When I decided to invest in solar energy for my home, I quickly learned that solar panel warranties are more than just paperwork they’re long-term protection for a multi-decade investment.
A solar system that underperforms forces your household to draw extra power from the grid, which cuts into your savings.
A solid warranty ensures that my solar panels maintain reliable performance for decades, protecting my return on investment and providing peace of mind.
Types of Solar Panel Warranties
Most solar panels include two primary warranties: a product warranty and a performance (or power) warranty. Many installers also provide additional coverage for labor and installation.
Product Warranty
Coverage
Defects in materials or workmanship.
Typical Length
10–25 years, with some premium manufacturers offering extended protection.
Why It Matters
If a panel fails because of a manufacturing issue, the product warranty pays for replacement equipment.
Performance (Power Output) Warranty
Coverage
Guarantees a specific level of energy production over time.
Typical Length
25 years.
Details
Usually promises at least 90% of original output at year 10 and around 80% at year 25.
Benefit
Ensures your panels degrade at an acceptable rate, so your savings stay on track.
Installation Warranty
Coverage
Problems related to the installation process itself—such as roof leaks or wiring issues.
Typical Length
1–2 years, though some installers extend this up to 10 years.
Other Key Warranties
Inverter Warranty
Usually 5–10 years.
Battery Warranty
Covers normal degradation of solar batteries over time.
Making a Warranty Claim
If I ever need to file a solar panel warranty claim, I start by contacting my installer. Many issues can be diagnosed remotely, but sometimes a technician needs to inspect the system in person.
The process varies by manufacturer: some allow me to file a claim directly, while others require the installer to submit all paperwork.
Common Exclusions
Even the best solar panel warranties have exclusions. Typical exceptions include damage from natural disasters, improper installation by a non-certified technician, or neglect such as failing to clean panels regularly. Reading the fine print protects me from unpleasant surprises later.
Factors to Consider Before Choosing a Warranty
When I compare warranties from different manufacturers, I always evaluate.
Company Stability
A 25-year warranty is only as strong as the company backing it. I look for manufacturers with a proven track record and solid financials.
Ease of Claims
I prefer companies that let homeowners file claims directly, rather than going through multiple middlemen.
Transferability
If I sell my house, I want the warranty to transfer easily to the next owner to preserve the system’s value.
Bloomberg New Energy Finance (BNEF) and PV Evolution Labs (PVEL) publish lists of “bankable” solar companies, which helps me identify brands that are likely to honor their long-term commitments.
Understanding Extended Warranties
Some brands offer extended product or power warranties—sometimes up to 30 years—for an additional fee.
To qualify, I might need to choose a specific installer network or financing partner. While optional, these plans can be worthwhile if I plan to stay in my home for decades.
Frequently Asked Questions About Solar Panel Warranties
How long is a solar panel warranty?
Most panels come with a 25-year performance warranty and a product warranty of 10–25 years, depending on the brand.
How long will my solar panels actually last?
Solar panels typically have a life expectancy of 25–30 years. They continue producing electricity beyond that, but with gradual efficiency loss.
Do warranties cover labor and shipping?
Not always. Some manufacturers cover replacement parts but leave labor and shipping costs to the homeowner. I always confirm these details before signing.
My Final Thoughts on Solar Panel Warranties
Choosing solar energy was one of the best financial decisions I’ve made, but only because I paid close attention to solar panel warranties.
They protect my system’s performance, safeguard my investment, and ensure decades of clean energy production.
Before purchasing, I recommend reviewing every warranty’s product coverage, power guarantee, labor terms, and transferability.
Based on industry rankings, companies like Panasonic, REC, and Qcells currently offer some of the strongest warranties.
Whatever brand you select, understanding the details of your solar panel warranty will give you confidence that your system will deliver reliable savings for many years to come.
