| Document | Typical subject | What it does not automatically cover |
|---|---|---|
| Module product warranty | Manufacturing or material defect in a module | Low output caused by shade, dirt, design or other equipment |
| Module performance warranty | Maximum degradation or minimum output under stated test conditions | Your household bill, annual rupee savings or whole-system uptime |
| Inverter/optimizer warranty | Covered failure of that device | Modules, mounting, wiring workmanship or grid outages |
| Installer workmanship warranty | Installation defects such as specified wiring, mounting or sealing work | A manufacturer’s internal component defect |
| Insurance or service plan | Only the named accidental, weather, theft or maintenance events | Anything excluded, depreciated or outside the policy period |
Duration alone is a poor comparison. A long performance warranty with a narrow remedy can be less useful than a shorter product warranty with clear labour and logistics coverage.