Commit to low-carbon transformations to
become a green practitioner and realize environmental sustainability
The Group’ s greenhouse gas emissions include direct emissions, indirect emissions associated with energy, and other indirect emissions. Sources of direct emissions include gases used during production processes (PFCs, N2O, CH4, CO2); equipment for preventing volatile organic compound pollution; emergency generators; natural gas, liquefied petroleum gas, petroleum, diesel, and other fuels used by other facilities; and fugitive emissions from septic tanks, fire drills, and associated equipment. Indirect emissions associated with energy mainly stem from purchased electricity. Other indirect emissions stem from product and material transportation, supplier production, employee travel, waste treatment, and employee commutes. Please refer to Appendix I [Environmental Data] for more information on the Group’s greenhouse gas emissions in 2024 Gradually installed local scrubbers which contain equipment to reduce fluorine gases and achieve carbon reduction benefits Established a smart electricity usage management platform to monitor energy eiciency and prevent unnecessary energy wastage Centralized production plants; reduced machinery loads to conserve energy; and adjusted chillers, temperatures, humidity levels, and dew points in accordance with machine loads Machinery unit adjustments, RA scheduling optimization, energy conservation lighting, and performance enhancements Planned procurement of renewable energies, including solar power, wind power, and other renewable energies - Reduced raw materials usage Greenhouse gas emission intensity (t CO2e/NTD thousand yuan) ( Category 1+ Category 1) Annual carbon emissions/Annual turnover Direct greenhouse gas emissions Indirect greenhouse gas emissions Indirect greenhouse gas emissions from transportation Indirect emissions from products used Carbon Emissions (tCO2e) Reduction Measures Boundaries Category 1 Category 2 Category 3 Category 4 The Group ’ s total greenhouse gas emissions for 2024 amounted to 464,008.49 tCO2e, a decrease of 289,508.59 compared to the previous year. Direct greenhouse gas emissions from our main subsidiaries EPISTAR and Lextar were reduced by 4.64% compared to the previous year. The Group ’ s greenhouse gas emissions mainly stem from indirect emissions associated with energy from electricity usage, which accounted for 50.77% of Group emissions; the second highest source of emissions was Category 1 direct emissions, which accounted for 36.35% of Group emissions. We gained a comprehensive understanding of Ennostar emissions in all categories through ISO 14064-1 inventories, and set reduction targets and measures accordingly.