Longi Unveils 665 W HPBC Photovoltaic Modules with 24.8% Efficiency
Chinese solar module manufacturer Longi has introduced its latest high-performance solar modules, boasting a power conversion efficiency of up to 24.8%. The new Hi-Mo X10 series was revealed during a press event at the ATP Masters in Shanghai.
The Hi-Mo X10 modules are powered by Longi’s proprietary 2nd-generation hybrid passivated back contact (HPBC2.0) cell technology. Available in four variants, the modules offer power outputs of up to 665 W and feature dimensions of 2,382 mm x 1,134 mm x 30 mm, with a weight of 33.5 kg. They also exhibit an impressive temperature coefficient of -0.26% per degree Celsius.
Longi provides a 15-year product warranty and a 30-year linear power output warranty for the new modules, which are designed to degrade at an annual rate of 0.35% over 30 years, with the first-year degradation capped at 1.0%.
Compared to earlier models, the Hi-Mo X10 panels deliver 1% higher efficiency, thanks to the advanced 182mm n-type TaiRay wafers. These wafers are designed to improve electrical resistance, minimize metal contamination, and offer enhanced mechanical strength.
Longi’s HPBC2.0 technology also features a unique bypass diode structure, which helps reroute current when shaded, reducing power loss by more than 70% compared to traditional TOPCon modules. Additionally, the design reduces hotspot temperatures by over 28%, significantly mitigating overheating risks.
The zero-busbar (0BB) design is another standout feature of these modules, eliminating busbars on both the front and back to enhance light absorption and optimize reflected light capture.
Longi also announced that shipments of its HPBC modules exceeded 20 GW in the first half of 2024, with production capacity for HPBC2.0 modules set to reach 50 GW by the end of 2025.