Announcement • Jul 16
LONGi Achieves 35.5% Conversion Efficiency for Crystalline Silicon-Perovskite Tandem Solar Cell LONGi officially announced that its independently developed crystalline silicon-perovskite tandem solar cell has achieved a conversion efficiency of 35.5%, certified by the European Solar Test Installation (ESTI), once again setting a new world record. Crystalline silicon-perovskite tandem solar cells represent the mainstream technology route for next-generation ultra-high-efficiency solar cells, with a theoretical efficiency limit of up to 43% – far exceeding the Shockley–Queisser limit of 33.7% for single-junction cells. Through sustained technological breakthroughs, LONGi's tandem cell team lifted the efficiency to 33.9% in November 2023 and further to 34.6% in June 2024. In less than a year since then, the team has achieved a series of successive advances, moving from 34.85% to 35.2%, and now to 35.5%. In May this year, LONGi's independently developed two-terminal crystalline silicon-perovskite tandem cell efficiency (35.2%) was included in the 68th edition of the Solar Cell Efficiency Tables published by the team led by Professor Martin Green at the University of New South Wales, Australia, marking a representative high-level achievement for this technology route at the time. Meanwhile, under conditions closer to industrial-scale dimensions, LONGi achieved conversion efficiencies of 34.3% (261 cm²) and 32.2% (274 cm²), highlighting the promising industrialization prospects of tandem technology. Furthermore, LONGi's tandem modules delivered conversion efficiencies of 31.4% and 29.4%, both independently certified by authoritative international institutions and included in the efficiency tables, further strengthening the foundation for moving crystalline silicon-perovskite tandem technology from the lab to industrial application. Announcement • Jun 30
LONGi Green Energy Technology Co., Ltd. to Report First Half, 2026 Results on Aug 31, 2026 LONGi Green Energy Technology Co., Ltd. announced that they will report first half, 2026 results on Aug 31, 2026 Announcement • Jun 23
LONGi Introduces Hi-MO9 Prime Solar Module Series At Intersolar Europe LONGi introduced its Hi-MO9 Prime solar module series at Intersolar Europe (Booth A2.170). As the latest in LONGi's premier Back Contact (BC) module platform, the Hi-MO9 Prime is engineered for utility-scale solar projects where land efficiency, long-term reliability, and lifecycle returns are critical. Delivering a mass-production module power of up to 680W and efficiency of up to 25.2%, the series sets a new performance benchmark for the global solar industry. The Hi-MO9 Prime is engineered to address these spatial dilemmas, enabling a substantially higher installed capacity per unit area compared with mainstream non-BC modules. In high-GCR project modelling, the module can increase total installed capacity by 4.62% under identical land area and layout conditions. A 10-hectare project scenario in the UK designed with a 50% GCR showed: mainstream non-BC modules achieve 12.00MW installed capacity, whereas Hi-MO9 Prime achieves 12.56MW on the same plot. This results in an annual energy yield gain of approximately 648.4MWh, translating to more than EUR 67,430 additional annual revenue for asset owners. Built on LONGi's advanced HPBC2.0 (Hybrid Passivated Back Contact) cell architecture, the Hi-MO9 Prime marks a technological leap forward. By placing all electrical contacts on the rear of the cell, the front surface remains entirely unobstructed, maximizing light absorption and elevating long-term value for global large-scale deployments. It also delivers superior partial shading tolerance to protect asset owners' revenue streams. Its highly parallel BC cell structure reduces electrical losses caused by localized shading from row-to-row obstructions, dust, fallen leaves, or other temporary objects. When a single cell is shaded, the Hi-MO9 Prime can reduce power loss by more than 70% compared with conventional non-BC modules. The module incorporates LONGi's proprietary Selective Temperature Alloy Connection (STAC) technology, which minimizes localized thermal stress during manufacturing and significantly improves long-term, cell-level stability. For utility-scale projects, this overall level of engineering reliability is essential to protecting 30-year asset value. 
