LONGi Unveils Revolutionary HIBC Technology and 700W Solar Module at SNEC2025

SHANGHAI, June 12, 2025 /PRNewswire/ — On June 11, LONGi officially unveiled its innovative HIBC technology and mass-produced module products at the 18th International Solar Photovoltaic Exhibition (SNEC). This groundbreaking HIBC technology marks a significant milestone in the industry, achieving a power output exceeding 700W for the first time with a standard module size of 2382mm x 1134mm. Additionally, the efficiency of these mass-produced modules approaches 26%, leading the photovoltaic industry into the “25%+ Era.”

HIBC: A Superior Solution for High Value and Reliability

HIBC, which stands for Hybrid Interdigitated Back-Contact, is a high-low temperature composite passivated back contact technology. It combines the advantages of HJT (Heterojunction Technology) and BC (Back Contact) to enable large-scale mass production of photovoltaic modules for the first time globally. At the press conference, LONGi’s Chairman, Zhong Baoshen, emphasized that this achievement represents another peak in LONGi’s ongoing technological innovation and a significant advancement in BC technology.

In April 2025, the Institute for Solar Energy Research Hamelin (ISFH) in Germany certified that HIBC cells reached a conversion efficiency of 27.81%, setting a new world record. Zhong stated, “Conversion efficiency is not just the hallmark of photovoltaic technology; it is the lifeblood of photovoltaic products.” He advocated for enhancing power output within the same area or standard size to maximize unit yield. He cautioned against merely improving efficiency through physical stacking and area expansion, which can compromise reliability and quality.

Despite the success of LONGi’s HPBC 2.0 products, which feature 72-piece standard-size modules and lead TOPCon products by 30W, the company continues to pursue technological innovation and R&D.

Introducing ‘Power Density’

The newly launched HIBC technology product achieves over 700W with a standard module size of 2382mm x 1134mm, resulting in a power density exceeding 259W/m² and a module efficiency of 25.9%. This product is recognized as the most efficient industrial photovoltaic module currently available. Zhong explained, “By enhancing efficiency, we achieve unit yield, successfully marrying high value with reliability.”

In comparison to other 700W modules in the industry, most of which measure 2384mm x 1303mm, LONGi’s module is 0.4m² smaller yet boasts a power density that is 34W/m² higher, effectively challenging the traditional belief that larger sizes yield higher power outputs. This marks the first introduction of the concept of “power density” in the industry. LONGi remains committed to technological innovation, high-quality standards, and prioritizing customer interests. The impressive power density of 259W/m² positions this module as a more valuable option for land and rooftop applications, which are becoming increasingly scarce.

Another significant advantage of HIBC technology is its potential to elevate the efficiency of mass-produced photovoltaic modules into the “25%+ Era.” Historically, the module efficiency in the PERC era was over 22%, while TOPCon achieved over 23%. BC technology opened the door to 24%+ module mass production efficiency. The new 700W module from LONGi combines HJT high-quality passivation technology with BC for an unprecedented efficiency improvement. “In less than three years, we have elevated the efficiency of photovoltaic modules to a new level, demonstrating the expansive potential of BC technology,” Zhong noted.

Professor Martin Green, often referred to as the “Father of Solar Energy” and affiliated with the University of New South Wales in Australia, praised LONGi’s advancements in BC technology. At the press conference, he highlighted that LONGi’s HIBC technology ranked first in the updated world solar cell efficiency list, a testament to the company’s relentless pursuit of excellence in the BC technology sector.

High-Density Packaging Technology

Furthermore, HIBC products leverage high-density packaging technology, increasing the cell screen occupation ratio from 93.2% to 95.1%. This enhancement significantly boosts the light absorption area while maintaining a balance between reliability and high efficiency.

On May 7 this year, LONGi launched the EcoLife series at the Intersolar exhibition, a mass-produced product based on HIBC technology. This module’s mass-produced cell efficiency reached 27.3%, with overall module efficiency exceeding 25%.

Building a BC Ecosystem

During the press conference, Zhong Baoshen also shared the progress of the BC ecosystem, initiated in 2023. By the end of May 2025, LONGi had engaged in technical collaborations with 191 global partners and secured 55 cooperative agreements across seven major fields, including silicon wafers, cells, modules, system solutions, hydrogen energy, biomass, and engineering technology, generating initial revenues of 1.95 billion yuan.

At the SNEC on May 24, 2023, LONGi launched the STAR Innovation Ecological Collaboration Platform, aimed at creating a global collaborative innovation ecosystem centered around a “Global Zero Carbon Technology Innovation Center.”

On July 3, 2024, during the inauguration of the Global Distributed R&D Center, LONGi outlined the operational framework for building the BC ecosystem, which includes three value propositions, three cooperation principles, and four modules for evaluating partners, selecting models, providing technical support, and sharing value. This framework is designed to ensure effective implementation through a professional organization, a comprehensive process, a digital system, and full-cycle monitoring.

Zhong concluded, “Our commitment remains focused on initiating from the end and fostering the sustainable and healthy development of the photovoltaic industry.” Moving forward, LONGi aims to expand its collaborations to enhance and amplify the value of BC technology, ensuring its integration across various industries and households.

SOURCE LONGi Solar