LONGi has announced two groundbreaking technological breakthroughs at the recent SNEC 2025 event. Certified by the US National Renewable Energy Laboratory (NREL), the company’s self-developed large-area (260.9 cm²) crystalline silicon-perovskite two-terminal tandem solar cell achieved a conversion efficiency of 33%, setting a new global efficiency record for large-area tandem cells. Simultaneously, the efficiency of its back-contact (BC) module surpassed 26%, once again raising the efficiency ceiling for crystalline silicon modules.
“LONGi’s innovation genes stem from reverence for technological fundamentals,” commented Li Zhenguo, Founder, VP of its Central R&D Institute and the company’s newly appointed CTO.”We focus not only on our own breakthroughs but also champion collaborative innovation. The era of photovoltaics as a dominant energy source has arrived, yet challenges like energy storageand grid integration remain. Only through collaborative innovation can clean energy truly benefit everyone.”
“Whether pushing the limits of single-junction silicon solar cells or advancing next-gen tandem technologies, LONGi embraces multiple technological pathways with an open mindset. Today’s dual breakthroughs epitomize our relentless commitment to R&D and efficiency frontiers. We will continue driving PV to become the world’s primary energy source,” Li continued.
“Over the past 25 years, PV technology has made clean energy the world’s most economical power source. For the next 25, our mission is integrating green energy into life’s every detail. These records mark not just LONGi’s milestones – they are accelerants for global energy transition,” he concluded.
