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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 42.19%, with a total of 17.55 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 46.76 million liters, representing a reduction of 15%, 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 9,037 metric tons of CO₂-equivalent, a reduction of as much as 37%, 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.
42.19 %
Renewable electricity ratio
46.76 million liters
Water withdrawal reduction
9037 tCO₂e
Category 1, Category 2 greenhouse gas emission reduction
Inspection results
2024 inventory results
In 2024, Sunon's total greenhouse gas emissions were 138,440.784 tCO₂e. Using total revenue (million NT$) as the intensity conversion unit, the emission intensity of Category 1 and Category 2 was 1.053 (tCO₂e/million NT$), and the emission intensity of Category 3 and Category 4 was 8.414 (tCO₂e/million NT$).
From the emission percentage of each category, Category 4 is the Company's main emission source (87.2%), originating from the indirect greenhouse gas emissions caused by the activities of purchasing raw materials. Therefore, in the future, the emissions of purchased raw materials will be assessed and other low-carbon procurement methods will be found to achieve greenhouse gas reduction.
The second largest emission source is Category 2 purchased electricity (9.5%). To reduce electricity consumption, in addition to advocating energy-saving policies in offices and factorys, the main energy-consuming equipment will be replaced or undergo energy-saving technological transformation; At the same time, the annual purchase amount of renewable energy (photovoltaics) for production use will be gradually increased.
Compared to the base year of 2022, this year’s greenhouse gas emissions were reduced by 24.4%. The emission intensity of Category 1 and Category 2 decreased by 39%, while the emission intensity of Category 3 and Category 4 decreased by 25%.
These reductions were mainly achieved through the replacement or upgrade of major energy-consuming equipment with more energy-efficient technologies, as well as an increased use of renewable energy.
• Greenhouse Gas Emissions Analysis Table (Unit: tCO₂e)
| Greenhouse gas emissions | 2022 | 2023 | 2024 |
|---|---|---|---|
| Category 1 | 2,148.659 | 2,337.827 | 2,231.356 |
| Ratio (%) | 1.2 | 0.9 | 1.6 |
| Category 2 | 22,281.158 | 20,473.797 | 13,161.032 |
| Ratio (%) | 12.2 | 8.1 | 9.5 |
| Category 3 | 1,830.377 | 1,249.719 | 2,331.507 |
| Ratio (%) | 1.0 | 0.5 | 1.7 |
| Category 4 | 156,843.387 | 228,971.163 | 120,716.889 |
| Ratio (%) | 85.6 | 90.5 | 87.2 |
| Total Greenhouse Gas Emissions | 183,103.581 | 253,032.506 | 138,440.784 |
|
Category 1 and Category 2 Emission Intensity (tCO₂e/Million NT$ Revenue) |
1.737 | 1.766 | 1.053 |
|
Category 3 and Category 4 Emission Intensity (tCO₂e/Million NT$ Revenue) |
11.283 | 17.826 | 8.414 |
Note 1: The inventory scope of Category 3 includes upstream raw material transportation (production sites) and business travel; the inventory scope of Category 4 includes product procurement and waste disposal and transportation (production sites).
Note 2: Category 5 and category 6 were not included in the inventory because they were identified as non-significant, so they are not shown in the above table.