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Greenhouse Gas Inventory

WNC has referenced ISO 14064-1: 2018 and the GHG Protocol to set organizational boundaries according to operational control laws. We established 2022 as the base year to calculate our greenhouse gas emissions and for verification purposes. In 2023, WNC formulated goals superior to those initiated by the Financial Supervisory Commission in 2022 in the TWSE Listed and TPEx Listed Companies Sustainable Development Roadmap, accelerating the process of greenhouse gas inventories. By the end of January 2024, the greenhouse gas inventory operations for all existing sites had been completed, and verification of greenhouse gas inventory for WNC and all companies included in its consolidated financial statements are expected to be completed in 2024.


In 2023, our Scope 1 direct greenhouse gas emissions were 1,831.52 tonnes CO₂e, Scope 2 (market-based) indirect greenhouse gas emissions were 55,108.07 tonnes CO₂e, and Scope 3 indirect greenhouse gas emissions were 3,708,933.68 tonnes CO₂e. The 2023 GHG inventory result has been verified by a third-party agency, and a verification statement has been obtained.

WNC's Scope 1 and Scope 2 Greenhouse Gas Emissions for the most recent four yearsNote 1 (Unit: tonnes CO2e)

Category 2020 2021 2022 2023
Scope 1 emissions Stationary combustion, mobile combustion, manufacturing process emissions, and fugitive emissions 1,433.82 2,668.02 2,361.30 1,831.52
Scope 2 emissions Location-basedNote 2 55,681.72 55,704.14 65,301.24 65,257.07
Market-based 61,350.44 55,108.07
Total Location-basedNote 2 57,115.54 58,372.15 67,662.54 67,088.59
Market-based 63,711.74 56,939.59
  • Note 1: In 2023, the scope of the GHG emissions calculations covered WNC headquarters, S1, S3, WNC (Kunshan), Wistron NeWeb (Kunshan), WebCom Communication (Kunshan), WebCom Communication (Kunshan) - Nanjing Branch, Vietnam plant, and WNC subsidiaries in the US and UK.
  • Note 2: In 2023, the emission factors for Scope 1 were sourced from the Environmental Protection Agency's announced Greenhouse Gas Emission Factor Table (6.0.4), with the latest AR6 values selected for all greenhouse gases' Global Warming Potential (GWP) values. The carbon emission factors for Scope 2 were derived from the latest values announced by the local government.

WNC's Scope 1 and Scope 2 (market-based) Greenhouse Gas Emissions in recent years

  • Unit for calculating emissions intensity：tonnes CO₂e／million NTD

WNC's Scope 3 Greenhouse Gas EmissionsNote for the most recent three years (Unit: tonnes CO₂e)

Category 2021 2022 2023
Greenhouse Gas Inventory Standard
ISO 14064-1: 2018		 GHG Protocol
Category 3: Indirect GHG emissions from transport Upstream transportation and distribution - 191,337.41 469.96
Downstream transportation and distribution 47,383.64
Business travel 26.69 317.94 697.94
Employee commuting - 539.66 711.59
Category 4: Indirect GHG emissions from products used by the organization Purchased goods and services - - 2,525,063.79
Capital goods - - 110,307.55
Fuel- and energy-related activities (not included in Scope 1 and Scope 2) 2,560.04 3,091.04 11,344.47
Waste generated during operations 92.00 99.06 1,597.10
Upstream lease assets - - 6,601.74
Category 5: Indirect GHG emissions from products produced by the organization Processing of sold products - - 80.81
Use of sold products - - 989,580.55
End-of-life treatment of sold products - - 5,268.67
Downstream lease assets - - 6,092.87
Franchise operations - - -
Investment franchise - - 3,732.99
Total Scope 3 emissions 2,678.73 195,385.10 3,708,933.68
  • Note: The scope of the Scope 3 GHG emissions inventory covers WNC headquarters, S1, S3, WNC (Kunshan), Wistron NeWeb (Kunshan), WebCom Communication (Kunshan), WebCom Communication (Kunshan) - Nanjing Branch, Vietnam plant. The subsidiaries in the US, UK, Germany and Japan inventoried only the business travel category for Scope 3 GHG emissions inventory. In 2023, the emissions data for Scope 3 were classified according to the requirements of the GHG Protocol or ISO 14064-1. Coefficient sources vary based on the location of the facility. For Taiwan-based sites, we utilize information from the Product Carbon Footprint Database. For sites outside of Taiwan, we rely on data from the Ecoinvent 3.9.1 and EF database 3.1. Additionally, for categories related to air transportation, we use data from the ICEC database.

