On December 31, 2025, the Ordos Municipal Bureau of Ecology and Environment officially accepted and released for public disclosure the Environmental Impact Assessment Report for the Back-Contact (BC) Cell and Module Technology Retrofit Project submitted by Ordos LONGi Photovoltaic Technology Co., Ltd.
According to the public disclosure documents, LONGi plans to invest RMB 165 million to carry out a technology retrofit at its existing manufacturing site located in the Jiangsu Industrial Park of the Mengsu Economic Development Zone, Ejin Horo Banner, Ordos City, Inner Mongolia Autonomous Region. By introducing advanced photovoltaic manufacturing processes, the company intends to upgrade part of its existing capacity to high-efficiency back-contact (BC) cell and module production.
The retrofit project will be based on the company’s existing 5 GW per year module production lines. Specifically, LONGi will retrofit two of the six TOPCon module production lines that have already been completed and accepted. Without acquiring additional land, the company will install new equipment such as screen-printing machines and drying ovens, and optimize corresponding production processes, enabling these lines to produce BC modules.
Upon completion of the retrofit, the project will add an annual production capacity of 1.7 GW of BC modules. The plant’s total capacity will remain unchanged at 5 GW, comprising 3.3 GW of TOPCon modules and 1.7 GW of BC modules.
According to the project’s product plan, the BC modules to be produced through this retrofit will achieve significant improvements in technical performance. The modules are designed to reach a tested power output of up to 645 W, with a conversion efficiency as high as 28.0%, compared with approximately 25.7% for existing TOPCon products. These enhancements will allow the products to better meet diversified market demand for high-efficiency photovoltaic solutions and further strengthen the company’s market competitiveness.
Source：EnergyTrend