DNV GL Releases 2016 PV Module Reliability Scorecard
Our recently released second edition of the PV Module Reliability Scorecard, reports on the reliability performance of 19 PV module manufacturers. This free report is downloadable here for those interested in PV module performance.
The Scorecard compares results obtained by the different manufacturers in testing and goes well beyond industry standards. This includes 800 cycles of Thermal Cycling (4 times IEC), 3,000 hours of Damp Heat (3 times IEC), 30 cycles of Humidity Freeze (3 times IEC), a sequence including 1,000 cycles of Dynamic Mechanical Load, 50 Thermal Cycles and 10 cycles of Humidity Freeze, and a PID test of 600h at 85°C and a relative humidity of 85%.
DNV GL found that many module manufacturers perform well across all tests. For example, 8 manufacturers degraded less than 3% after 4 times the IEC duration in Thermal Cycling (the IEC pass/fail criteria for 200 cycles is 5% degradation).
Roughly 55 – 60% of top group modules were manufactured in China. This is roughly equivalent to the ratio of Chinese module participation in the full PV Module Reliability Scorecard. This demonstrates that manufacturing location is not a good general proxy for reliability. Similarly, DNV GL found no obvious correlation of the performance in test with their respective volume shipment in 2015, showing that the size of the company is also not a good predictor of reliability.
DNV GL PVEL developed our Product Qualification Program (PQP) to support the downstream solar community in 2013. The objectives of the program are twofold: First, to provide PV equipment buyers and PV power plant investors with independent and consistent reliability and performance data to help implement effective supplier management process. Second, to provide module manufacturers focused on the reliability of their products with the visibility they need to be successful in this competitive market. The DNV GL PQP is widely accepted in the industry both by manufacturers and downstream players. More than 150 downstream players are collaborating with DNV GL on procurement decisions, while DNV GL PQP has been applied more than 45 times on different module models.
Module purchase decisions may benefit from a side-by-side comparison of laboratory test results. DNV GL is pleased to provide this data to the industry in order to increase the reliability of PV components and to reduce the technology risk of PV investments.
For more information, please visit our web page.