Degradation & Warranty
Analysis of warranties and degradation rates for long-term performance
-
Best Product Warranty
-
Avg Product Warranty
-
Lowest Annual Degradation
Product Warranty Distribution
Performance Warranty Distribution
First Year Degradation Distribution
Annual Degradation Distribution
Warranty Comparison by Manufacturer
| Manufacturer | Avg Product Warranty | Avg Performance Warranty | Avg Annual Degradation |
|---|
Top 20 by Warranty
| # | Panel | Product | Perf. |
|---|
Lowest Degradation Panels
| # | Panel | Annual | Yr 25 |
|---|
Product vs Performance Warranty
Product Warranty (Materials/Workmanship): Covers manufacturing defects, material failures, and workmanship issues. Typically 10-25 years. If the panel fails due to a defect, it's replaced or repaired.
Performance Warranty: Guarantees minimum power output over time (usually 80-87% after 25-30 years). Covers gradual degradation. If output drops below guarantee, manufacturer provides compensation or replacement.