Trinasolar has announced that its latest n-type rooftop module, Vertex S+ Shield, has successfully passed the HW4 hail test, simulating hailstones with a diameter of 40 mm at high velocity — among the most demanding standards for PV modules in Europe.
The module also achieved the A+A fire safety classification under the IEC 61730 standard, highlighting its robust flame spread resistance for residential and commercial rooftop use.
Now in mass production, the Vertex S+ Shield is poised to become one of the most advanced and resilient products available for Europe’s distributed solar market.
While the HW4 hail test is not yet mandatory in Switzerland, it is widely expected to become a legal or insurance-driven requirement in the coming years. By achieving HW4 certification now, Trinasolar positions itself — and its customers — ahead of evolving regulations.
Despite using a lighter dual-glass structure (2.5 mm + 2.0 mm) compared to many competitors, the Vertex S+ Shield passed the test with full marks. This is a clear demonstration of the engineering quality and material resilience underpinning Trina’s product design. It ensures peace of mind for rooftop PV projects in hail-prone regions, particularly in Switzerland, northern Italy, southern Germany, and Austria.
“Extreme weather is no longer a rarity in Europe. For installers and developers, hail resistance is becoming a top priority,” said Gonzalo de la Viña, President Trinasolar Europe and Latin America. “With Vertex S+ Shield, we deliver the perfect solution that is both future-proof and field-proven.”