When a Solar Company Closes and Reopens Under a New Name

By Olivier Beauchemin · Published October 2026

OwlWatt is independent of every installer named on this page. The examples are drawn from published news reports and court-approved sales, and none of the companies is accused of wrongdoing here. This is general information, not legal advice, and the law varies by state.

When a solar company closes and another company with a new name takes over its customers, whether the new company owes your old warranty or production guarantee generally depends on what it agreed to take on in the sale, and on exceptions that vary by state. A familiar name or phone greeting does not settle it either way. Often the answer is in the sale paperwork. Ask the new company to confirm your coverage in writing, check the company's history before you sign anything new, and keep your own record of what your system produces.

Three Different Things Get Called "Starting Over"

Solar installers change names for ordinary reasons, including mergers, new owners and rebrands. When a company has gone through bankruptcy, a restart is sometimes called a phoenix company, a term for a business that closes and returns in a new form. The label does not tell you whether anything improper happened, and it does not tell you who owes your warranty. The legal structure does. There are three common structures:

Three Documented Examples, Described as the Sources Describe Them

These are the cases our research turned up where the public record is clear. Court-approved sales like these are lawful and common, and none of these companies is accused of wrongdoing. Each is a court-approved or reported asset sale followed by a name change or a name revival, and each is described below only as far as the cited reporting goes.

CompanyWhat the reporting says
Sungevity (US) to Solar SpectrumSungevity filed for Chapter 11 in March 2017. A Delaware bankruptcy court approved the sale of its American assets to Northern Pacific Group for $50 million in April 2017, and two days later the company changed its name to Solar Spectrum. Solar Spectrum offered former Sungevity customers a chance to purchase a warranty solution. In August 2017 it merged with Horizon Solar Power and the Sungevity brand returned. Sungevity International, based in Amsterdam, was a separate company that was not in bankruptcy. Source: pv magazine USA, April 2020.
iSun to Legacy PoweriSun filed for Chapter 11 in June 2024. On August 23, 2024 a federal judge approved Siltstone Capital's $10 million acquisition of iSun and its residential subsidiary SunCommon. SunCommon kept its name, and iSun's commercial business was rebranded Legacy Power. Source: VTDigger. In February 2025 Vermont Business Magazine reported that iSun's Chapter 11 case was being converted to Chapter 7 and that SunCommon said the filing did not include it: Vermont Business Magazine.
SunPower assets to Complete Solaria (renamed SunPower)SunPower filed for bankruptcy in August 2024 and sold assets to Complete Solaria for $45 million. In 2025 Complete Solaria rebranded as SunPower. The name on today's SunPower is a different company from the one that signed older SunPower contracts. Source: pv magazine, April 2025. See also our page on SunPower's production guarantee after bankruptcy.

The pattern across the three is an asset sale, a new owner, and a brand that either continues, changes or returns. For a homeowner the question is the same each time: which company, if any, took on the promise I was given? The Sungevity case is the clearest illustration. After the sale, the successor offered former customers a warranty to buy. Any other sale turns on its own paperwork and on state law.

Does the New Company Owe Your Old Guarantee?

This section is general information. A lawyer who knows your state's law is the right person to apply it to your contract.

The General Starting Point

Courts in many states start from the same rule: a company that buys another company's assets does not take on the seller's debts and obligations unless an exception applies. The California Supreme Court listed the usual four, and then added a narrower product-line rule for injuries from defective products. The buyer does not assume the seller's liabilities unless "there is an express or implied agreement of assumption," "the transaction amounts to a consolidation or merger of the two corporations," "the purchasing corporation is a mere continuation of the seller," or "the transfer of assets to the purchaser is for the fraudulent purpose of escaping liability for the seller's debts" (Ray v. Alad Corp., 19 Cal. 3d 22, 28 (1977)).

Massachusetts recognizes the same four exceptions (Guzman v. MRM/Elgin, 409 Mass. 563 (1991), and Milliken & Co. v. Duro Textiles, LLC, 451 Mass. 547 (2008)). A federal appeals court applied them in DeJesus v. Park Corp., No. 12-2014 (1st Cir. Aug. 1, 2013), an unpublished opinion. That was a product-injury case. The buyer there kept some of the old company's staff and answered its phones "Thank you for calling Bertsch," the old company's name, and the court still held it was not liable as a successor. Each state applies these exceptions in its own way, and courts weigh the facts case by case.

