Understanding Potential Induced Degradation (PID) in Solar Modules — And Why Prevention Begins in Manufacturing
As solar installations scale in size and system voltages increase, conversations around module reliability are becoming more precise. One issue that continues to surface in technical discussions is Potential Induced Degradation, commonly referred to as PID. Unlike gradual ageing, PID can cause noticeable performance loss within a relatively short period if conditions are favourable for it to occur. It is not a structural failure or visible mechanical defect. It is an electrical phenomenon that develops silently under specific environmental and system conditions.
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