have assumed from Sunnova and SunPower
• Whether the new $10/month monitoring fee is a permissible charge or a unilateral contract modification
• Whether the "we did not assume those obligations" letter constitutes deceptive trade practice
• Billing practices more broadly

This matters nationwide for two reasons:

First, state AGs coordinate. Once one state opens an investigation and starts producing evidence, other state AGs join in. Texas, New York, California, and Colorado have all been active in solar enforcement over the past 18 months. Expect additional state investigations to pile on SunStrong through 2026.

Second, the Connecticut AG simultaneously announced a $275,000 settlement with Spruce Power — another solar successor entity accused of similar conduct. Spruce paid. That sets a template. SunStrong will face pressure to settle or face a much worse outcome at trial.

For individual homeowners, these investigations create discovery — the company is forced to hand over contracts, internal communications, and financial records — that feeds directly into individual cases.

What Sunnova and SunPower Customers Can Do Right Now

1. Document the SunStrong letters. Save every piece of communication. The letter announcing they did not assume the warranty. The letter about the new $10/month fee. Any denial of a warranty claim. Any billing statement showing the new fee charged. These documents are your case.

2. Pull your original Sunnova or SunPower contract. You need the original contract terms — what Sunnova or SunPower actually committed to. If the original contract says "Sunnova shall provide system monitoring at no additional charge" and SunStrong is now charging $10/month, that contradiction is your claim.

3. Pull your production data. Download every monthly production report SunStrong still lets you access. If your system is underperforming — which is often why homeowners discover the warranty issues in the first place — the data proves damages.

4. File a complaint with your state AG. If you live in Connecticut, file directly with CT AG Tong's office — your complaint joins an active investigation. If you live in any other state, file with your own state AG and cite the Connecticut investigation in your complaint. States coordinate on these matters.

5. File a complaint with the CFPB. For solar loan issues specifically, the Consumer Financial Protection Bureau handles complaints against lenders and loan servicers. This creates a federal paper trail and often forces faster responses from the company.

6. Do not sign any "account update" or "terms modification" from SunStrong. These documents frequently contain release language that waives your claims against Sunnova, SunPower, SunStrong, or all three. Do not sign anything until it has been reviewed.

7. Get a free case review. See below.

The Legal Theory — Why This Is a Strong Case

When a company acquires another company's customer accounts and servicing rights, there are legal doctrines that determine what obligations transfer. You do not get to pick and choose — you cannot keep the revenue streams and discard the warranty obligations. That is called "successor liability," and it exists precisely to prevent what SunStrong appears to be doing.

Add to that:

• Breach of contract claims — your original contract required specific services that SunStrong is no longer providing
• State consumer protection act claims — the repudiation letter itself may be a deceptive act under CT UTPA and equivalent statutes in other states
• FTC Holder Rule claims against the solar lender — if your solar loan was financed through Mosaic, GoodLeap, Sunlight, or Dividend, the lender is subject to your claims against the installer/successor under the Holder Rule
• Bankruptcy plan violation claims — Sunnova and SunPower bankruptcy reorganization plans specified what obligations would continue; SunStrong appears to be violating those plans in some cases

For homeowners, this stack of overlapping claims produces real leverage. Solar successor entities like SunStrong know this and are often quicker to settle individual claims than their big-company predecessors were — they do not have the same brand protection motivation.

What About Your Loan?

If your Sunnova or SunPower system was financed through a loan (not a lease), your loan is a separate contract with a separate lender — Mosaic, GoodLeap, Sunlight Financial, or Dividend are common. That loan continues regardless of what SunStrong is doing.

But — and this is critical — under the FTC Holder Rule, your lender is subject to the same claims and defenses you have against the seller. If the original installer (Sunnova/SunPower) promised services through the contract that the successor (SunStrong) is now refusing to provide, that breach flows up to your lender. The practical result: full loan cancellation or major loan reduction is on the table, even when the original installer is in bankruptcy.

For more: How to Cancel a Mosaic Solar Loan, How to Cancel a GoodLeap Solar Loan, and How to Cancel a Dividend Finance Solar Loan.

Here Is What Actually Happens When We Take Your Case

We are not a referral mill. We review every case before we take it. If you meet the criteria — and most homeowners reading an article like this one do — here is what typically happens:

Outcome #1: Your contract gets completely canceled. You keep the system.

Read that again. That $30,000 loan, that $80,000 loan, that $150,000 loan — gone. Wiped. And the equipment on your roof? You keep it. It is yours. Hire a local electrician or solar tech to clean it up and tie it in properly, and you have got a functioning solar system for the cost of a service call.

Not a typo. That is the best-case outcome, and it is what we push for on every case we accept.

Outcome #2: Your loan gets massively reduced. Typically 40% to 60%.

Every case is different, but the pattern is consistent:

• A $150,000 loan knocked down to around $75,000
• A $70,000 loan cut to $35,000
• A $175,000 loan restructured to something you can actually live with

If we cannot completely kill the contract, we fight like hell to get the principal slashed — and we have a track record of doing it.

If we take your case and cannot deliver either outcome?

You get 40% of your fee back after we have exhausted every angle. That is our guarantee, in writing. Nobody else in this space puts that on paper. We do — because we only take cases we believe in.

The Bottom Line

SunStrong is not going to voluntarily reinstate the Sunnova and SunPower warranties they repudiated. They are extracting revenue from an acquired customer base, which is exactly what successor entities are designed to do unless someone — an AG, a class action, or individual homeowners with good lawyers — forces them to do otherwise.

Connecticut AG William Tong just made the first move. Other states will follow. Class actions are already being prepared. This is the moment when individual homeowners get the best settlements — before the class certification motions slow everything down, before SunStrong standardizes their settlement offers at the low end, before the story moves off the front pages.

If you are a Sunnova or SunPower customer dealing with SunStrong, you have legal leverage you did not have six months ago. Use it.

Related Reading

• Sunnova Bankruptcy — What Happens to Customers
• SunPower Bankruptcy — What Homeowners Need to Know
• Sunnova Complaints in California
• Sunnova Complaints in Florida
• How to Cancel a Sunnova Contract
• Solar Company Went Out of Business — Your Options
• Freedom Forever Files Chapter 11 — What Homeowners Need to Know
• Solar Panels Stopped Working — Now What?
• Solar Monitoring Not Working — Your Options
• Solar Misrepresentation Lawsuit Guide