LONGi Solar Technology(ロンジソーラーテクノロジー) Official site

In 2025, the prestigious U.S. testing and certification organization RETC (Renewable Energy Test Center) announced the "2025 PV Module Index Report," awarding LONGi the "Overall Highest Achiever" title for the seventh consecutive year. This award is given only to companies that have achieved outstanding ratings in all three areas of reliability, performance, and manufacturing quality. RETC's tests are conducted under stringent standards that exceed IEC specifications and are applied to major module products worldwide. Of the products evaluated this year, only 13% met the standards, but LONGi excelled in each category. In reliability testing, it received high ratings for damp heat (DH), PID, temperature cycling (TC), and mechanical load (SDML). In performance testing, it recorded top-class results in LETID, LID, temperature coefficients, and PAN file performance. LONGi's seven consecutive awards demonstrate its leadership in product development, manufacturing, and quality control, reaffirming its role as a driving force in the high-quality development of the global solar industry.

In June 2025, LONGi was recognized as a "Top Performer" for the eighth consecutive year in the "2025 PV Module Reliability Scorecard" announced by KiwaPVEL. KiwaPVEL is a globally recognized independent testing organization, and this certification demonstrates the highest standards of product reliability and performance in the industry. This time, LONGi achieved excellent results in all tests, including Temperature Cycle Test (TC), Dynamic Mechanical Load (MSS), PID Test, Light-Induced Degradation and High-Temperature Induced Degradation Tests (LID + LETID), and PAN file performance evaluation. Notably, in 2025, only 21 products worldwide were selected as "Top Performers" across all tests, and only 3 products were chosen for PAN performance, with LONGi being one of them. This achievement reflects LONGi's continuous improvement in technological innovation and manufacturing quality, and it is a testament to its commitment to providing more stable, high-efficiency, and sustainable solar solutions to customers around the world.

LONGi has been recognized as the first in the solar power industry to achieve the "Lighthouse Factory + Zero Carbon Factory" certification at the "Shanghai Climate Week 2025" to be held in April 2025, with its Jiaxing factory in Zhejiang Province, China, receiving the "Climate Lighthouse 2025 Model Award." In addition to the WEF's "Lighthouse Factory" certification, the factory has also obtained carbon-neutral certification based on ISO 14068. By utilizing automation, IIoT, big data, and 5G technology, it has advanced production and achieved decarbonization through the use of renewable energy and carbon credits. This has established a smart and sustainable manufacturing model that involves the entire supply chain, with expectations for spillover effects into other industries. Furthermore, the Jiaxing factory promotes the use of renewable energy through the installation of rooftop solar power facilities and the utilization of Green Energy Certificates (GEC). With advanced energy management and environmentally conscious operations, it has set a new standard for decarbonized factories that combine practicality and sustainability. Moving forward, LONGi will continue to advance technological innovation and the practice of social responsibility as a global leader balancing responses to climate change and the construction of sustainable industries.

LONGi has achieved the highest rating of AAA for 21 consecutive periods in the "PV ModuleTech Bankability Ratings" announced by the UK-based Informa, up to the first quarter of 2025. This is the longest record in the market and demonstrates the company's strong financial foundation, supply capacity, and research and development capabilities. In particular, it has set a world record for conversion efficiency with its heterojunction back contact (HIBC) technology and tandem solar cells, showcasing its leadership in technology. Products equipped with BC technology, such as Hi-MO X10 and Hi-MO 9, have secured large-scale projects worldwide, with cumulative shipments of BC modules exceeding 30 GW. The company will continue to contribute to the realization of a sustainable energy society.

LONGi announced that in April 2025, it set a world record for conversion efficiency at 34.85% for tandem (multi-junction) solar cell technology using perovskite and crystalline silicon, as well as 27.81% for single-junction crystalline silicon solar cells. With this achievement, LONGi has secured a double world record in both categories, once again demonstrating its technological innovation at the forefront of the industry. The achievement of this world record in conversion efficiency for perovskite/silicon tandem solar cells marks the third time since reaching 33.9% in November 2023 and 34.6% in June 2024. Additionally, in the traditionally used single-junction crystalline silicon solar cells, this record achievement follows the industry's first update in five years to 26.81% in November 2022, and subsequent updates to 27.09% in December 2023 and 27.3% in May 2024, marking the fourth consecutive record update over four years. The record updates are not the goal but a milestone towards the future. LONGi's research and development team will continue to pursue innovative research and development with the mission of "creating a world of green energy using solar energy."