A solar system is a 25-year investment bolted to your roof, so it is fair to ask what happens if a panel quits, the array underperforms, or a leak shows up three winters from now. The honest answer surprises most first-time buyers: a solar system does not come with one warranty; it comes with three, and each one covers a completely different kind of failure. On top of those sits your homeowners insurance, which handles a fourth category the warranties deliberately leave out. Knowing which document pays for which problem is one of the most useful things you can learn before you sign anything. It is also one of the common fears homeowners have about going solar that disappears once you see how the pieces fit together. Here is what each layer of coverage actually protects, and where the real gaps are.
The Three Warranties Behind Every Solar System
When an installer says your system is “warrantied,” they are usually bundling three separate promises from two different companies. The panel manufacturer issues two of them, and the installation company issues the third.
Product, performance, and workmanship
The product warranty (sometimes called the equipment or materials warranty) covers the physical panel against manufacturing defects. The performance warranty guarantees the panel will still produce a promised percentage of its rated power decades from now. The workmanship warranty covers the labor and everything the installer touched, from the roof penetrations to the wiring. Inverters and batteries carry their own separate warranties on top of these. Because the coverage comes from more than one party, a claim can involve more than one phone number, which is exactly why it pays to understand the split before a problem ever appears.
What a Product Warranty Actually Covers
The product warranty is the one most people picture when they hear the word. It protects the panel itself against defects in materials and manufacturing, things like a failed solder joint, a delaminating backsheet, a junction box that fails, or cells that crack under normal conditions. If a covered defect appears, the manufacturer repairs, replaces, or refunds the panel.
Typical term lengths
Most quality panels carry a product warranty of 25 years today, and a handful of premium brands go longer. A decade ago, 10 or 12 years was standard, so a long product term is a useful signal that a manufacturer trusts its own build quality. Inverters commonly carry 10 to 12 years, sometimes extendable, and home batteries usually run 10 years.
What it does not cover
A product warranty covers the hardware, not the labor to swap it out, and not the lost electricity while a bad panel sits offline, unless your paperwork specifically adds those. It also assumes the panel was installed and maintained correctly, which is where the workmanship warranty and your own records come in.
What a Performance Warranty Guarantees
Solar panels lose a little output every year as they age, a slow slide called degradation. The performance warranty puts a floor under that slide. A common modern guarantee promises the panel will still produce around 87 to 92 percent of its original rated power after 25 years, degrading no faster than a set fraction of a percent per year. If your panels fall below the guaranteed curve and the cause is normal aging rather than damage, the manufacturer makes it right.
Why the curve matters more than the headline number
Two panels can both advertise “25-year performance warranty” and still protect you very differently. The one that guarantees a higher output in year 25, and a gentler annual decline, is genuinely worth more over the life of the system. This is the number that connects directly to how long solar panels actually last, because real service life and guaranteed output are two ways of describing the same thing, and it is worth checking that guaranteed curve against a detailed solar estimate before you compare warranty terms across bids.
Workmanship Warranties and the Installer Behind Them
The two manufacturer warranties say nothing about the person who drilled into your roof. That job belongs to the workmanship warranty, issued by the installation company, and for many homeowners it is the coverage that matters most in the first several years. It covers the labor and the installation itself: roof penetrations, flashing, mounting hardware, conduit, and wiring. If a mount works loose or a poorly sealed penetration lets water in, the workmanship warranty is what pays to fix it.
Term lengths vary widely
Workmanship coverage ranges from a slim 1 or 2 years to a strong 10 or 25 years depending on the company. A longer term is a real differentiator, but it is only worth the paper it is printed on if the company is still in business when you call. That makes the workmanship warranty inseparable from how to choose a solar company, because an established, financially stable installer is far more likely to answer that call in year eight.
Roof leaks and labor gaps
Read carefully for whether the workmanship warranty covers the resulting damage from a leak, not just the leak itself, and whether it pays the labor to remove and reinstall panels if a manufacturer defect requires it. Those two clauses separate a token warranty from a genuinely protective one.
Where Homeowners Insurance Fits In
Warranties handle defects and aging. Your homeowners insurance handles sudden, accidental, external events, and the two rarely overlap. Rooftop solar panels are generally treated as a permanent part of your home, so most standard policies cover them against the same perils as the roof itself: fire, wind, hail, lightning, falling trees, and in many cases theft or vandalism.
