Installing solar panels is one of the most significant upgrades a homeowner can make, but the installation is only part of the equation. A solar panel warranty from solar panel manufacturers is what safeguards your investment for the long term, protecting you from defects, performance issues, and unexpected failures. Without reliable warranty coverage, costly repairs or premature replacements could reduce the return on your solar energy system.
For homeowners in New Jersey, where heavy snow, seasonal storms, and high winds regularly test rooftops, having a strong warranty is especially important. Understanding what solar warranties cover, how long they last, and which conditions can void them allows you to make confident, cost-effective decisions. At American Home Contractors, we’ve helped families across North and Central NJ, from Morristown to Summit and Short Hills, navigate warranty terms and choose the right solutions so both their solar panels and roofing systems remain fully protected for decades.
What Is a Solar Panel Warranty?
A materials warranty is a guarantee provided by the manufacturer or a third-party company that protects your system from defects or underperformance. It ensures panels continue to function as promised for decades and provides coverage if something goes wrong.
There are two main types:
- Product Warranty: Covers defects in materials or workmanship, usually lasting 10–25 years.
- Performance Warranty: Guarantees panels will produce a certain percentage of their original output after a set period (for example, 90% after 10 years, 80% after 25 years).
Some installers also offer a good solar panel warranty along with workmanship warranties to cover labor and roof penetrations, adding another layer of protection.
Types of Solar Warranties Explained
When reviewing warranties, it’s important to understand the categories. Each one, including product and performance warranties, addresses different risks and provides varying levels of protection.
| Warranty Type | Typical Term | What’s Covered | What’s Not Covered |
|---|---|---|---|
| Product Warranty | 10–25 years | Manufacturing defects, panel failure | Weather damage, misuse, and poor maintenance |
| Performance Warranty | 25–30 years | Guaranteed energy production | Degradation beyond guaranteed limits |
| Workmanship Warranty | 1–10 years | Installation quality, roof penetrations | Natural wear, storms, fire |
| Extended Warranty | Up to 30 years | Parts + labor, shipping, monitoring | Added cost may not cover all issues |
This breakdown highlights why it’s essential to read the fine print. Comprehensive warranties provide broader coverage and extra peace of mind, especially for NJ homeowners dealing with challenging weather conditions.
How Long Do Solar Panel Warranties Last?
Most manufacturer warranties for solar panels are designed to last decades, matching the expected lifespan of high-quality equipment.
- Product warranties typically range from 10 to 25 years, depending on the manufacturer.
- Performance warranties often extend up to 25 or 30 years, guaranteeing 80–90% of the original output after that time.
- Extended or insurance-backed warranties can add additional coverage, sometimes reaching 30 years.
For homeowners in climates like New Jersey, where snow and ice put stress on panels and racking systems, longer warranty periods can protect against early system failures.
What Do Solar Warranties Cover and What Don’t They?
Solar warranties may sound comprehensive, but they don’t cover everything, including a power warranty. Most warranties include:
- Defects in materials or workmanship.
- Panels that fail prematurely.
- Performance guarantees are tied to long-term energy production.
But common exclusions include issues that product warranties cover issues :
- Labor costs for removing or reinstalling panels.
- Roof damage from penetrations unless covered by workmanship warranty.
- Shipping fees for replacement parts.
- Environmental damage, such as hail, fire, or flooding, unless explicitly stated.
What Can Void a Solar Panel Warranty?
Understanding what voids your warranty is just as important as knowing what it covers. Warranties can be voided if:
- Panels are installed by non-certified contractors.
- Non-approved flashing or mounting hardware is used.
- The system is altered or repaired without authorization.
- Maintenance is neglected, such as failing to clear debris or snow buildup.
By choosing professional, certified installation of solar equipment , homeowners can protect themselves from warranty disputes and ensure long-term system reliability.
Are Solar Warranties Transferable If You Sell Your Home?
For many homeowners, a transferable warranty adds value when selling a property. Most manufacturers allow warranties to be transferred, but some require registration or transfer fees. Third-party warranties are often easier to transfer, making them attractive to buyers.
In New Jersey’s competitive real estate market, a transferable warranty can boost resale value by assuring potential buyers that the solar system will continue to perform for decades.
Solar Warranties for Inverters, Batteries, and Accessories
Solar panel warranties don’t cover every piece of equipment in your system. Each component usually has its own warranty:
- Inverters: 10–15 years, though premium models may offer extended options.
- Batteries: Often 10 years or based on usage cycles (e.g., 6,000 cycles).
- Racking systems: Typically 10–20 years, covering mounting hardware.
Because warranties vary by component, it’s critical to review the coverage for the entire system, not just the panels.
How to Compare Solar Panel Warranties Before You Buy
Not all warranties are equal. When evaluating your options, use this checklist:
- Warranty length: Check both product and performance coverage.
- Coverage details: Look for labor, shipping, and roof penetration coverage.
- Exclusions: Review the fine print to see what’s not included.
- Transferability: Ensure the warranty can move to a new homeowner.
- Provider strength: Confirm whether the warranty is backed by a manufacturer or a third-party company.
Benefits of Professional Installation for Warranty Protection
Professional installation doesn’t just guarantee quality workmanship; it also safeguards your warranty. Certified installers ensure panels are mounted according to manufacturer requirements and local building codes. This prevents issues that could void warranties and ensures that both your roof and solar investment remain protected.
American Home Contractors combines decades of roofing experience with solar installation expertise, giving NJ homeowners a trusted partner for long-term warranty coverage. With more than 8,000 satisfied clients, our certified crews provide peace of mind that your home and solar investment are in expert hands.
Conclusion
A solar panel warranty is more than a piece of paper; it’s the safeguard that ensures your investment in clean energy pays off for decades, taking into account the degradation rate . By understanding coverage types, exclusions, and transfer options, homeowners can make informed decisions and avoid costly surprises.
If you’re considering solar panels or want to be sure your system is fully protected under a strong warranty, American Home Contractors can help. From Morristown to Short Hills, we’ve been the trusted choice for roofing and solar solutions across North and Central NJ for decades. Contact us today to schedule a consultation and see how the right solar panel warranty can safeguard your investment and maximize long-term value.
FAQs
What is the solar panel product warranty?
A solar panel product warranty covers defects in materials or workmanship, typically lasting 10–25 years. It ensures panels are free from factory flaws and protects homeowners from premature equipment failure.
What is the lifespan of a solar panel?
Most solar panels last 25–30 years with proper care. Even after warranties expire, panels may still produce electricity, though at reduced efficiency due to normal degradation.
What happens to solar panels after 10 years?
After 10 years, solar panels usually still produce close to 90% of their original power output if covered by a performance warranty. Their efficiency gradually declines over time but remains effective for decades.
How long is a warranty on solar panels?
Most solar panels include a 10–25 year product warranty and a 25–30 year performance warranty. Extended or insurance-backed warranties can extend coverage even further, protecting your system for up to 30 years.