Performance Loss Rates of PV systems of Task 13 database

In this work we present an overview of the performance evolution of PV systems from several locations in the U.S. and in Europe. The data are collected within the IEA PVPS Task 13 performance database. The performance loss rate is calculated based on the performance ratio, which was provided for all systems. A study of performance losses depending on the prevailing climatic conditions and the technologies has been carried out. The systems have performance losses with the highest distribution between -1.0 and -0.5%/a.