Canadian Solar's GCL SI Joins TianGong Initiative for Enhanced Carbon Data Transparency
- GCL System Integration is the first solar company to join the TianGong Initiative for enhanced carbon data transparency.
- The GCL SiRo Carbon Data Platform allows for CO2 emissions quantification and blockchain traceability in the supply chain.
- GCL SI's innovative FBR production method significantly reduces carbon emissions, supporting its commitment to sustainability and low-carbon innovations.

GCL System Integration Takes a Leading Role in Carbon Transparency with TianGong Initiative
GCL System Integration Technology Co., Ltd. (GCL SI) makes headlines as it becomes the first solar photovoltaic company to join the TianGong Initiative, announced during the SNEC PV Power Expo 2025. This pioneering initiative, led by Tsinghua University and established by the Carbon Footprint Industry Alliance (CFIA), focuses on creating a comprehensive framework for carbon data. By participating in this innovative program, GCL SI aims to enhance transparency and verifiability within the solar industry, a critical step towards achieving global sustainability goals.
The TianGong Initiative includes a Life Cycle Assessment (LCA) data platform, designed to develop an extensive database for carbon factors and improve the interoperability of carbon data on an international scale. During the ceremonial signing of a tripartite agreement involving GCL SI’s COO Zheng Ren, TianGong Initiative’s Deputy Secretary-General Qi Jianchuan, and Ant Digital’s General Manager Li Shubo, the importance of transparent carbon data is underscored. GCL SI’s collaboration with Ant Digital leads to the development of the GCL SiRo Carbon Data Platform, which allows for enterprise-wide quantification of CO2 emissions and blockchain-based traceability throughout its supply chain.
GCL SI's commitment to low-carbon innovations is evident in its production techniques, notably its FBR granular silicon production, which boasts a leading CO2 footprint of just 37 kg CO2 equivalent per kilogram. This method significantly reduces carbon emissions, totaling over 2 million tons of CO2 for every 100,000 tons produced. Zheng Ren expresses pride in the company's involvement with the TianGong Initiative, emphasizing a shift from a linear model of production to a more dynamic network focused on sustainability and carbon emission reduction. As GCL SI integrates its product-level CO2 balance data into the TianGong LCA data platform, it positions itself as a key player in China's low-carbon data ecosystem, ultimately enhancing its competitive edge in the global green supply chain market.
In related developments, TCL Solar showcases its innovative back-contact (BC) module technology at the SNEC PV Power Expo 2025. The company highlights its high-efficiency modules, with BC modules reaching outputs of 680W and TOPCon modules achieving 750W. By collaborating with industry partners, TCL Solar aims to enhance the BC ecosystem and reduce the levelized cost of electricity (LCOE) in solar power, further contributing to advancements in sustainable energy solutions.
As the solar industry continues to evolve, the focus on carbon data transparency and innovative technologies remains essential. GCL SI's proactive steps within the TianGong Initiative reflect a broader commitment to sustainability, positioning the company as a leader in the ongoing transition to a greener energy future.