At the TaiyangNews Virtual Conference on Solar & Sustainability, Leon Zhuang, Global Marketing Director of Risen Energy, delved into commercial low carbon footprint of heterojunction (HJT) modules. Pitting these against the workhorse PERC, Zhuang said that the use of ultra-thin wafer size of 100µm for HJT modules reduces the use of raw materials while improving reliability. The company now aims for 210mm+80µm ultra thin silicon wafer. High production processes to incorporate busbar technology requires large amounts of energy leading to increased costs and carbon emissions. The goal is to now maintain low temperature in cell manufacturing process while reducing the amount of silver used, he said.
The Conference took place on 30 March 2023 and viewed solar & sustainability from different angles – corporate decarbonization strategies, low carbon vertically integrated module manufacturing and CO2 certification, to sustainable product sourcing, module recycling, and repowering of PV plants.
