TSMC Introduces Blue Ammonia, a First for Taiwan's Semiconductor Industry

TSMC continues to promote a greener and low-carbon supply chain. In addition to collaborating with suppliers to develop electronic-grade recycled materials such as recycled cyclopentanone, TMAH, and IPA, the Company is expanding its decarbonization efforts through the launch of its first "Blue Ammonia Adoption Project," a joint project with aqueous ammonia suppliers. Through four key strategies, TSMC successfully encouraged upstream liquid-ammonia producers to adopt blue ammonia, which incorporates carbon capture and storage (CCS) technologies into the production process. Compared with conventional gray ammonia, blue ammonia can reduce the carbon footprint by 60%–70%. Aqueous ammonia produced from blue ammonia was officially adopted by TSMC's Fab 14A in Q4 2025, making TSMC the first semiconductor company in Taiwan to utilize blue ammonia. This initiative is expected to reduce emissions by approximately 250 metric tons per quarter. With full implementation across all fabs by 2030, annual emissions reductions could reach 70,000 metric tons, further strengthening the Company's green operations.

Addressing Liquid-ammonia Emission Challenges to Strengthen Low-carbon Management

Aqueous ammonia is a critical chemical in semiconductor manufacturing, essential for maintaining wafer cleanliness and performance. However, nearly 80% of its carbon footprint originates from the upstream production of liquid ammonia, making it a key challenge for supply-chain decarbonization. To advance its net-zero commitments, TSMC consolidated blue ammonia demand across multiple aqueous ammonia suppliers and adopted a four-pillar approach of benefit assessment, carbon-footprint verification, pricing negotiation, and procurement standardization to secure supply stability and accelerate low-carbon transition throughout the supply chain.

Supply-chain emissions management remains a critical component of TSMC's pathway toward net-zero operations. Beyond increasing the use of blue ammonia, the Company will further evaluate key chemicals such as hydrogen peroxide and sulfuric acid and actively explore low-carbon alternatives for raw material. Through innovative technologies and cross-industry collaboration, TSMC aims to accelerate the adoption of low-carbon materials and build a resilient and sustainable raw-materials value chain.