Solar Panel Degradation Calculator

Calculate the expected degradation and performance loss of your solar panels over time. This helps you plan for long-term system performance and maintenance.

Select your solar panel technology type
Enter the original power rating of your panel
Enter the year the panels were installed (2000 - 2025)
Select your climate zone
Select your maintenance practices
Enter the number of years to project

Typical Degradation Rates by Panel Type

Panel Type Typical Annual Degradation Expected Lifespan Warranty Period
Monocrystalline 0.3-0.5% 30-35 years 25-30 years
Polycrystalline 0.4-0.6% 25-30 years 20-25 years
Thin-film 0.5-0.8% 20-25 years 15-20 years

Factors Affecting Degradation:

  • Panel technology and quality
  • Environmental conditions
  • Temperature variations
  • UV exposure
  • Maintenance practices
  • Installation quality
  • Electrical stress

Maintenance Tips:

  • Regular cleaning to remove dirt and debris
  • Periodic inspection for physical damage
  • Monitoring system performance
  • Checking electrical connections
  • Protecting against extreme weather
  • Maintaining proper ventilation
  • Documenting performance changes