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Annual performance
The Company has continued to demonstrate a strong commitment to environmental management and sustainable governance, responding to global climate action demands with tangible results. During the year, the Company conducted a comprehensive group-wide greenhouse gas inventory and obtained external third-party verification, ensuring data transparency and reliability, and laying a solid foundation for the formulation of subsequent carbon reduction strategies and performance tracking.
In terms of energy transition, the group-wide proportion of green electricity usage increased to 43.94%, with a total of 21.05 million kWh of renewable energy adopted, effectively reducing the Company’s operational carbon footprint and supporting the development of the renewable energy market. Water resource management also achieved measurable results: compared with the 2022 baseline year, total group-wide water withdrawal decreased by 22.29 million liters, representing an approximately 27% reduction of water use intensity, reflecting the Company’s continuous efforts to enhance process efficiency and water recycling and reuse. In addition, compared with the baseline year, group-wide Scope 1 and Scope 2 greenhouse gas emissions were reduced by 9,872 metric tons of CO₂-equivalent, a reduction of as much as 40%, demonstrating significant achievements through the adoption of energy-saving technologies, equipment improvements, and the use of green electricity.
The Company also continues to maintain IECQ QC 080000 certification, demonstrating high standards in hazardous substance management and the implementation of comprehensive controls across design, procurement, and manufacturing processes. Overall, through systematic management and continuous innovation, the Company is steadily advancing the reduction of its environmental footprint and taking more resilient steps toward sustainable operations.
43.74 %
Renewable electricity ratio
27 %
Water use intensity reduction
9872 tCO₂e
Category 1, Category 2 greenhouse gas emission reduction
Risk Assessment and Management Policy
The Company's manufacturing processes are primarily assembly operations, and its overall operating activities do not require process water. Except for certain plant facilities, such as dining areas and cooling equipment, water use is mainly for domestic purposes. As most operating sites are located in industrial parks or urban areas, all water is supplied by local water utilities. Given the straightforward purpose of water use and the relatively limited water consumption, the risk of impacts on local water resources and aquatic ecosystems is very low.
Nevertheless, we continue to actively manage water resources, strictly comply with water-related regulations in all regions, and incorporate water resource management into the operational management framework of the ISO 14001 environmental management system. Through institutionalized and procedural management approaches, we integrate water resource management with daily operations, wastewater treatment, and environmental performance management to ensure continuous improvement. At the same time, we continuously collect water use data, regularly monitor water consumption, and promote a water-saving culture through awareness initiatives and practical measures, thereby continuously improving water use efficiency and environmental performance and fulfilling our commitment to water resource management and protection.
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01
Daily Water-Saving Management
Install automatic sensor faucets, water-saving taps, and water-saving toilets, adjust toilet water levels, and enhance all employees' water-saving awareness through periodic inspections, water use monitoring, and awareness activities. -
02
Water Resource Performance Monitoring
Regularly disclose indicators such as total water consumption and water intensity to track annual improvement performance.
Water Resource Risk Assessment
The Company regards water resources as one of the operational risks arising under climate change. To strengthen operational resilience and water management, we use water resource assessment tools developed by the World Resources Institute (WRI) and the World Wide Fund for Nature (WWF) to analyze the water resource risk and water stress levels of major operating sites, identify sites located in areas of high water stress or potential water shortage risk, and use the results as reference for water management, water-saving measure planning, and related management decision-making, while incorporating them into the overall risk management framework.
In addition, the assessment results serve as a reference basis for formulating risk response measures. For operating sites facing relatively high water stress, the Company continues to monitor local water resource conditions and plans relevant management measures as appropriate to enhance overall water resource management capabilities and ensure stable operations and the sustainable use of water resources.
