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, at 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 during the Technology Innovation Session. Certified by the esteemed US 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 exceeded 26%, further elevating the efficiency standards for crystalline silicon modules. Both milestones have been documented in the Solar Cell Efficiency Tables (Version 66), underscoring China’s continuous 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 over a large area of 260.9 cm², thanks to innovations in materials and structural optimization. This achievement represents nearly a 20% increase in efficiency compared to single-junction silicon solar cells and marks the world’s first 33% efficiency milestone at mass-producible dimensions. This breakthrough paves the way for reducing photovoltaic energy costs. Concurrently, the 26% efficiency of its back-contact (BC) modules showcases LONGi’s extensive expertise in this technology, pushing crystalline silicon module efficiency closer to the 27%% threshold.

As a leader in the PV industry, LONGi has continually driven technological innovation. The company has transformed the industry by popularizing monocrystalline technology over polysilicon and has taken the lead in perovskite and BC solar cell research, establishing a comprehensive R&D ecosystem encompassing materials, equipment, and manufacturing processes.

“LONGi’s innovation is rooted in a deep respect for technological fundamentals,” stated Li Zhenguo, Founder of LONGi, President of its Central R&D Institute, and the newly appointed CTO. “We focus not only on our own breakthroughs but also on fostering collaborative innovation.”

These significant world records have been officially included in the 66th edition 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 regarded as the “gold standard” for tracking advancements in the PV sector.

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

As it celebrates its 25th anniversary, LONGi has introduced a dual-engine “Innovation + Collaboration” strategy. This approach emphasizes enhancing R&D in cutting-edge areas like BC, perovskite, and hydrogen energy, while also establishing an open innovation ecosystem with global partners. Li Zhenguo remarked, “The era of photovoltaics as the primary energy source has arrived, yet challenges such as energy storage and grid integration remain. Only through collaborative innovation can clean energy truly benefit everyone.”

A highlight of the exhibition was LONGi’s collaboration with Belgium’s Innoputs Solar Team on the solar race car “Infinite Apollo.” Equipped with LONGi’s latest BC solar cells and flexible encapsulation technology, this vehicle will participate in the Bridgestone World Solar Challenge (BWSC). This cross-sector partnership serves as a pioneering example of “PV + Transportation” applications, showcasing the limitless potential of technology.

At SNEC 2025, LONGi made a bold statement to the global community: Chinese PV enterprises are reshaping the industry landscape with their technological expertise, propelling us towards a zero-carbon future. “Over the past 25 years, PV technology has made clean energy the most economical power source globally,” Li stated during the event. “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 are catalysts for the global energy transition.”

### About LONGi

Founded in 2000, LONGi is dedicated to becoming the world’s leading solar technology company, focusing on customer-driven value creation for a comprehensive energy transformation. Under its mission of ‘making the best of solar energy to build a green world,’ LONGi is committed to technological innovation and operates five business sectors, encompassing mono silicon wafers, cells and modules, commercial and industrial distributed solar solutions, green energy solutions, and hydrogen equipment. The company has refined 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).