Solving the Roof-PV Interface Challenge: Enabling a “Flexible Symbiosis”
The method of connecting PV arrays to a roof is paramount to the system's safe implementation. While factory roofs require uniform load distribution, traditional point-fixing clamps create localized stress points. Thermal expansion and contraction across seasons, combined with extreme weather, can lead to roof deformation, cracks, and in severe cases, dual damage to both the roof structure and the PV installation.
The true solution lies in transforming PV from a mere rooftop “add-on” into an integrated “guardian.” LONGi has pioneered a breakthrough with its building-friendly rooftop PV technology. The LONGi Hi ROOF S C&I Metal rooftop PV solution features an innovative design combining ultra-high-efficiency modules with a non-penetrating bonding system. This approach protects vulnerable areas of the original roof membrane, evenly distributing the load to the roof's primary structure to prevent localized stress damage—a fundamental shift from “rigid fixation” to “elastic integration.”
Critically, this system is already proven in the field, with deployment in real-world projects exceeding 1 GW, fully validating its reliability.
Addressing Core Reliability Concerns: Upholding Factory Building Integrity
For industrial operators, the factory roof is a “safety cornerstone” for uninterrupted production. Safety requirements vary drastically across industries and geographies. Sectors like automotive manufacturing, high-precision industry, and food processing demand superior roof airtightness, while coastal facilities require robust resilience against typhoons. Achieving the dual objectives of “safety + power generation” necessitates a PV system with proven wind and fire performance.
The LONGi Hi ROOF system has undergone rigorous testing, demonstrating a more than 23% improvement in wind resistance compared to the original roof. The LONGi ROOF BIPV solution can withstand Category 17 typhoons, enabling reliable deployment even in typhoon-prone regions—a testament to the combined engineering strength of the LONGi and CENTERINT brands. For fire safety, the solution incorporates the innovative weak-conduction design of HPBC 2.0 cells, effectively mitigating fire risks caused by potential hot spots.
Transcending the Aesthetics Compromise: Pioneering Architecture's Green Future
As the architectural quality of industrial buildings rises, companies increasingly look beyond economics, valuing the aesthetic and brand image benefits of PV systems as visible symbols of their green commitment.
The world's first LONGi ROOF BIPV product featuring HPBC 2.0 cells enables a truly integrated roof-PV design. In projects like the Boao Zero-Carbon Park, the PV system forms a “green landmark,” with the project earning accolades such as the “Top 10 Innovations in Green and Low-Carbon Development in China's Urban and Rural Construction.”
For commercial and landmark buildings, architectural expression is paramount. LONGi BRIGHT, hailed as “colorful building materials that generate electricity,” offers customized colors and textures for seamless visual integration. At landmarks including the Beijing Workers' Stadium and Shenzhen World Exhibition & Convention Center, this “architecture + photovoltaic” model fulfills green energy needs while enhancing the building's artistic appeal, creating a true win-win for sustainability and design.
**LONGi BRIGHT Project at Beijing Workers Stadium
*LONGi BRIGHT Project at Shenzhen World Exhibition & Convention Center
At the BAU China 2025 International Construction Technology Expo, LONGi showcased these advancements in the “Fifth Facade” exhibition area. The evolution from choosing between “revenue or safety” to achieving a “triple upgrade in protection, power generation, and aesthetics” underscores how building-friendly PV innovation is redefining the value proposition of C&I rooftop and BIPV. For forward-thinking enterprises, BIPV is no longer just a supplementary power source; it has become a core asset for ensuring operational safety and elevating brand value. This represents the true essence of green transformation in the era of carbon neutrality.
