If your SunPower system develops a fault, the hard part is no longer proving that something is wrong. It is knowing who to send the claim to. The 2024 Chapter 11 filing by the original SunPower Corporation changed the paperwork trail for California homeowners, and a claim that once went to a single company may now belong to a panel manufacturer, an inverter maker, or your local installer instead. This guide walks the filing process step by step, so you can route each problem to the party still obligated to fix it. If you first want to confirm whether your SunPower warranty is still valid after the bankruptcy, start there, then come back here to file.
Start by Identifying Which Warranty Covers Your Problem
A SunPower system was never protected by a single warranty. It was covered by a stack of separate promises, each backed by a different company. After the bankruptcy, that distinction is the whole game, because some of those promises are still fully enforceable while others lost their original administrator.
The warranties on a typical SunPower system
Most residential SunPower installations carry five distinct coverages. The panel (module) hardware warranty is backed by whoever manufactured the panels, which, for many SunPower systems, is Maxeon, a separate company. The inverter or microinverter warranty is backed by the inverter maker, frequently Enphase. The battery warranty, where a system includes storage, follows the battery program that supplied it. The workmanship warranty is the obligation of the company that installed the system. The production or performance guarantee, which promised a minimum energy output, was the original SunPower Corporation’s own promise.
Match the symptom to the right warranty
Pinning the symptom to the correct coverage saves weeks. A cracked, delaminating, or dead panel is a module hardware claim. An inverter that has stopped converting power or is throwing fault codes is an inverter claim. A battery that will not hold a charge is a battery claim. A roof leak at a mount, loose racking, or sloppy wiring is a workmanship claim. A system that simply makes less energy than promised, with no failed parts, points to the production guarantee. Before filing anything for low output, rule out the ordinary causes by reading up on why your system is producing less than expected, because shading, soiling, or an offline meter is not a warranty defect.
Gather the Documents Before You File
Every manufacturer and installer will ask for proof before they open a claim. Assembling this package once, up front, keeps you from restarting the process three times.
What paperwork proves your claim
You will want your original installation contract, the system’s commissioning or permission-to-operate date, the equipment list with panel and inverter model and serial numbers, and any warranty registration. Photos of the defect and a record of the fault from your monitoring history make the difference between a fast approval and a stalled ticket. If you cannot get into your monitoring account to pull that production history, work through pulling your SunPower monitoring data first, since the data log is often the most persuasive evidence you can attach.
Where to find records if you have lost them
Missing paperwork is common on systems that changed hands or were installed years ago. Your installation date and equipment details can usually be reconstructed from city or county permit records, your utility interconnection agreement, and the installer’s own files. The full recovery process is covered in our guide to finding your original installer records. Recover the install date in particular, because every warranty term is measured from it.
Filing a Panel or Inverter Hardware Claim
Hardware claims are the most likely to succeed after the bankruptcy, because they are backed by manufacturers that are still operating independently of the original SunPower Corporation.
Panel (module) claims
Identify the panel manufacturer from your equipment list or the label on the back of a module. If your panels were made by Maxeon, the module hardware and power warranties are administered by that manufacturer and follow the panel itself, not the bankrupt seller. File directly with the manufacturer’s warranty portal, supply the serial numbers and defect photos, and expect them to verify the model and manufacture date against your records. Approved module claims are usually resolved with a replacement panel of comparable output, though you may owe the labor to swap it if your installer is gone.
Inverter and microinverter claims
Inverter coverage works the same way. Enphase microinverters, common on SunPower systems, carry their own multi-year manufacturer warranty that you claim through Enphase directly, independent of SunPower. String inverters follow their own maker. Register the claim with the inverter manufacturer, include the serial number and fault code, and confirm whether the coverage supplies a replacement unit only or also contributes toward labor. As with panels, the part is usually the manufacturer’s responsibility, while the installation labor may be yours if the original installer has closed.
Filing a Battery or Storage Claim
Storage claims need an extra step, because the servicing path depends on which product you have.
Legacy SunVault storage
Legacy SunVault storage was sold and administered as a SunPower program, so its program-level support was among the coverage disrupted by the predecessor’s bankruptcy. That does not automatically leave you without recourse. Identify the actual battery and power-electronics manufacturer inside the system, because the underlying component maker may still honor its own hardware warranty even when the SunPower-branded program wrapper is gone. If your storage is part of an older integrated setup, read what happened to the SunPower Equinox system so you know which parts of that ecosystem are still supported.
Newer battery hardware
Batteries installed more recently, or added through a current provider, are backed by their present manufacturer and servicer, so you file those claims through that company’s normal channel. Keep the battery serial number, install date, and any capacity data from the monitoring app, since storage claims almost always hinge on measured capacity loss rather than total failure.
Filing a Workmanship or Installation Claim
Workmanship claims follow a different path from hardware, because the obligation belongs to the company that installed your system, not to any manufacturer, and not to SunPower’s national organization.
