PVTIME – The new facility exhibits multiple improvements in production efficiency and quality control as the manufacturer highlights recent technological advances in its HJT product lines.
Against the backdrop of intensifying competition in the global PV industry, the Tongwei Solar Technology Yancheng Base is exhibiting the company’s technological innovation and eco-friendly manufacturing advancements. From the facility’s ground-breaking to the completion of the first module took only 145 days.
The Yancheng Base adopts a 5G+ digital management model to facilitate whole-process intelligent configuration and automated optical inspection, significantly enhancing production efficiency and improving quality control. Deploying automated guided vehicle (AGV) carts and an intelligent material distribution system ensures accurate material delivery to targeted workshops. Furthermore, the application of stereoscopic warehouses achieve effective connection between production and inventory, further reducing labor intensity and improving turnover efficiency.
Green manufacturing practice
Tongwei Solar integrates green concepts throughout the entire product manufacturing process, establishing a comprehensive green product management system. It attains minimal product resource consumption and minimal ecological impact while maximizing rates of renewability. Tongwei Solar tracks its supply chain and carbon footprints. Material suppliers undergo audits by the procurement, quality, and technical departments.
Raw materials must go through an internal new material import process and pass validation tests before being included in the bill of materials (BOM). The manufacturing execution system can be utilized for configuring, querying, and documenting data concerning production materials. Various links such as silicon material mixing ratios, silicon wafers, cells and modules must strictly adhere to carbon footprint certification requirements. In addition, our recycling is carried out in accordance with the General Technical Requirements for Recycling of PV Modules.
Technical innovation and product upgrades
In the realm of technological innovation, Tongwei Solar has consistently increased its R&D investments and achieving breakthroughs in heterojunction (HJT) technology. The company’s THC-G12 module reached a peak output power of 762.79W and a conversion efficiency of 24.56%, according to testing by the authoritative third-party assessment body TÜV SÜD.
Simultaneously, in the realm of TOPCon technology, the TNC-G12R 66 large rectangular module can achieve a power output of 625W after design optimization, this represents a power increase of over 40W and an efficiency increase of up to 0.5% compared to the TNC-M10 72 module. This advancement effectively reduces the balance of system BOS and LCOE, showcasing outstanding performance. By maintaining a module width of 1,134 mm and increasing the length to 2,382 mm, the packing efficiency is enhanced, resulting in reduced transportation costs.
The TNC-G12 module leverages Tongwei Solar’s self-produced large square cells, enabling a power output of 720W. This marks a power increase of 130W and an efficiency improvement of 0.38% over the TNC-M10 72 module. Based on system yield analyses conducted across 10 representative global project sites, the TNC-G12 modules demonstrated an average decrease in LCOE of 2.64% compared to the TNC-M10 72 bifacial modules, with the highest reduction reaching 4.30%. In utility-scale power plants, the TNC-G12 modules exhibit significant application advantages.
