PVTIME – In a major boost to the solar energy sector, LONGi Green Energy Technology, a global leader in solar innovation, announced a stunning achievement on 11 April at its base in Wuhu, Anhui Province of China.
The company’s proprietary HIBC (Heterojunction Interdigitated Back Contact) silicon solar cells have been certified by Germany’s renowned Institute for Solar Energy Research Hameln (ISFH) to have a photoelectric conversion efficiency of 27.81%. This new world record represents a significant leap forward in mono-crystalline silicon photovoltaic cell technology.
LONGi’s R&D Institute achieved this feat by reconstructing the cell structure and material system, resulting in a double breakthrough in optical management and carrier transport efficiency. This not only paves the way for higher power density in photovoltaic modules, but also rekindles global optimism for advanced solar solutions.
On the same day, LONGi also unveiled the upgraded Hi-MO 9 module featuring its HPBC 2.0 technology. Building on its successful debut last year, the new Hi – MO 9 module now boasts a conversion efficiency of 24.8% and a maximum power output of 670W, outperforming mainstream mass-produced TOPCon modules by 40W.
The improved performance of the Hi-MO 9 is due to innovative features such as 0BB (0 busbar) technology and full area passivation (half-cell architecture). The 0BB technology has optimised the back grid design, increasing bifaciality to over 80% and significantly increasing the overall energy yield. Compared to TOPCon modules, it offers a 1.5% increase in absolute efficiency, a 6.4% increase in installed capacity over the same area, and lower upfront investment costs for photovoltaic power plants.
LONGi has a history of record-breaking performance. Since setting a conversion efficiency record of 26.81% for crystalline silicon cells in November 2022, the company has continued to push the boundaries, reaching 27.81% in a series of incremental steps.
To further unlock the commercial potential of high-efficiency BC technology, LONGi partnered with TÜV Rheinland to launch the Global Optimal BC Solar Power Plant Design Challenge. Open to consulting firms, EPC companies and renewable energy investors worldwide, the competition calls for innovative designs for ground-mounted power plant projects over 50MW. Entries will be accepted from 11 April to 30 November 2025, with a total prize pool of approximately $280,000. With LONGi’s global BC module order book in excess of 40GW, the future of the PV industry is set to be redefined. Stay tuned for more updates as this solar revolution unfolds.
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