Longi Breaks Solar Efficiency Record with New Module

Longi Unveils 670W Solar Panel and Sets New Efficiency Record

Longi, a leading Chinese solar manufacturer, has introduced a groundbreaking 670W solar panel and achieved a new world record for silicon solar cell conversion efficiency. The company announced that its Heterojunction Interdigitated Back Contact (HIBC) silicon solar cells have reached an impressive 27.81% efficiency, certified by Germany’s Institute for Solar Energy Research Hamelin (ISFH).

This milestone not only boosts global confidence in advanced solar solutions but also cements Longi’s position as an innovator in delivering revolutionary energy technologies.

Upgraded Hi-MO 9 Solar Module

Longi also unveiled its enhanced Hi-MO 9 solar module, utilising Hybrid Passivated Back Contact (HPBC) 2.0 technology to achieve a conversion efficiency of 24.8% and a maximum power output of 670W. This upgraded module was showcased at an event in Anhui, China, where Longi highlighted its industry-leading efficiency, surpassing mainstream TOPCon modules by 40W in mass production.

The Hi-MO 9 module, powered by HPBC 2.0, is positioned as a game-changer in enhancing the value of photovoltaic power plants globally, offering unparalleled benefits to customers worldwide.

Technological Advancements

The Hi-MO 9 modules incorporate Longi’s second-generation HPBC technology, 0 Busbar (OBB) technology, and full-area passivation, enabling a 10W power boost to reach a peak of 670W. The optimised rear-side grid design, facilitated by 0BB technology, enhances module bifaciality to over 80%, resulting in significantly improved overall energy yield.

Dennis She, vice president of Longi, emphasised that BC technology signifies a significant leap in crystalline silicon solar cells, with high-efficiency BC modules rapidly gaining traction across various applications. The company is dedicated to sharing BC innovations with global partners to foster a sustainable future.

Efficiency and Performance

Longi’s Hi-MO 9 modules offer a 1.5% absolute efficiency gain compared to TOPCon modules, increase installed capacity by around 6.4% under equivalent land area, and reduce upfront investment costs. These modules also demonstrate enhanced performance in challenging environments such as partial shading, high temperatures, high humidity, and low-light conditions.

Field demonstrations conducted over the past year have showcased the remarkable energy generation capabilities of the Hi-MO 9 module across diverse environments, including a 1.89% per-watt energy yield advantage in Hainan, China, and a 1.62% gain in Riyadh, Saudi Arabia.

Global Initiatives

Longi announced a partnership with TÜV Rheinland, a renowned third-party certification institution, and launched the “Global Optimal BC Solar Power Plant Design Challenge.” This competition, open to consultancies, EPC firms, and renewable energy investors, invites designs for innovative ground-mounted power plant projects exceeding 50MW, with a total prize purse of approximately $US280,000 available to the winners.