Potential Induced Degradation (PID)

 

Potential Induced Degradation, happens when the module’s voltage potential and leakage current drive ion migration (accelerated with humidity, temperature and bias) within the module,degrading the module’s power output capacity.

The PV system and environment interact to cause PID. The conditions necessary for the occurrence of PID involve

- environmental factors
- the system
- the module
- the cells