25.28%! Tongwei TNC High-Efficiency Module Breaks Efficiency Record Again! Tongwei Sets New Records for Module Efficiency and Power


On March 20, Tongwei Co., Ltd.’s Photovoltaic Technology Center announced that, following testing by the international certification body TÜV, the Tongwei TNC-G12R module achieved a front-side power output of 682.8W with a standard size of 2382x1134mm, representing an approximate 60W increase compared to the mainstream mass-produced modules of the same size. The conversion efficiency reached 25.28%.

 

Meanwhile, the Tongwei TNC-G12 module, with a standard size of 2384x1303mm, achieved a power output of 778.5W and a conversion efficiency of 25.06%, also breaking records for both efficiency and power in the TOPCon module category.

 

Innovation and Progress: Reaching New Heights

 

Compared to Tongwei’s previous TNC module power record set in late December 2024, this achievement is primarily attributed to the deep integration of Tongwei’s R&D innovations in TNC cell and module technologies. By leveraging advanced technologies such as tubular PECVD poly deposition, Poly Tech, EPT passivation, and screen printing, along with optimizing the module’s optical and electrical designs, Tongwei further enhanced its high-density cell layout.

 

These advancements resulted in the TNC-G12R 66 module’s power increasing by 19.3W and its efficiency by 0.72%, while the TNC-G12 66 module’s power increased by 15.1W with a 0.48% boost in conversion efficiency. This achievement marks the second record-breaking milestone for Tongwei’s Global Innovation R&D Center since its inauguration, with this breakthrough occurring just three months after the last one — a strong testament to the center’s robust technological capabilities.

 

Leading the Industry Through Technological Excellence

 

Tongwei remains committed to the development and advancement of TOPCon technology, continuously contributing its expertise to drive the industry forward. The company led the development of the industry’s first G12 PECVD Poly cell pilot line, pioneering the application of large-format PECVD technology. This milestone filled a significant industry gap and secured Tongwei’s leadership in TOPCon cell manufacturing technology.

 

According to InfoLink Consulting, PECVD solutions currently account for 56% of the global 852GW solar cell production capacity. In 2023, PECVD technology was highlighted on the cover of the prestigious scientific journal Progress in Photovoltaics (PIP) and gained widespread recognition and citation internationally. Additionally, Tongwei’s “High-Efficiency Silicon Passivated Contact Solar Cell (TNC) Technology” was included in the 2023 China Photovoltaic Industry Innovation Achievements Catalog as the only TOPCon cell technology to receive this honor.

 

In 2024, Tongwei’s independently developed “High-Efficiency N-type TOPCon Solar Cell” was recognized as a Sichuan Province Major Technical Equipment First Set Product, marking the first time a solar cell has achieved this recognition in the region.

 

Innovating for a Sustainable Future

 

Technological innovation remains the driving force behind high-quality development. Tongwei consistently upholds its commitment to technological leadership and innovation. The company has established one of the most advanced and comprehensive R&D platforms in the industry, covering mainstream technologies including TOPCon, HJT, xBC, and Perovskite/Crystalline Silicon Tandem Cells and Modules.

 

With the continuous momentum from Tongwei’s Global Innovation R&D Center, the company will stay on its path of technological progress, contributing to the sustainable development of both China and the world.