As typhoon seasons grow increasingly intense, conventional PV mounting structures are struggling to withstand the severe impacts of extreme weather. Damage from toppled structures, dislodged modules, and deformed supports has become a recurring issue, posing risks to solar assets in coastal and high-wind regions. Against this backdrop, DAS Solar's flexible mounting system has emerged as a resilient solution engineered to excel under pressure. With advanced structural design and outstanding reliability, it has proven to be a robust line of defense, standing tall where traditional systems fail.
In September 2024, Typhoon Yagi—one of the strongest autumn typhoons on record—made landfall in Hainan, with wind speeds reaching 62 m/s (equivalent to level 17) and a central pressure of 915 hPa. The 64-hour storm caused widespread damage across solar installations in Hainan and Guangdong provinces. Conventional PV structures suffered significant losses, and storm surges undermined ground stability. Compounding the destruction were salt-laden winds accelerating corrosion, water accumulation due to dense layouts, and the wind tunnel effect, which intensified wind pressure on modules and frames.
To address these vulnerabilities, DAS Solar developed a next-generation flexible mounting system designed to mitigate the destructive forces of typhoons. Unlike traditional rigid systems, DAS Solar's solution replaces purlins with high-tensile pre-stressed steel cables arranged in a spatial cable network structure. Dual steel cables in the east-west direction and a uniquely engineered inter-row wind-resistant stabilization system in the north-south direction provide multi-dimensional support. This setup enhances wind load resistance and structural damping, significantly improving system stability under high-stress conditions.
Validated through a series of rigorous tests, the flexible mounting system demonstrated exceptional performance. It has passed wind tunnel testing by Nanjing University of Aeronautics and Astronautics, showing a critical flutter wind speed exceeding 46 m/s, well above most real-world conditions. It also passed extreme climate testing in Xinjiang, enduring temperature fluctuations from -40°C to +40°C and simulated wind speeds up to level 17. Additional module-level testing confirmed the system's ability to reduce microcrack formation, a common risk in extreme weather.
The system's real-world resilience was proven during Typhoon Yagi. At the fishery complementary PV project just 50 kilometers from the storm's landfall point, DAS Solar's flexible mounting structure remained fully intact with zero damage reported. A post-typhoon inspection by TÜV Rheinland confirmed the modules passed visual and electroluminescence (EL) tests, further validating the system's field performance. The project owner commended the system's structural integrity and storm resistance, setting a new benchmark for coastal PV reliability.
Looking ahead, DAS Solar is advancing flexible mounting technology through intelligent and modular upgrades. Its latest generation of flexible tracking systems combines structural flexibility with smart adjustability. The system features dynamic module tilt capabilities to optimize solar angle tracking, boosting energy yield by over 10%. Meanwhile, mechanical simplicity has led to a 30% reduction in foundation requirements, lower failure rates, and enhanced site adaptability—especially in complex terrains or constrained environments.
As the industry transitions from volume-driven expansion to high-quality development, DAS Solar's flexible mounting system offers a robust solution that embodies the next phase of solar resilience. This innovation reflects a new approach to PV system design, which prioritizes durability, intelligence, and long-term return on investment, contributing a reliable and scalable solution to the evolving challenges of energy transition.