Joining the Science Based Targets Initiative (SBTi)

In response to international sustainability trends, WNC signed the Science Based Targets initiative (SBTi) commitment letter in 2023. Using 2022 as the base year, WNC has pledged to achieve a 42% reduction in Scope 1 and Scope 2 emissions by 2030 and reach net-zero emissions by 2050. To meet the goals set by SBTi and address carbon reduction demands, we have conducted a comprehensive inventory of greenhouse gas emissions across all sites.

Energy Management

Energy Usage

WNC’s main energy source across its sites is electricity, accounting for approximately 98.79% of its usage, with the remaining 1.21% coming from diesel, gasoline, and a small amount of natural gas. The usage of diesel primarily includes two aspects: At sites in Taiwan and Vietnam, a small amount of diesel fuel is used to power emergency generators during power outages. At sites in China, due to low winter temperatures, diesel fuel is used for heating. Currently, the usage of diesel is primarily to ensure energy supply stability and operational continuity in specific situations. Meanwhile, we are exploring alternative solutions to further reduce our reliance on diesel and promote more environmentally friendly energy usage. Natural gas is only used in the employee cafeterias at certain sites in Taiwan.

WNC's power usage and power usage intensity for the most recent four yearsNote

Note: The power usage intensity goals listed here do not apply to WNC subsidiaries in the US, UK, Germany and Japan. The power consumption data in this table does not include WNC subsidiaries in the US, UK, Germany and Japan.

WNC's energy usage in the most recent four yearsNote 1

Item Unit 2020 2021 2022 2023
Electricity Purchased powerNote 2 Purchased non-renewable energy (A) Kilowatt hours (kWh) 102,418,722 103,360,665 109,001,232 105,000,900
Gigajoule (GJ) 368,707 372,098 392,404 378,003
Purchased renewable energy (B) (kWh) 0 0 6,800,000 15,000,000
Gigajoule (GJ) 0 0 24,480 54,000
Solar Power Self-generated renewable energy for self-use (C) (kWh) 369,084 392,465 952,116 5,320,038
Gigajoule (GJ) 1,329 1,413 3,428 19,152
Total
power consumption		 Kilowatt hours (kWh) 102,787,806 103,753,130 116,753,348 125,320,938
Gigajoule (GJ) 370,036 373,511 420,312 451,155
Energy usage percentage ((B+C) / (A+B+C)) % 0.36% 0.38% 6.64% 16.21%
DieselNote 3 (D) Kilowatt hours (kWh) 365,485 2,695,473 1,559,194 871,618
Gigajoule (GJ) 1,316 9,704 5,613 3,138
Natural gasNote 3 (E) Kilowatt hours (kWh) 244,425 306,432 338,932 374,980
Gigajoule (GJ) 880 1,103 1,220 1,350
GasolineNote 3 (F) Kilowatt hours (kWh) 228,603 188,314 197,999 291,482
Gigajoule (GJ) 823 678 713 1,049
Total
renewable energy usage (B+C)		 Kilowatt hours (kWh) 369,084 392,465 7,752,116 20,320,038
Gigajoule (GJ) 1,329 1,413 27,908 73,153
Total
non-renewable energy usage (A+D+E+F)		 Kilowatt hours (kWh) 103,257,236 106,550,883 111,097,356 106,538,980
Gigajoule (GJ) 371,726 383,583 399,950 383,540
Total energy usage Kilowatt hours (kWh) 103,626,320 106,943,348 118,849,472 126,859,018
Gigajoule (GJ) 373,055 384,996 427,858 456,692
  • Note 1: The scope of the power consumption calculations covers WNC headquarters, S1, S3, WNC (Kunshan), Wistron NeWeb (Kunshan), WebCom Communication (Kunshan), WebCom Communication (Kunshan) - Nanjing Branch, Vietnam plant, and WNC subsidiaries in the US, UK. Subsidiaries in Germany and Japan adopt a work-from-home model and are therefore not included in the calculation.
  • Note 2: Purchased power statistics for WNC are compiled based on the utility billing cycle. Purchased power = Purchased non-renewable energy + purchased renewable energy (I-REC).
  • Note 3: According to the Heat Content of Energy Products table and the Abbreviation & Equivalents of Energy Units table in the Energy Statistics Handbook 2022 published by the Bureau of Energy, one liter of diesel oil generates 9.7692 kWh or 0.0351 GJ of power, one cubic meter of natural gas generates 10.4670 kWh or 0.0377 GJ of power, and one liter of gasoline generates 9.0714 kWh or 0.0326 GJ of power.

