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Recently, a hail-resistant module from DMEGC Solar, currently in the research and development phase, successfully passed CGC’s 65mm extreme hail impact test. This experimental module, part of DMEGC’s Infinity Series development line, demonstrates the company's leading R&D and manufacturing capabilities in withstanding harsh weather conditions. This experimental achievement makes DMEGC Solar the first module manufacturer in the PV industry to pass this enhanced hail test by CGC.

With the increasing frequency of extreme weather events and the potential risks brought by cost reduction efforts and thinner glass in modules, there is a growing demand worldwide, especially in Europe, the U.S., and China, for modules with enhanced  hail resistance. 

Anticipating this need, DMEGC Solar identified the common industry pain point of insufficient hail resistance and has  invested in continuous R&D to address this challenge. DMEGC continues to research and develop  the Infinity Series hail-resistant modules, with the goal of providing more reliable and durable photovoltaic solutions in the future.

The hail test simulates the impact and strike effects of hail on photovoltaic modules under natural conditions. During the test, the appearance and structure of the modules are monitored for damage. After the test, the modules are inspected for cracks, breakage, or damage to the cells, followed by a comparison of performance  parameters and electroluminescence (EL) images.

According to  IEC standards, conventional hail tests use hailstones with a diameter of 25mm, weighing 7.53g, and impacting at a speed of approximately 23m/s. This often fails to simulate the extreme conditions that modules may encounter in real-world environments. The hail load test on the experimental module was based on the standards and requirements of the IEC 61215  series, but used huge hailstones with a remarkable diameter of 65mm—equivalent to the size of a tennis ball—each weighing 130g, or 17 times the weight of standard 25mm hailstones. These hailstones impacted the module surface at a speed of 37m/s (equivalent to 133.2km/h), with kinetic energy 45 times that of the 25mm hailstones.

Despite these severe conditions, the test module remained intact, with no visible damage. The EL test revealed no microcracks, defects, or moisture leakage, and the power attenuation was only about 0.53%, significantly lower than the IEC standard’s requirement of 5%, showcasing exceptional impact resistance.

The module used in this test incorporated reinforced glass and backsheet, and DMEGC Solar  continues to explore different materials and technologies to further improve hail resistance. In the future, DMEGC will release a series of modules with varying levels of hail resistance, designed to meet the needs of different risk scenarios and application environments.

China General Certification Center (referred to as "CGC") is a leading technical service organization in China, specializing in standard development, testing, inspection, certification, technical and industrial research services. CGC's business scope covers renewable energy, climate change and sustainable development, industrial equipment and intelligent manufacturing, railway transportation , consumer goods, smart  technology and information security and other fields, providing services for all customers in the industry chain.