Energy Management
Task Force on Climate-Related Financial Disclosures (TCFD)
Climate change has become a common challenge for global enterprises to promote sustainable development. To control the global warming within no more than 2 ºC and affect the opportunities and risks implied in enterprise capacity expansion and market opportunities are the challenges that enterprises must face up to and prepare in advance. ChipMOS is well aware of the importance of corporate action and shoulders the heavy responsibility of environmental protection. We refer to the framework of the Task Force on Climate-related Financial Disclosures (TCFD) issued by the Financial Stability Board (FSB), identify the management of ChipMOS climate change risks and opportunities, and further have a comprehensive understanding of the impact of climate change.
▼TCFD Framework
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GHG Inventory
ChipMOS actively responds to the global trend of carbon reduction, brings mitigation and adaptation of climate change into important issues in operation management, and sets the Environmental Safety, Health and Energy Management Committee as the authority and responsibility function to promote carbon management issues. Since 2009, each fab has independently implemented inventory, established a GHG inventory lists, and identified key GHG emissions sources in the production process for management. We conduct verification every year in accordance with ISO 14064-1 to ensure data quality and provide credible carbon management information to stakeholders.
In 2025, ChipMOS's total greenhouse gas emissions (Category 1 + Category 2) were approximately 235,531.2864 tCO2e. Analyzing the total greenhouse gas emissions, 98.4% were Category 2 emissions generated from purchased electricity, while Category 1 emissions accounted for approximately 1.6% of the total emissions. In addition, since 2021, ChipMOS has voluntarily expanded its verification to include Category 3 and Category 4 in accordance with the ISO 14064-1:2018 standard. In response to IFRS requirements, the Company has phased in the expansion of its inventory scope year by year, successively incorporating "Capital Goods," "Use of Assets," and "Investments" categories in 2023 and 2024. In 2025, the inventory boundary for raw material suppliers continued to expand to more completely reflect the carbon emission status of the value chain and accurately identify the sources of carbon hotspots, thereby effectively connecting with suppliers to actively promote value chain carbon reduction actions. Emission of Categories 3 to 6 in 2024 were 119,699.14 tCO2e.
Energy Management and Efficiency
Due to the characteristics of the technology manufacturing industry, ChipMOS is one of the major power-consuming enterprises regulated by the Bureau of Energy under the Ministry of Economic Affairs. Since 2012, ChipMOS has been committed to a rigorous and energy-saving attitude towards energy use, continuously introducing various energy-saving technologies and equipment. In 2014 and 2017, it voluntarily introduced ISO 50001 energy management system certification in its Tainan plant and Hsinchu plant, respectively. To further enhance the accuracy and implementation of energy management measures at each plant, ChipMOS plans to introduce ISO 50001 verification for its Zhubei plant and Hukou plant by 2025, accurately identifying major power-consuming equipment through energy audits and implementing various energy-saving initiatives based on audit results.
2025 electricity saving rate reached 2.61%, continuously expanding the integration of energy-saving production equipment
ChipMOS energy-saving team continues to focus on four major energy-conservation categories: "Equipment Reduction, Smart Energy Efficiency, Lighting Optimization, and Operational Alignment." By replicating high-benefit initiatives from 2024 across facilities, the team also actively evaluates pioneering energy-saving technologies. In 2025, the primary focus was placed on introducing "cooling tower fan lightweighting" and "air compressor waste heat recovery" technologies, alongside the simultaneous optimization of operational parameters for significant energy-consuming equipment. Furthermore, ChipMOS has extended its energy-saving scope to the production lines, closely integrating energy management with manufacturing processes. This fosters full employee participation and ensures the successful attainment of our annual energy management targets.
Green Energy Planning
Purchased electricity for manufacturing is the main driver of our carbon footprint. To advance our net-zero transition, ChipMOS prioritizes internal energy-saving measures, supplemented by investments in solar power and Taiwan Renewable Energy Certificate (T-REC). Since 2012, we have installed rooftop solar systems across our northern and southern facilities, signing wheeling contracts with Taipower. To further boost renewable energy use, we also lease land to build solar plants, with sites spanning northern, central, southern, and eastern Taiwan.