Our Focuses｜Environmental Sustainability｜Water Management

Environmental Sustainability

Winbond has worked alongside countries and companies from around the world to implement green sustainability measures, proactively reducing the impact that our business operations have on the environment. Apart from having no major violations of environmental laws, Winbond has also committed innovative new technologies and significant resources into adopting measures for reducing energy consumption and carbon emissions, improving resource utilization rates, and improving waste and emissions management, taking concrete action to implement our sustainable development blueprint.

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SDGs

Cumulative energy savings from 2019 to 2023 reached

456

GWh

The water recovery rate of the whole plant reached

82.2

Removal rate for VOCs in 2023 reached

Energy and Carbon Emissions Management

Water Management

Air Pollution Control

Waste Management

Environmental Investment

Water Management

Water Efficiency Policy

Winbond Electronics follows the vision “Be a hidden champion in providing sustainable semiconductors to enrich human life”, implements the responsibility of green manufacturing, reduces the impact on the environment in the process of enterprise operation. We are committed to the goal of social responsibility and sustainable operation.
The Company's water efficiency policy is as follows:

All employee participate in water conservation and promote awareness of water management.
Prioritize water-saving designs and continuously improve water efficiency.
Recycled and reused water resources to ensure the achievement of waterefficiency targets.
Comply with government regulations and regular review water management.

Water Resource Management

1.Identify water-saving hot spots: identify key links in the production process that consume large amounts of water, and continue to look for water-saving and recycling opportunities in the company.

2.Water-saving action plan: Implement a series of action plans, such as adopting water-saving designs, optimizing production processes, and improving water efficiency of facilities.

3.Water pollution prevention and control: Minimize the use of harmful substances, reduce the source of process wastewater, separate wastewater for proper treatment, reduce or remove pollutant emissions, and comply with regulatory standards.

4.Water-saving goals: Ensure water safety in the communities where we operate. Set specific water-saving and reduction goals to help us advance various water-saving action plans in an orderly manner and ensure that the results are measurable and traceable.

5.Water recycling measures: Continue to improve the recycling rate of recycled water, develop diverse alternative water sources, and undertake actions to reduce water withdrawal and consumption.

6.Sustainable culture: Establish a culture of responsibility for environmental protection among all employees, provide environmental education and training to management, employees, suppliers/contractors, and expand value chain cooperation, collectively safeguarding the integrity of terrestrial, freshwater, and marine ecosystems and sharing to create a beautiful and sustainable environment .

2023 Target Achievement

2023, Metric for measuring water intensity per product unit, Winbond averaged 170 liters of water usage to produce one 12-inch wafer photomask layer.

Indicators and Targets	2023 Targets	2023 Achievements
Fab Water Recycling Rate (%)	≧80%	82.2%

Note:

1. Fab Water recovery rate: The statistical scope of the data is Winbond Taiwan factory.

Water resources management goal: Before 2030, the annual Fab water recovery rate will reach more than 80%.

Achieve 2023 water consumption reduction target

— 2023 Water-Saving Measures (Unit: megaliters /year) —

Item	Water Conservation Measures	Explanation of Water Conservation Measures	Water Saving
1	Water-saving of UPW (Ultra-Pure Water) System	Water consumption parameters adjusted for production machines	210.6
2	SW water saving for exhaust gas treatment equipment	Adjustment for exhaust gas treatment equipment	125.3
3	Water-saving and drought-resistant measures during water restriction periods	Reduction of cooling tower discharge water volume and increase in wastewater treatment system recovery capacity	31.9
4	Optimization of external air conditioning box water washing system	Installation of water-blocking plates to reduce splashing losses in washing equipment	20.4
5	Optimization and improvement of condensate water recovery in Gas Yard evaporator	Improvement of evaporator air-cooled de-icing system to enhance recovery of ice-condensed water	1.9
6	Optimization of fire system environmental pipeline leak prevention	Reduction of water leakage rate by improving environmental pipeline damage in fire system	0.3

— Water Withdrawal, discharge and total net fresh water consumption（Unit: megaliters）—

Water Resources Types	2020		2021		2022		2023
Water Resources Types	Taiwan Region	Subsdiary	Taiwan Region	Subsdiary	Taiwan Region	Subsdiary	Taiwan Region	Subsdiary
Total Water Withdrawal	3,633	403	3,293	391	4,131	410	4,356	396
Water discharge	2,417	318	2,318	319	3,172	312	2,924	317
Total net fresh water consumption	1,216	85	975	72	959	98	1,432	79

Note: The water source is tap water. The scope of data statistics covers Winbond Taiwan and consolidated financial reporting subsidiary (Nuvoton Taiwan)

— Ultra-pure water usage（Unit: cubic meters ）—

Water Resources Types	2020		2021		2022		2023
Water Resources Types	Taiwan Region	Subsdiary	Taiwan Region	Subsdiary	Taiwan Region	Subsdiary	Taiwan Region	Subsdiary
Ultra-pure water	3,638,320	481,399	3,617,150	498,589	3,622,902	485,106	4,070,924	451,900

Note: The scope of data statistics covers Winbond Taiwan and consolidated financial reporting subsidiary (Nuvoton Taiwan)

Water Recycling

Winbond continues to increase water recycling rates. In 2023, the overall plant recycled approximately 82.2% of its water and 90.1% of its process water (meeting the science park’s commitment under the environmental impact assessment to recycle more than 77% of all water used, and more than 85% of all process water used). Winbond implemented 6 new water conservation measures in 2023 that increased total water saved by 390,000 cubic meters.

Accumulated water savings between 2018 and 2023 has reached 4,000 megaliters, equivalent to 0.8 times the Baoshan Reservoir’s capacity.

Water Recycling Performance in Past Years

Wastewater Management

Winbond’s wastewater treatment facilities are designed to collect up to 20 types of waste liquids through separate pipelines standardizing wastewater quality. Each wastewater type is then treated through 11 distinct wastewater treatment facilities. Operating and discharge permits are applied for pursuant to the Water Pollution Control Act and the Soil and Groundwater Pollution Remediation Act.

Testing is conducted by a laboratory accredited by the Environmental Analysis Laboratory twice a year to confirm that the discharge water quality satisfies CTSP’s influent standards. Additionally, in order to reduce the environmental burden of the wastewater treatment facility, and to reduce the use of chemical products, Winbond also collect and treat waste liquids from the washing towers, cooling towers, process cooling water, and recycled soft water from production processes, reusing this treated waste liquid in secondary water applications throughout the site Apart from these measures, Winbond has continued to promote improvements to our water pollution prevention facilities, reduced our pollutant biochemical oxygen demand (BOD), chemical oxygen demand (COD), and the amount of suspended solids (SS) and sludge.

Measured COD, SS and BOD values for 2023 were far below the CTSP influent standards.