UMC announced today its achievement of the highest 'A' rating in both CDP's Climate Change and Water Security categories in 2025. UMC stands out as the sole semiconductor company globally to secure this double 'A' recognition for four consecutive years. This achievement highlights UMC’s continued international recognition for its outstanding performance in greenhouse gas reduction and water resource management.

UMC has long been committed to addressing climate change, actively promoting the adoption of renewable energy and setting ambitious greenhouse gas reduction targets. In 2024, the group’s renewable energy usage reached 17.1%. UMC Group's Scope 1 and Scope 2 greenhouse gas emissions presented an absolute reduction of 31% as compared to the base year (2020). In 2025, UMC received validation from the Science Based Targets initiative (SBTi) that our net-zero targets are aligned with the 1.5°C ambition, demonstrating its strong commitment to carbon reduction.

In terms of water resource management, UMC has implemented multiple water-saving measures, including process water-saving designs, increasing water recycling and reuse rates, and integrating high-efficiency water management. These combined efforts have effectively reduced water consumption. In 2024, UMC achieved total water savings of 1.023 million metric tons, significantly improving water use efficiency and advancing its sustainability goals.