When investing in solar panels, understanding the warranty is crucial to ensure you’re protected and can get the most out of your system. A solar panel warranty is a guarantee provided by the manufacturer, covering defects, performance, and the longevity of the panels. In this article, we’ll explore everything you need to know about solar panel warranties, including what’s covered, what’s not, and how to make the most of your warranty.
Types of Solar Panel Warranties
There are two main types of warranties that solar panel manufacturers offer:
1. Product Warranty
This warranty covers defects in materials or workmanship and protects you in case your panels are damaged or malfunction due to manufacturing issues.
- Coverage: This typically lasts between 10 to 25 years.
- What’s Covered: It includes issues like manufacturer defects, performance issues, or physical damage from poor construction.
- Example: If a panel is cracked, the manufacturer will replace or repair it at no extra cost.
2. Performance Warranty
This warranty ensures your solar panels will continue to perform efficiently over the years, typically guaranteeing that they will still generate a certain percentage of their original output after a set number of years.
- Coverage: This usually lasts for 25 years or more.
- What’s Covered: It guarantees that your panels will maintain at least 80% of their original power output after 25 years.
- Example: If your panel degrades faster than expected and falls below the agreed-upon performance level, the manufacturer will either replace the panels or provide compensation.
What’s Covered Under a Solar Panel Warranty?
- Defective Materials and Workmanship: If your panels are found to be defective in material or craftsmanship, the warranty will cover the costs of repairs or replacement.
- Performance Degradation: Solar panels naturally degrade over time, but a performance warranty protects you if degradation happens faster than expected. Generally, solar panels lose 0.5% to 1% of their efficiency each year, so the performance warranty guarantees a minimum power output for up to 25 years.
- Manufacturer’s Fault: If a panel fails to meet the manufacturer’s performance specifications due to a manufacturing defect, the warranty covers the cost of repairs or replacement.
What’s Not Covered by a Solar Panel Warranty?
While solar panel warranties offer protection, there are limitations to what they cover:
- Normal Wear and Tear: Over time, solar panels will naturally degrade, but this is typically not covered under the warranty unless the performance falls below the specified threshold.
- External Damage: Physical damage caused by external factors like storms, falling debris, or improper installation is often excluded from warranties.
- Improper Maintenance or Installation: If the installation or maintenance of the solar panels was not done according to the manufacturer’s instructions, this could void the warranty.
- Damage from Fire or Theft: Warranties usually do not cover damage caused by fire, theft, or vandalism.
How to Make the Most of Your Solar Panel Warranty
To ensure you fully benefit from your warranty, here are a few tips to keep in mind:
1. Regular Maintenance
Ensure your solar panels are maintained and cleaned regularly, as dirt or debris can affect their performance. However, be sure to follow the manufacturer’s guidelines for cleaning to avoid voiding the warranty.
2. Professional Installation
Always have your solar panels installed by a certified professional. Incorrect installation can lead to damage, which might not be covered under the warranty.
3. Keep Documentation
Retain all purchase and installation records, including the warranty certificate. Having proper documentation is important if you need to make a claim.
4. Monitor Your System
Regularly monitor the performance of your solar panels. If you notice a significant drop in output, it’s best to contact the manufacturer immediately to address any potential issues before the warranty period ends.
How to File a Solar Panel Warranty Claim
If you need to make a claim, follow these steps:
- Contact the Manufacturer: Reach out to the manufacturer or installer to report the issue. Many companies have a dedicated warranty claim process.
- Provide Documentation: Provide proof of purchase, installation, and any system performance data showing a drop in efficiency.
- Have an Inspection Done: In some cases, the manufacturer may require an inspection of the panels to verify the issue.
- Claim Processing: Once the claim is validated, the manufacturer will either repair, replace, or compensate you for the defective panels.
Conclusion: Solar Panel Warranties Offer Peace of Mind
Investing in solar panels is a smart decision for both your wallet and the environment. However, understanding the warranty coverage is essential to ensure you’re protected throughout the lifespan of the system. Whether it’s a product warranty covering defects or a performance warranty ensuring long-term efficiency, solar panel warranties provide much-needed peace of mind.
To make the most of your warranty, ensure proper installation, regular maintenance, and prompt action if any issues arise. By doing so, you can enjoy the benefits of renewable energy for years to come without worrying about unexpected repair costs.


