Solar panel manufacturers typically offer two types of warranties:
Product Warranty: This warranty covers defects in materials and workmanship for a specified period, typically 10-25 years. It ensures that the panels will be free from manufacturing defects that affect their performance.
Performance Warranty: This warranty guarantees a minimum level of power output from the panels over a specified period, usually 25 years. It ensures that the panels will maintain a certain level of efficiency over their lifetime.
The length and coverage of these warranties can vary by manufacturer and panel type. It's important to review the warranty details carefully before purchasing panels.