Canadian Solar · panel
Canadian Solar — natural panel degradation
All solar panels degrade over time, and Canadian Solar panels are no exception. With an expected lifespan of 25 years, you should expect roughly 0.5–0.8% efficiency loss per year under normal conditions. However, panels in hot climates or with manufacturing defects can degrade faster.
Natural panel degradation is a known issue for Canadian Solar panels. This doesn't mean it will affect your system — but it's worth monitoring.
Natural panel degradation details
All solar panels lose efficiency over time at roughly 0.5–0.8% per year. Accelerated in extreme heat or poorly manufactured panels.
Self-check tip:
Compare current annual production to your system's first-year output. A decline beyond 1% per year may indicate accelerated degradation.
Brand lifespan
25 years
Warranty
25 years
Check your Canadian Solar system
Use our free Solar Loss Checker to estimate how much energy your Canadian Solar system may be losing.
Check my systemBased on conservative solar performance modelling and published degradation data
Updated April 2026 · Structured performance modelling
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