Astronergy & TÜV Rheinland start IEC 63279 PV module tests in Germany

Astronergy, a China-based PV module manufacturer, has signed an agreement with Germany’s TÜV Rheinland at Intersolar Europe 2025 to begin testing under IEC TR 63279. According to TÜV Rheinland, the testing protocol includes sequential and combined stress conditions such as high temperature, humidity, UV exposure, mechanical load, and potential-induced degradation. These tests are intended to identify failure modes and assess long-term durability beyond IEC 61215 and 61730 certifications, and derisk PV modules for investors. Astronergy has submitted its module samples for testing, with initial results expected by August 2025. The complete test cycle is scheduled to conclude in the fourth quarter of 2025. Although IEC TR 63279 is not mandatory, it aligns with reliability expectations from utility-scale developers, EPCs, and institutional investors, and supports alignment with emerging international benchmarks beyond existing IEC certifications.