Chapter 2 · Warranties and Maintenance
2.1 Three warranty layers, none optional
| Warranty type | Who provides it | Typical term | Importance |
|---|---|---|---|
| Product Warranty | Equipment manufacturer | 10–25 years | Medium |
| Performance Warranty | Panel manufacturer | 25 years (degradation ≤ ~12%) | Medium |
| Workmanship Warranty | Installer | ~10 years | High |
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