Simon Prüller Declining Quality in New PV Modules: Why Quality Checks Are Crucial In recent years, a concerning trend has emerged in the photovoltaic industry: the quality of many new PV modules is declining. According to a study by the Fraunhofer Institute for Solar Energy Systems... Neumodulqualität Photovoltaik PV-Modulprüfung Qualitätsprüfung PV-Module ROI maximieren May 27, 2025