- Hi-MO X10 features new proprietary HPBC 2.0 back contact technology
- Availability in Italy: Starting from April 2025
- Maximum production capacity for HPBC 2.0 modules by the end of 2025: 50 GW
LONGi launches its next-generation product range in Italy - the Hi-MO X10. These modules are based on LONGi’s new HPBC 2.0 technology, TaiRay wafer and N-type cell. The new hybrid bipolar cell passivation brings significant improvements in efficiency, module overheating and performance under shading conditions. In addition, the Hi-MO X10 modules feature a 0BB (zero-busbar) structure and a soft-breakdown design, optimizing module performance under shading by reducing power loss by 70% compared to TOPCon modules. All in all, the Hi-MO X10 modules sets a new industry performance benchmark with a power output of up to 670W, 24.8% module efficiency, a soft-breakdown design that prevents overheating, and anti-shading technology. LONGi aims to achieve approximately 50GW production capacity for HPBC 2.0 modules by the end of 2025.
In Italy the module will be available in in 54 and 72 cell sizes, with the first deliveries starting in April 2025.
Gianluigi Riva, Sales Director for the Distribution Segment in Italy:
" According to a recent report published by Wood Mackenzie, back-contact technology is dominating the distribution segment. Therefore, LONGi's new Hi-MO X10 modules represent a new frontier of innovation for the PV industry. At the same size, these modules generate far greater power output than TOPCon modules, with peak module efficiency of well over 24 percent.
The innovative TaiRay wafer increases break resistance and long-term reliability by reducing degradation. The Hi-MO X10 product family is suitable for any type of scenario especially for the climate we have in Italy. On cloudy days with low temperatures, or in hot and dry summers, the modules have a higher power production. This leads to greater gains or savings in the case of self-consumption.
In addition, installing more power in the same area used speeds up the return on investment. Hi-MO X10 modules are particularly synergistic not only in rooftop installations in residential, industrial and commercial settings, but also for Agrisolar and Agrivoltaics. There is already demand for the dual-glass version for utility scale installations.
Overall, Hi-MO X10 modules are set to revolutionize solar energy production. "
Hi-MO X10 - Engineered to maximize reliability, long-term energy yield, and optimize return on investment
With just 1% degradation in the first year and a 0.35% annual linear degradation rate per year, the module offers unmatched longevity. In addition, its temperature coefficient of -0.26%/°C, which is 0.03% lower compared to TOPCon modules, ensures superior performance especially in hot climates.
HPBC 2.0 enhances module efficiency and reliability through a multi-layer structure designed for optimal performance:
- The multi-layer anti-reflective coating increases the short-circuit current by 2.25% and reduces short-wave reflections by over 12%, ensuring greater solar light absorption.
- By leveraging its self-developed hybrid bipolar passivation, LONGi boosts the open-circuit voltage by 15mV, reaching up to 745mV. The uniform hybrid passivation significantly reduces UV-induced degradation and enhances long-term efficiency.
- Thanks to bipolar passivation contacts and anti-shading technology, the new Hi-MO X10 modules reduce power losses by over 70%, while lowering hotspot temperatures by 28%, ensuring greater safety and performance in shaded areas.
- Additionally, the special 0BB structure increases power output, and the more durable TaiRay wafer enhances module reliability.
The zero-busbar structure significantly changes cell design and performance
The back contact manufacturing process has been upgraded through the implementation of a zero busbar (0BB) structure on the back of the cell as well. LONGi is the first company worldwide to use 0BB on a back contact platform utilizing an intelligent soldering process to make the connections stronger than with conventional soldering. By directly connecting the ribbons to the fingers the energy transmission distance is reduced by 6.5%, adding an extra 5W to the module’s power output. This changed back contact structure also removes the shading of the busbars, enhancing aesthetics as well as its performance. Precision laser etching and advanced high transparency insulating materials further enhance performance by reducing leakage risks and improving light absorption.
LONGi’s TaiRay wafer drives a higher reliability and durability
LONGi’s proprietary TaiRay wafer enhances energy production potential compared to conventional wafers. With high resistance uniformity, lower impurity levels, and a significant 16% increase in break resistance, this wafer is one of the key factors behind the high performance of the Hi-MO X10. The performance increase and related benefits are the result of an improved crystal pulling process used in the production of monocrystalline silicon ingots.
HPBC 2.0 is the start of a new era in back contact technology
LONGi’s HPBC 2.0 technology represents a leap in back contact modules. One of the major advancements by LONGi’s R&D between HPBC 1.0 and 2.0 is the 1% cell efficiency increase within only 2 years of development from 2022 to 2024.
LONGi's commitment to research and development to further improve its back contact technology continues unabated, resulting in several records in 2024. The latest record from October 2024 is especially significant because LONGi is the first Chinese solar technology company which has set the module efficiency world record since its recordings in 1988. With 25.4% LONGi is now leading the global module efficiency record list. The National Renewable Energy Laboratory (NREL) has updated its Champion Photovoltaic Module Efficiency Chart accordingly: https://www.nrel.gov/pv/module-efficiency.html
In May 2024, LONGi made history when its heterojunction back contact (HBC) solar cell achieved a new world record for photovoltaic conversion efficiency at 27.3%, certified by the Institute for Solar Energy Research Hamelin (ISFH).
The Hi-MOX10 will be available in sizes of 54and 72 cells.
Links:
Website: https://www.longi.com/eu/products/modules-series/hi-mo-x10/
Datasheets:
- LR7-54HVH - https://short.longi.com/explorer-54hvh-italian
- LR7-72HVD - https://short.longi.com/explorer-72hvd-italian
- LR7-72HVH - https://short.longi.com/explorer-72hvh-italian
Leaflet: https://static.longi.com/Hi_MO_X10_Leaflet_a3840f66e5.pdf