In an era of accelerating photovoltaic technology iteration, Tongwei has once again set a new industry benchmark with its hardcore technological strength. On June 3, after testing by the internationally authoritative institution TÜV Rheinland, under the standard module size of 2384×1303mm, Tongwei's THC-G12 heterojunction copper interconnection module achieved an output power of 802.43W, with a full-area conversion efficiency of 25.83%. This marks the twelfth time this series of modules has broken the industry power record since its launch, leading the heterojunction industrialization process into a new stage.

1

Deep Technological Breakthrough Lays the Foundation for the Record

The birth of this record is a concentrated demonstration of Tongwei's technological innovation strength. Tongwei's PV R&D team has always upheld the R&D spirit of "pursuing excellence and striving to be first." By adopting copper interconnection metallization technology, it has achieved 100% silver-free heterojunction modules. On the cell technology side, it matches the industry's first-ever three-segment manufacturing, back-grinding technology, ultra-fine copper grid line technology, and edge optimization technology, driving breakthrough progress in cell efficiency. On the module technology side, it employs busbar-free interconnection technology, ultra-high aperture ratio design, ultra-high throughput light utilization, and ultra-low loss wire transmission and other advanced technologies, achieving higher light utilization and lower transmission loss for modules. The dual-effect combination successfully pushed the THC-G12 heterojunction copper interconnection module conversion efficiency above 25.83%.

2

Innovation System Support Builds Sustainable Competitiveness

The successive record-breaking achievements are inseparable from Tongwei's forward-looking R&D layout and systematic innovation capability. The company has built an innovation system covering the full chain of "R&D — pilot — mass production," forming tight technical barriers and an intellectual property system in key heterojunction process areas. On this basis, as the lead unit of the national key R&D program for the "15th Five-Year Plan" period, Tongwei will assemble the strengths of the entire industry to tackle frontier technologies such as heterojunction refined local field, comprehensive silver-free metallization, and ultra-high bifaciality, continuously consolidating its global leading position in heterojunction technology. Meanwhile, Tongwei's Global Innovation and R&D Center continues to drive the convergence and iteration of multiple technology routes including HJT, TOPCon, BC, and perovskite/crystalline silicon tandem, ensuring its technology leadership remains unshaken.

3

Authoritative On-Site Certification, Announced to Global Attention

This milestone achievement was officially announced to the world during the 2026 Shanghai SNEC International Solar PV and Smart Energy Conference. Li Weichun, Senior Vice President of Solar and Commercial Product Services for Greater China and Senior Vice President of Global Power Electronics Product Services at TÜV Rheinland, the internationally leading testing and certification body, presented Tongwei with the authoritative test certification certificate on site, rigorously verifying multiple dimensions including module power, efficiency, and reliability. This marks the recognition of the high-efficiency performance of Tongwei's THC modules by an international third-party authority.

Tongwei's record-breaking achievement not only consolidates its global leading position in the high-efficiency PV module field, but also demonstrates the powerful momentum of Chinese PV enterprises in continuously driving technology iteration. Going forward, Tongwei will continue to uphold the philosophy of technology-first and innovation-driven development, accelerating energy structure transformation with higher-efficiency, higher-reliability products and services, and supporting the achievement of global "dual carbon" goals.