Overview of Water Resource Risk and Stress Information for Major Operating Sites
| Operating Site | Kaohsiung Headquarters | Taipei Office | Kunshan Guangxing Plant | Beihai Sunon Plant | Beihai Lizhun Plant | Huizhou Sunon Plant | Philippines Sunon Plant |
|---|---|---|---|---|---|---|---|
| Water Source | Zengwen River | Tamsui River | Taihu Basin | Hongchao River | Hongchao River | Dongjiang River | West Coast Basin of the Philippines |
| Water Supplier | Taiwan Water Corporation | Taipei Water Department | Kunshan Water Supply Group Co., Ltd. | Beihai Water Supply Co., Ltd. | Beihai Water Supply Co., Ltd. | Huizhou Water Group Co., Ltd. | Hermosa Water District |
| Wastewater Treatment Service Provider | Kaohsiung Central District Wastewater Treatment Plant | Neihu Wastewater Treatment Plant | Kunshan Development Zone Kuncheng Water Purification Co., Ltd. | Beihai Hongkan Wastewater Treatment Co., Ltd. | Beihai Hongkan Wastewater Treatment Co., Ltd. | Huizhou Hongyu Municipal Wastewater Treatment Co., Ltd. | Hermosa Ecozone Industrial Park Centralized Waste Water Treatment Facility |
| Receiving Water Body | Taiwan Strait | Keelung River | Wusong River | Beibu Gulf | Beibu Gulf | Dongjiang River | West Coast Basin of the Philippines |
| Water Risk Level | Very low risk (1.1－1.8) | Very low risk (1.1－1.8) | Low risk (1.9－2.6) | Low risk（1.9－2.6) | Low risk（1.9－2.6) | Very low risk (1.1－1.8) | Low risk（1.9－2.6) |
| Water Stress Level | Low - Medium (10－20%) | Low - Medium (10－20%) | Extremely high (> 80%) | Medium - High (20－40%) | Medium - High (20－40%) | Low - Medium (10－20%) | Medium - High (20－40%) |
Water Resource Management Policy
Sunon places great importance on the sustainable use of water resources. As its manufacturing processes do not involve process water, the focus of water resource management is on the effective management of domestic water use and improvement of water use efficiency. In accordance with relevant regulations and customer requirements, we have established a water resource management policy and promote various water-saving and management measures to implement water resource protection and sustainable use.
The Company has introduced a variety of water-saving measures, including the installation of water-saving devices such as water-saving taps, sensor faucets, and water-saving toilets, regular inspection of pipelines and equipment to prevent leaks, employee awareness promotion on water conservation, and the establishment of water consumption monitoring and recordkeeping mechanisms to continuously monitor water use and improve management effectiveness.
At the same time, through systematic water use data collection and continuous improvement mechanisms, we regularly track changes in water consumption and evaluate the effectiveness of water-saving measures. Water management is also integrated into daily operational management and employee participation mechanisms to enhance the sensitivity of departments and employees to water use efficiency and abnormal conditions and to drive improvement actions, ensuring that resource conservation and sustainable management objectives are achieved while meeting operational needs.
To strengthen water-saving performance, the Company has set short-, medium-, and long-term quantitative targets using 2024 as the base year. Through target-oriented management and continuous improvement mechanisms, it continues to improve water use efficiency and fulfill its commitment to the sustainable use of water resources.
Water Resource Management Targets and Performance
| Management Item | Base Year Index | 2025 | Short-term Target | Medium-term Target | Long-term Target | ||
|---|---|---|---|---|---|---|---|
| Target | Actual Performance | Achievement Status | 2030 | 2040 | 2050 | ||
| Reduce per capita water consumption | 13.14 (L/hour) | ≤13 | 12.77 | ✅ Achieved | Reduce by 5% | Reduce by 10% | Reduce by 20% |
Note: The base year is set as 2024. Per capita water consumption = total water withdrawal (L) / total working hours (hours).
Water Withdrawal and Consumption
To meet customer requirements, all Sunon production sites use 100% tap water as their water source. In 2025, total water withdrawal amounted to 289.516 million liters. As no water is used in manufacturing processes, no industrial wastewater was generated. Only general domestic wastewater was discharged, and no material water pollution impacts on the environment were caused.
Nevertheless, Sunon continues to promote relevant water-saving measures and strengthen employees' awareness of water conservation through internal awareness initiatives. Compared with the 2022 base year, the Company's water intensity decreased by 27%. Going forward, Sunon will continue to comply with applicable regulations of local governments, implement water management and oversight at each operating site, and deepen water-saving measures in order to fully put into practice its environmental commitment to the sustainable use of water resources.
Water Withdrawal in Recent Years
| 2022 | 2023 | 2024 | 2025 | |
|---|---|---|---|---|
| Water withdrawal (million liters) | 311.807 | 299.535 | 265.044 | 289.516 |
| Revenue (NT$ million) | 14,063.380 | 12,914.685 | 14,623.817 | 18,677.810 |
| Water intensity | 0.022 | 0.023 | 0.018 | 0.016 |
Note 1: Water intensity = water withdrawal (million liters) / revenue (NT$ million).
Note 2: The scope of water withdrawal disclosure covers all sites included in this report. As the India subsidiary operates from a leased office and water consumption data are unavailable, it is excluded from the inventory.
Water Use by Water Stress Level
| Water stress level | Low - Medium (10-20%) | Medium - High (20-40%) | Extremely high (>80%) |
|---|---|---|---|
| Covered sites |
Kaohsiung Headquarters Taipei Office Huizhou Sunon Plant Sunon SAS |
Beihai Sunon Plant Beihai Lizhun Plant Philippines Sunon Plant |
Kunshan Guangxing Plant Sunon Inc. |
| Water withdrawal (million liters) | 16.811 | 84.838 | 187.867 |
| Percentage of water withdrawal | 5.81% | 29.30% | 64.89% |
Note: As the India subsidiary operates from a leased office and water consumption data are unavailable, it is excluded from the inventory.