Results of 12 years of module qualification to the IEC 61215 standard and CEC specification 503

Since 1981 the European Solar Test Installation of the European Commission's Joint Research Centre id performing qualification tests on terrestrial photovoltaic (PV) modules. Since 1990, the test standard applied is IEC 61215, or it's direct predecessor, specification 503. The paper describes the results of more than 125 module types tested, focusing on the reliability and lifetime.