What Bankruptcy Adds

When the seller is in bankruptcy, federal law allows a sale of property "free and clear" of certain interests in listed circumstances, such as when the interest holder consents or when the sale price is greater than the total of all liens on the property (11 U.S.C. § 363(f)). How that applies to a customer's warranty claim is a legal question. You can check the paperwork yourself. The asset purchase agreement filed on the court docket may list which contracts and liabilities the buyer assumed and which it did not.

What to Do With That

  1. Find the bankruptcy case. The claims agent's website or the court docket (PACER, at pacer.gov) is searchable by the old company's name.
  2. Look for the asset purchase agreement and any schedule of assumed contracts or liabilities. Customer warranties may or may not appear.
  3. Ask the new company, in writing, whether it assumed your contract and warranty and what service it will provide. Keep the reply.
  4. The new company's answer does not settle the question by itself. If it did not assume them, the old promises generally remain with the old company unless one of the exceptions above applies. See our guide to what to do when an installer goes out of business.
  5. If the answer is unclear or you think the structure was used to avoid obligations, consult a lawyer. Most state bar associations run a lawyer referral service that can connect you with one who handles consumer or business matters. Your state attorney general's consumer protection office can also take complaints. We summarize several state statutes in our California and Massachusetts guides.

How to Check a Solar Company's History Before You Sign

Many installers are stable local businesses, and a name change on its own is not a warning sign. A short check takes about half an hour and tells you which kind of company you are dealing with.

Questions to Ask the Installer

  1. How long has this legal entity existed, and has the business operated under any other names?
  2. Has the company or any of its principals been through a bankruptcy, and was any part of the business sold?
  3. Who exactly is the party making each promise in the contract, and what is its legal name?
  4. If the company closes, who services my system and who honors the workmanship warranty? Is that in writing?
  5. Is the production guarantee backed by insurance, or only by the company's own balance sheet?
  6. Will I be registered as the owner of the monitoring account from day one, so I can see my own data?
  7. Can I assign the warranty to a buyer if I sell the house?

Why Your Own Production Record Matters in Every Version of This

If a company changes hands, the first thing that gets lost is the history: who monitored the system, what it produced, and what was promised. A record kept by you survives every change of name. Make sure the Enphase or SolarEdge monitoring account is yours (our guides cover Enphase and SolarEdge), export your history on a schedule, and compare it with a weather-adjusted expected number (how that works). If a successor company does honor your guarantee, that record is how a shortfall is shown. If it does not, the same record can support a claim against the old company. The shortfall claim guide walks through it.

Common Questions

What is a phoenix company in solar?

It is an informal label for a business that closes and then returns in a new form, often under a new name. It describes a pattern, not wrongdoing: many name changes follow ordinary mergers or court-approved sales. For a homeowner the legal structure decides who owes the old warranty.

Does a solar company that bought the old company have to honor my warranty?

Not automatically. The general rule in most states is that a buyer of assets does not take on the seller's obligations unless it agrees to, with exceptions that vary by state. Ask the new company to confirm your coverage in writing and check the sale agreement filed in the bankruptcy case. A lawyer can apply your state's law.

How do I find out if my solar installer changed names?

Search your state's Secretary of State business database for the company's formation date and any prior names, check the contractor license lookup, and search PACER for bankruptcy filings under the company name.

Is a solar company changing its name a red flag?

Not by itself. Companies rename after mergers, new ownership and rebrands. The useful questions are whether it is the same legal entity and who stands behind the warranty.

Should I talk to a lawyer if my solar installer closed and reopened?

A lawyer is the person who can say whether a warranty or guarantee still has to be honored in your situation. Most state bar associations run a lawyer referral service that can connect you with someone who handles consumer or business matters. OwlWatt does not recommend specific firms.

A Record That Outlasts Any Company Name

OwlWatt monitors your Enphase or SolarEdge system independently of whoever installed or acquired the installer. It keeps your production history, compares it with a weather-adjusted expected number, and produces a dated record you can hand to a successor company, a manufacturer or a lawyer.

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