In May of this year, LONGi introduced the latest iteration of its Hi-MO 7 photovoltaic product after an extensive development and evaluation period aimed at delivering long-term value to end-users. This release aligns with the company’s commitment to reducing the Levelized Cost of Electricity (LCOE) while ensuring high efficiency, performance, and reliability for its clients.
The Hi-MO 7 module represents a significant leap in HPDC cell technology, surpassing expectations in power generation efficiency. It incorporates innovations such as high and low junctions, optimized film design, and advanced deposition techniques on the backside of the cell, enabling full-area passivation with minimal parasitic absorption. The front side features a local low-resistance contact layer, further enhancing efficiency. Both sides benefit from upgraded antireflection and low-recombination films, as well as improved metallization solutions, all of which contribute to superior performance. The upgraded HPDC cell technology significantly boosts conversion efficiency, power temperature coefficient, and overall reliability, resulting in enhanced power generation.
LONGi’s Hi-MO 7 modules based on HPDC cell technology have gained recognition for their exceptional performance. Prototype products were honored with the TÜV Rheinland Energy Yield Simulation AQM Award in 2022. In a power generation demonstration project in Qionghai, Hainan, the Hi-MO 7 modules outperformed other bifacial modules, achieving a 2.9% power generation gain. This underlines their superior temperature coefficient, performance in low-irradiation conditions, improved angle of incidence, and overall product stability, making them particularly valuable for ground power generation applications.
Reliability throughout the product lifecycle is a top priority for LONGi, and the Hi-MO 7 module reflects this commitment. It incorporates several design optimizations, including high-quality monocrystalline silicon wafers, customized cell paste, an optimized module encapsulation film system, SMBB high-precision interconnection, and the high-reliability automatic welding of junction boxes.
An important aspect of the Hi-MO 7 module is its adherence to the standardized M10 module size of 2278×1134 mm. This large-sized, high-efficiency bifacial module has captured a significant market share since its introduction three years ago, accounting for over 70% of the market. The industry-wide standardization of the M10 size reduces application risks in extreme weather conditions, promotes coordination throughout the industry chain, facilitates the replacement and upgrade of existing solar power plants, and contributes to the healthy and sustainable development of the industry.
LONGi’s product portfolio now encompasses the Hi-MO series, comprising the Hi-MO 5, Hi-MO 6, and Hi-MO 7 modules, tailored to various scenarios. The Hi-MO 5 series, recognized for its mature and reliable power generation performance, remains the primary choice for the utility market. The Hi-MO 6 series, introduced last year, caters to the distributed generation market globally, offering both high efficiency and exceptional power generation while delivering an outstanding visual experience to users. The Hi-MO 7 series is specifically designed for situations that require modules with high ground surface reflectivity, elevated ambient temperatures, and limited land availability.
