Performance and degradation in silicon PV systems under outdoor conditions in relation to reliability aspects of silicon PV modules - Summary of results of COST Action PEARL PV

This paper presents the main results of COST Action PEARL PV, aiming at finding connections between the observed performance of monitored PV systems and degradation causes and failure modes according to literature with a focus on the most dominant technology among installed PV modules, namely silicon PV. It is found that there there exists a great potential for performance improvements, though in practice it is difficult to identify exact causes for failure and underperformance.