Confirm coverage and value before you install
Because panels add value to your home, tell your insurer before installation so your dwelling coverage limit is raised to include the system. A system that pushes your rebuild cost above your existing limit could otherwise leave you underinsured after a major loss. Ground-mounted arrays and detached structures sometimes need a separate endorsement, so ask specifically rather than assuming.
Leased and financed systems
If you lease your panels or use a power purchase agreement, the third-party owner typically insures the equipment, not you, though you still confirm who carries what in writing. An owned system, whether paid in cash or financed, is yours to insure, which is one more reason ownership and coverage go hand in hand.
What Neither Warranties Nor Insurance Cover
The gaps between the layers are where unhappy surprises live, so it is worth naming them plainly.
Common exclusions
Warranties routinely exclude damage from improper installation by an uncertified party, unauthorized repairs, misuse, and acts of nature, since the last one is insurance territory. Insurance, in turn, generally excludes wear and tear, gradual deterioration, manufacturing defects, and often flood and earthquake unless you carry separate coverage for those. Neither one pays you for electricity you failed to generate while a panel was down, unless a production guarantee in your contract specifically promises it.
What voids coverage
You can quietly void a manufacturer warranty by letting an unlicensed person work on the array, by adding incompatible components, or by failing to keep the system maintained as the manual requires. Keep your original contract, both manufacturer warranties, the workmanship warranty, and any maintenance records in one place, because a clean paper trail is what turns a valid claim into a paid claim.
Keeping Your Coverage When You Sell
Good solar warranties are transferable, which matters more than it first appears. A product and performance warranty that follows the system to the next owner keeps the panels an asset rather than a question mark at closing, and that transferability is part of why solar can add to your home’s value. Some workmanship warranties transfer automatically, others require a form and a small fee, and a few allow only one transfer, so the details deserve a look well before you list.
Handing off the paperwork
When the time comes, the smoothest part of selling a house with solar panels is handing the buyer a tidy folder with every warranty, the transfer instructions, and the maintenance history. A buyer who can see exactly what is covered pays more confidently than one staring at an undocumented array.
Putting It All Together Before You Buy
Solar coverage is not complicated once you stop treating it as one thing. A product warranty protects the hardware, a performance warranty protects the output, a workmanship warranty protects the installation, and your homeowners insurance protects against the storm that none of them cover. That whole picture starts with a full solar design built around your actual roof, so the production and warranty numbers you compare are grounded in reality rather than a generic template.
The homeowners who never get an unpleasant surprise are simply the ones who asked for all four in writing before signing, and confirmed how long each lasts and whether it transfers. Reviewing the questions worth asking before you get a solar quote is a good way to walk into that conversation prepared. When you are ready, you can request a solar quote and get the warranty terms in writing so nothing about your coverage is left to assumption.
Frequently Asked Questions
What does a solar warranty cover?
A solar system typically carries three warranties. The product warranty covers the panel against manufacturing defects, the performance warranty guarantees a minimum power output as the panel ages, and the workmanship warranty covers the labor and installation, including roof penetrations and wiring. Inverters and batteries carry their own separate warranties.
How long do solar panel warranties last?
Most quality panels today carry a 25-year product warranty and a 25-year performance warranty. Inverters commonly run 10 to 12 years and batteries around 10 years. Workmanship warranties vary the most, from 1 or 2 years up to 10 or even 25 years depending on the installer.
Does homeowners insurance cover solar panels?
Rooftop panels are usually treated as a permanent part of your home, so most standard homeowners policies cover them against perils like fire, wind, hail, and lightning. Tell your insurer before installation so your dwelling coverage limit is raised to include the system’s value, and ask about endorsements for ground-mounted arrays.
What is the difference between a product and a performance warranty?
The product warranty replaces or repairs a panel that fails from a manufacturing defect. The performance warranty guarantees the panel will still produce a promised percentage of its rated power over time, and pays out if normal aging drops output below that guaranteed curve. They protect against two different failures.
What voids a solar panel warranty?
Common ways to void coverage include letting an unlicensed or uncertified person work on the system, adding incompatible components, making unauthorized repairs, and failing to maintain the array as the manual requires. Keeping your contract, warranties, and maintenance records together protects your ability to file a valid claim.
Does a solar warranty transfer when I sell my house?
Product and performance warranties are usually transferable to the new owner, which helps the system stay an asset at resale. Workmanship warranties vary: some transfer automatically, others require a form and a fee, and a few allow only a single transfer. Confirm the terms before you list the home.