LONGi Sets New Global Records for Solar Cell Efficiency at SNEC 2025

LONGi Announces Two New Global Solar Cell Efficiency Records
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On June 12, 2025, during the highly anticipated SNEC 18th (2025) International Photovoltaic Power Generation and Smart Energy Conference & Exhibition, LONGi made a significant announcement regarding two groundbreaking technological advancements at the Technology Innovation Session. Certified by the authoritative U.S. National Renewable Energy Laboratory (NREL), LONGi’s self-developed large-area (260.9 cm²) crystalline silicon-perovskite two-terminal tandem solar cell achieved a remarkable conversion efficiency of 33%, setting a new global efficiency record for large-area tandem cells. Additionally, the efficiency of its back-contact (BC) module surpassed 26%, once again elevating the efficiency standards for crystalline silicon modules. Both achievements have been officially included in the Solar Cell Efficiency Tables (Version 66), underscoring China’s ongoing progress in global photovoltaic (PV) technology.

### Tech Breakthroughs: Redefining Industry Standards

At SNEC 2025, LONGi’s crystalline silicon-perovskite tandem solar cell reached an unprecedented 33% efficiency on a large area of 260.9 cm² through innovative material use and structural optimization. This accomplishment represents nearly a 20% increase in efficiency over traditional single-junction silicon solar cells, marking the first instance of achieving 33% efficiency at mass-producible dimensions. This breakthrough paves the way for reducing photovoltaic energy costs. Simultaneously, the 26% efficiency of LONGi’s back-contact (BC) modules highlights the company’s deep expertise in this field, pushing crystalline silicon module efficiency closer to the 27% threshold.

As a leader in the PV industry, LONGi has consistently driven technological innovation. The company has transformed the market by mainstreaming monocrystalline technology over polysilicon and has made significant strides in perovskite and BC solar cell research, creating a comprehensive R&D ecosystem that encompasses materials, equipment, and manufacturing processes.

Li Zhenguo, the Founder of LONGi and President of its Central R&D Institute, emphasized the company’s commitment to innovation, stating, “LONGi’s innovation genes stem from a deep respect for technological fundamentals. We focus not only on our own breakthroughs but also on fostering collaborative innovation.” These remarkable world records have been formally recognized in the 66th version of the Solar Cell Efficiency Tables, curated by Professor Martin Green and a global panel of leading scientists. This authoritative benchmark has been published in “Progress in Photovoltaics” since 1993 and is widely acknowledged as the “gold standard” for tracking advancements in PV technology.

### Innovation Strategy: From Cell Technology to Collaborative Ecosystems

As LONGi celebrates its 25th anniversary, the company revealed a dual-engine strategy of “Innovation + Collaboration.” This approach aims to intensify research and development in cutting-edge fields like BC, perovskite, and hydrogen energy while establishing an open innovation ecosystem with global partners. Li Zhenguo noted, “The era of photovoltaics as a dominant energy source has arrived, yet challenges such as energy storage and grid integration persist. Only through collaborative innovation can clean energy genuinely benefit everyone.”

A highlight of the exhibition was LONGi’s collaboration with Belgium’s Innoputs Solar Team on the solar race car “Infinite Apollo.” Utilizing LONGi’s latest BC solar cells and flexible encapsulation technology, the vehicle is set to compete in the Bridgestone World Solar Challenge (BWSC). This partnership exemplifies innovative applications in the “PV + Transportation” sector, showcasing the limitless potential of technology.

At SNEC 2025, LONGi declared to the global community that Chinese PV enterprises are reshaping the industry landscape with their technological advancements, accelerating the journey toward a zero-carbon future. Li expressed, “Over the past 25 years, PV technology has established clean energy as the most economical power source in the world. For the next 25 years, our mission is to integrate green energy into every aspect of life. These records are not just milestones for LONGi; they act as catalysts for the global energy transition.”

### About LONGi

Founded in 2000, LONGi is committed to being the world’s leading solar technology company, focusing on delivering customer-driven value for comprehensive energy transformation. Under the mission of “making the best use of solar energy to build a green world“, LONGi is dedicated to technological innovation and has established five business sectors, including mono silicon wafers, cells, modules, commercial and industrial distributed solar solutions, green energy solutions, and hydrogen equipment. The company has strengthened its capabilities to provide green energy and has recently embraced green hydrogen products and solutions to support global zero-carbon development.

For more information, visit [www.longi.com](http://www.longi.com).