When your installer is still in business
Many SunPower systems were installed by an independent dealer whose workmanship warranty is separate from anything the bankruptcy touched. If that dealer is still trading, file the workmanship claim directly with them for issues like roof penetrations, flashing, racking, or wiring. Confirm the company’s status first using our walkthrough on how to check whether your installer is still in business, and reference your contract, which spells out the workmanship term.
When your installer has closed
If the installing company is gone, the workmanship promise usually has no successor to enforce it, which is the harshest gap the bankruptcy exposed for some owners. Your realistic options are to hire a qualified independent solar contractor to repair it out of pocket, or to have a current SunPower partner assess whether the fix is worth doing on the existing system. Keep every invoice, because a documented repair protects the home’s resale value and the standing of your surviving hardware warranties.
What to Do When a Claim Is Denied or Unclaimable
Not every problem has a party left to bill, and knowing when to stop chasing a claim is as valuable as knowing how to file one.
The lost production guarantee
The production or performance guarantee was the original SunPower Corporation’s own commitment, so for pre-October-2024 legacy systems, it is generally the only coverage with no successor to honor it. If your only complaint is that output has drifted below the guaranteed figure and no individual part has failed, there is usually no manufacturer to file against. Treat that as a signal to optimize the system’s real performance rather than chase a claim that no longer has an owner.
Repair, out of pocket, or replace
When a claim is denied or unclaimable, weigh the cost of an out-of-pocket repair against the age and remaining value of the system. A newer array with one failed part is worth repairing. An older system stacking multiple unclaimable failures may be past the point of good money after bad, and our guide on when replacing the system makes more sense lays out that math. A current installer can also fold a partial repair into a broader upgrade, so you are not paying twice.
How a Current SunPower Partner Can Help
You do not have to navigate this alone, and using a current, authorized SunPower partner does not mean writing off the equipment already on your roof. A working partner can identify each component’s true manufacturer, file the still-valid hardware claims on your behalf, and quote the labor for anything a manufacturer covers as parts only. Where a coverage gap exists, they can price the repair honestly against a modern replacement rather than defaulting to the most expensive path. The current SunPower company operating today is a distinct business from the bankrupt predecessor, and its authorized partners service both legacy hardware and new installations, which is exactly the continuity a stranded owner needs.
Getting Your Claim Across the Line
The bankruptcy did not erase your warranties so much as scatter them. Once you know that panels, inverters, batteries, and workmanship each answer to a different party, filing becomes a matter of sending the right proof to the right desk. Sort your problem into the correct coverage, gather your install date and monitoring records, file hardware claims with their manufacturers, and route workmanship to a solvent installer. When you want help mapping your specific system and filing on your behalf, you can talk to the team at SunPower Estimate for a straightforward read on what is still covered.
Frequently Asked Questions
Are SunPower panel warranties still honored after the bankruptcy?
In most cases, yes, because panel hardware and power warranties are backed by the module manufacturer, often Maxeon, a separate company from the bankrupt SunPower Corporation. You file directly with that manufacturer using your panel serial numbers and install date. The manufacturer typically covers the replacement part, though labor may be your responsibility if your original installer is no longer operating.
Who do I contact to file a SunPower inverter claim?
Contact the inverter manufacturer, not SunPower. Enphase microinverters, common on these systems, are claimed directly through Enphase under their own multi-year warranty, and string inverters through their maker. Have the serial number and fault code ready, and confirm whether the coverage supplies a replacement unit only or also contributes toward labor.
What documents do I need to make a SunPower warranty claim?
Assemble your installation contract, the commissioning or permission-to-operate date, the equipment list with model and serial numbers, any warranty registration, defect photos, and your monitoring production history. If paperwork is missing, rebuild the record from permit filings, your utility interconnection agreement, and installer files. Recover the install date first, since every warranty term is measured from it.
My SunPower installer went out of business, so is my workmanship claim gone?
If the installing company has closed and left no successor, the workmanship warranty usually has no party left to enforce it. Your panel and inverter manufacturer warranties still stand. For the installation issue itself, a qualified independent contractor or a current SunPower partner can repair, and you should keep every invoice for resale and hardware-warranty purposes.
What happens to my SunPower production guarantee?
The production or performance guarantee was the original SunPower Corporation’s own promise, so for pre-October-2024 legacy systems, it generally has no successor to honor it. If output has slipped but no part has failed, focus on restoring real performance rather than filing a claim with no owner. If a component has actually failed, that is a hardware claim you file with the relevant manufacturer instead.
Can I still transfer my SunPower warranty if I sell my home?
It depends on which coverage you mean, since manufacturer hardware warranties generally follow the equipment to the new owner, while program-level and workmanship terms vary. The full home-sale process is covered in our guide on transferring the warranty when you sell your home, which walks through what documentation a buyer will expect.
