Yingli Green Energy says its multicrystalline PV modules have passed the potential induced degradation (PID) test conducted by Intertek Group PLC. This test was conducted to assess the power output of the company's multicrystalline PV modules under severe conditions of high voltage, high temperature and high humidity.
According to the test results, Yingli Solar modules ranked at the top of the class, the company adds; the power degradation of Yingli Solar modules was lower than 1%. Intertek further tested Yingli Solar modules for a duration of 96 hours and found that the modules were still below the 1% degradation level.
