Solar Panel Efficiency and Degradation: Understanding the Numbers
First-Year Degradation and Annual Degradation
WEB 460W Output 236 Efficiency
First-year Degradation: 0.35%
Annual Degradation from Year 2-30: 0.35%
WEB AIKO-A-MAH54Mb 460W Output 236 Efficiency
First-year Degradation: Not specified
Annual Degradation from Year 2-50: 0.35%
WEB NEOSTAR 2S Dual-Glass 440W-460W
First-year Degradation: Not specified
Annual Degradation from Year 2-30: Not specified
WEB AIKO N-Type ABC Mono-glass Module 435W-460W
First-year Degradation: Not specified
Annual Degradation from Year 2-30: Not specified
Efficiency: What It Means
Solar panel efficiency refers to the percentage of sunlight that is converted into electrical energy. Higher efficiency panels produce more electricity for the same amount of sunlight exposure, reducing the space required and overall system costs.
Degradation: The Gradual Loss of Efficiency
Solar panels naturally degrade over time, gradually losing efficiency. This degradation is caused by various factors, including temperature fluctuations, ultraviolet radiation, and moisture.
Understanding Warranties
Solar panels typically come with warranties that cover both power output and efficiency. Linear performance warranties guarantee a specific level of output for a certain number of years, while annual degradation warranties specify the expected loss of efficiency over time.
Choosing the Right Solar Panels
When selecting solar panels, consider both efficiency and degradation rates. Higher efficiency panels may have a higher initial cost but can generate more electricity over time. Understanding degradation rates helps determine the panel's longevity and overall performance.
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