Yingli Green Energy Holding Company Limited today announced that its multicrystalline PV modules successfully passed the Potential Induced Degradation (PID) test conducted by Intertek Group plc ("Intertek"). This test was conducted to assess 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.

Intertek is a leading provider of quality and safety solutions across a wide range of industries worldwide. The PID test was conducted under stringent conditions of 85 degrees Celsius, 85% relative humidity, and 1,000 volts of system voltage bias for a duration of 48 hours. The test results showed that 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.

"We are very glad to see the outstanding performance of our modules on the PID test conducted by Intertek," said Mr. Liansheng Miao, Chairman and Chief Executive Officer of Yingli Green Energy. "The test results highlight the high quality of our products, which has been our firm commitment to customers. We expect this excellent PID test result to further strengthen customers' confidence in our products and enhance our leadership position in the solar industry."

"More and more PV manufacturers are pursuing better product quality and performance, and Yingli Green Energy is highly committed in this regard," said Frank Pan, President of Intertek Commercial & Electrical Asia Pacific. "Intertek plays an important role by utilizing its expertise and experience in helping PV manufacturers to enhance their product quality and sharpen their competitive edges."