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Annual Degradation Rates of Crystalline Silicon Photovoltaic Modules in Different Climatic Zones in China
H. Song, P. Xu, Z. Wu, Y. Xia, M. Yun
Degradation, Reliability, Module, Multi-Crystalline
Photovoltaic Modules and BoS Components
Subtopic: PV Module Design, Manufacture, Performance and Reliability
Event: 35th European Photovoltaic Solar Energy Conference and Exhibition
Session: 5CV.1.17
1189 - 1191
ISBN: 3-936338-50-7
Paper DOI: 10.4229/35thEUPVSEC20182018-5CV.1.17
0,00 EUR
Document(s): paper, poster


Module degradation rates in different climatic zones are investigated in this work. Three outdoor PV systems are installed in different places in China. Modules are uninstalled and moved to a local laboratory to do the STC I-V measurements every three months. Degradation rates differ due to the different climatic features, and also the module types. The environment factors affect degradation rate in varying degrees. Glass-backsheet module is sensitive to UV, while dual-glass module is sensitive to a damp heat environment. Dual-glass module has a minor degradation rate than glass-backsheet module in the three sites. Energy output of module is affected by the power degradation. Electricity/power gain is related to the less degradation rate.