On March 16, 2026, at the PV EXPO in Japan, Jinko Solar Co.,Ltd. globally launched its Five-Star Fire-Resistant Modules, designed to meet the world's most stringent fire safety requirements and achieve the highest fire resistance rating. As photovoltaic systems become increasingly integrated with building structures, the fire resistance of modules has become a critical safety "lifeline" for high-density residential and commercial projects. Addressing the industry's toughest safety challenges, Jinko Solar leveraged its robust technological platform to introduce the Five-Star Fire-Resistant Modules, innovating at the fundamental level of material science. With advanced flame-retardant technology, these modules genuinely achieve: no ignition, no flame spread, anti-static properties, resilience against snow and wind, and resistance to short circuits caused by moisture penetration.

1. Highest Dual Class A Fire Rating: Establishing a New Safety Standard for Rooftop PV For buildings with high safety requirements, the fire resistance of rooftop modules directly determines project eligibility. Jinko Solar's Five-Star Fire-Resistant Modules have obtained IEC Class A certification and the North American UL 790 Type A certification, representing the pinnacle of fire performance in the photovoltaic industry. They are the only product in the industry to receive this dual Class A recognition. According to the UL 790 standard, achieving a Class A rating requires passing two rigorous tests: · Flame Spread Test: After ignition by an external source, flames must not spread more than 1.82 meters across the roof surface. · Burning Brand Test: A 12-inch by 12-inch (approximately 30cm x 30cm) burning brand is placed on the module surface, which must not burn through. In contrast, the more common Class C rating allows a flame spread limit of up to 3.9 meters and uses a significantly smaller 2-inch by 2-inch brand. Jinko's Class A certification means the modules can effectively block fire spread in real-world scenarios, providing crucial extra time for building firefighting efforts.

2. Comprehensive Flame-Retardant Material System: Building Safety from the Source The core of module fire resistance lies in the materials used. Jinko's Five-Star Fire-Resistant Modules, compliant with the IEC 61730-2:2023 standard, feature a full-chain flame-retardant system: · Key insulating materials achieve UL 94 V-0, the highest flame-retardant rating. Critical internal insulating and structural materials meet the V-0 standard, self-extinguishing within 10 seconds after flame removal without producing burning droplets. Components like junction boxes and connectors will not become ignition sources even under extreme operating conditions. · Polymer materials pass both needle-flame and glow-wire tests. All polymer materials, including backsheets, encapsulant films, junction box housings, and sealants, meet Glow-Wire Ignition Temperature (GWIT) requirements and pass the IEC 60695-11-5 needle-flame test. The burning duration does not exceed 30 seconds and does not ignite underlying layers. · The entire system complies with external building fire standards. As part of a rooftop installation system, the modules are tested with reference to external building fire standards, ensuring that both individual modules and the complete rooftop system possess Class A fire spread performance.

3. Anti-Arcing Design: Eliminating Potential Electrical Fire Risks Beyond passive flame retardation, Jinko's Five-Star Fire-Resistant Modules also innovate in active safety design. The modules utilize patented anti-arcing junction boxes and connection technologies, optimizing circuit design and contact resistance to fundamentally reduce the risk of DC arcing. Even during long-term high-voltage operation, they effectively suppress arc formation caused by poor contacts or aging—arcs can reach temperatures of thousands of degrees Celsius and are a primary cause of fires in PV systems. Jinko minimizes this risk through structural innovation.

4. Superior Mechanical Load Capacity: Reinforcing the Physical Safety Line In addition to exceptional fire resistance, Jinko's Five-Star Fire-Resistant Modules offer outstanding mechanical reliability, preventing safety hazards at the structural level. The modules have passed tests for 6000Pa frontal load and 4000Pa backside load, capable of withstanding snow pressure exceeding 600 kilograms per square meter. This ensures that even during severe, historically rare snowstorms in northern regions, heavy snow accumulation will not cause module rupture or expose internal circuits. In southern regions prone to typhoons, the modules remain securely fastened to rooftops under strong winds, preventing secondary risks like encapsulant cracking or junction box loosening due to structural deformation. The integrity of the physical structure is the first line of defense for electrical fire safety—only when modules remain stable and resilient under extreme weather can fire hazards from mechanical damage be fundamentally avoided, achieving a true safety upgrade from "passive flame retardation" to "active defense."

5. Robust Structural Design: Breaking the Chain from Mechanical Damage to Fire Hazard However, mechanical threats in extreme environments come not only from sustained pressure but also from sudden, intense impacts. Jinko's Five-Star Fire-Resistant modules have successfully passed hail impact tests using 55mm diameter ice balls—nearly the size of a tennis ball. The impact force from such hail is sufficient to shatter ordinary glass and cause micro-cracks in cells, far exceeding the standard 25mm diameter test common in the industry. Industry research indicates that micro-cracks can become channels for current concentration, potentially leading to hot spots and even arc-induced fires over time. By employing high-strength tempered glass and shock-absorbing encapsulation structures, Jinko not only resists sudden physical impacts but also blocks the risk transmission chain from "mechanical damage → electrical failure → fire hazard" at its source. This ensures both structural integrity in extreme weather and safeguards the fundamental electrical safety of the rooftop.

Jinko Solar's Five-Star Fire-Resistant Modules, through their five core technologies—Class A system fire rating, UL 94 V-0 flame-retardant materials, dual needle-flame/glow-wire certification, anti-arcing design, and strong mechanical load capacity—truly deliver on the safety promise of "no ignition, no spread, anti-static, resilient to snow and wind, and resistant to moisture-induced short circuits." This launch represents the latest achievement from Jinko Solar's deep commitment to PV safety technology and focus on core customer needs. Moving forward, Jinko will continue to provide global users with safer, more reliable photovoltaic products using leading technology, enabling genuine synergy between green energy and building safety.