DAS Solar Reimagines PV Reliability with Steel-Framed Modules

As the global energy landscape expands into harsher terrains and more unpredictable climates, solar systems are being tested like never before. From the typhoon-prone coasts to vast desert regions reshaped by sand-control PV projects, extreme weather has become the new norm. Meanwhile, larger wafer formats and thinner cells are pushing structural limits. Under the combined challenges of high winds, heavy snow, and corrosion, traditional aluminum frames are reaching their performance ceiling.

In response, DAS Solar has introduced its high-strength steel-framed module, engineered to deliver exceptional durability, load-bearing capacity, and economic efficiency. With advanced materials, self-healing corrosion resistance, and optimized structural design, it provides a comprehensive answer to reliability challenges across the full life-cycle of solar systems.

Built for Extremes: Superior Mechanical Strength Beyond Aluminum

In environments defined by high winds, heavy snow, and abrasive sandstorms, mechanical resilience is paramount. DAS Solar's steel-framed module uses a zinc-aluminum-magnesium-coated high-strength steel substrate that delivers 75% higher yield strength and 110% higher tensile strength compared to traditional aluminum frames. As a result, overall resistance to wind and snow loads increases by up to 50%.

This strength translates into unmatched stability across extreme conditions. In high-wind zones, the frame maintains module alignment and prevents structural deformation. In snow-heavy regions, superior flexural rigidity prevents bending or cracking even under thick accumulation. As module sizes continue to grow, the enhanced frame stiffness eliminates microcrack risks caused by structural stress, ensuring consistent long-term performance.

The result is a new benchmark for structural stability and deformation resistance especially for projects in desert, coastal, and high-altitude regions, offering investors greater assurance of reliable energy output.

Smart Durability: Self-Healing Corrosion Resistance for Long-Term Performance

Strength alone isn't enough, durability defines long-term value. DAS Solar's steel frame features an advanced zinc-aluminum-magnesium coating that delivers outstanding corrosion resistance and a unique self-healing effect. When the surface is scratched or cut during transportation or installation, magnesium and zinc elements react with moisture in the air to form a dense MgZn₂ protective film, effectively sealing exposed areas and preventing further corrosion—much like a wound naturally healing over.

This technology ensures exceptional longevity even under harsh environmental stress such as salt spray, high humidity, and windblown sand. The module has passed static and dynamic mechanical load tests exceeding IEC standards by more than threefold and has demonstrated outstanding resistance in ammonia, salt-mist, damp-heat, and thermal cycling tests. Its proven resilience guarantees stable operation in extreme outdoor environments, truly delivering built-to-last reliability.

High Value, Low Cost: A New Standard for Life-Cycle Efficiency

Beyond strength and endurance, the high-strength steel frame also redefines cost-effectiveness. Its elastic clamping design simplifies installation, shortens project timelines, and reduces labor and maintenance costs. Excellent electrical conductivity eliminates the need for additional grounding, while superior corrosion resistance minimizes long-term O&M expenditures. Together, these advantages maximize project ROI, making every kilowatt-hour more efficient and profitable.

Open Back, Higher Output: Boosting Bifacial Power Generation

At the heart of every solar innovation lies power generation efficiency. DAS Solar's steel-framed module adopts a backside-open design that eliminates the conventional “C-side” obstruction, increasing the bifacial gain by approximately 2.5%. By allowing more reflected and diffused light to reach the cells—especially in high-reflectivity conditions such as snowfields or desert sands—the design delivers measurable performance advantages. In a simulated 100MW solar project in Ningxia, this design could increase total generation by around 0.15%, equivalent to an additional 7.46 million kWh over 30 years.

In an era defined by efficiency and reliability, DAS Solar's high-strength steel-framed module stands as a new example for solar infrastructure. With a steel backbone built for resilience, the module combines unmatched durability, superior economics, and enhanced generation performance, ensuring long-term stability and higher returns for projects across even the harshest environments.