Energy Conservation Management

In addition to enhancing the energy resource use efficiency of our product design, R&D and production processes, we have also implemented energy conservation and carbon reduction measures at our sites. These measures include recording and analyzing daily energy consumption, improving electricity usage efficiency, improving piping and electrical wiring, improving and/or replacing old facility equipment, and implementing energy conservation programs.

 

WNC has implemented the ISO 50001 energy management system at all sites. Following the ISO 50001 management system framework, we carry out a process of identifying major energy-consuming equipment. We list energy-saving action plans for each site, regularly engaging departments internally for discussions. We establish clear improvement plans for lighting power, ventilation, air conditioning, and air compression systems. Finally, we conduct internal energy management reviews to evaluate the effectiveness of implementation, continuously refining our management procedures and improvement measures for the next fiscal year. Additionally, we conduct annual energy-saving education and internal audit activities at each site. These initiatives aim to continuously educate and update our employees on energy-saving concepts, contributing together to the sustainable development of the company.

WNC’s energy-saving measures in the most recent four yearsNote 1

System Item Unit 2020 2021 2022 2023
Total Energy conservation plans No. of plans 30 41 54 53
Electricity saved GJ 3,885 12,698 21,717 8,784
Carbon reduction tonnes CO₂e 555 1,948 3,752 1,310
Amount invested thousand NT$ 3,016.4 15,350.6 38,439.2 5373.1
  • Note 1: The amount of electricity saved is estimated based on the running hours of the equipment as well as the difference in power usage before and after improvements were made to the equipment.

    The amount of carbon emissions reduction is calculated annually using the latest carbon emission factors. Additionally, different electricity carbon emission factors are adopted for this calculation based on the implementation region of the energy-saving program. Carbon emission factors used in 2023: Taiwan sites: 0.494 kgCO₂e/kWh; China sites: 0.5568 kgCO₂e/kWh; Vietnam site: 0.6766 kgCO₂e/kWh

Project Spotlight 1: Installation of Energy Management Platform and Related Modules Development and Application

S3 Plant was completed and put into operation in 2023, planned as a smart factory area, aiming to enhance the efficiency of energy data collection and optimize energy allocation through comprehensive infrastructure construction. The plant has installed multiple circuit meters, with over 100 meters installed, and has set up an energy management platform along with the development of related modules and applications. These include not only plant facilities but also major production equipment. Currently, the main applications focus on energy-saving measure management and tracking abnormal power consumption, effectively reducing unnecessary energy losses. Currently, we are planning and developing related modules. In terms of factory power consumption, efficiency indicators can be established for the chiller and air compressor systems, which are the two largest energy-consuming equipment types in the facility. In terms of manufacturing process electricity usage, we integrate production data to generate daily unit energy consumption reports for each product. This allows us to identify exemplary machines with high output and low energy consumption. Additionally, we evaluate the replacement of aging equipment with low output and high energy consumption. In the alarm dispatch module, we define alert thresholds based on equipment characteristics and past operational records. When abnormal electricity usage occurs, an alert notification is immediately sent to the responsible unit, allowing prompt corrective action to be taken at the source.

Project Spotlight 2: Introducing Green Buildings at Our New Sites

When the S3 Plant was planned and constructed in 2019, the core concepts of the company’s sustainable development was the initial consideration. It was designed following the standards of green building certification, taking into account four major aspects: ecology, energy conservation, waste reduction, and health. Based on these, strict standards were developed according to nine major indicators for evaluation, aiming to create a building with minimal consumption of the Earth’s resources, minimal waste generation, and ecological, energy conservation, and health characteristics. The S3 Plant was planned to obtain bronze level Taiwan Green Building Label (EEWH) Certification. In 2021, it received the Candidate Green Building Certificate (Bronze Level), with the aim of obtaining the certificate in 2024, becoming WNC’s first green factory. It is hoped that this project experience can be continued and applied to future new plant construction. The second phase of the Vietnam plant was built with the aim of achieving the silver level requirements of the U.S. Green Building Council’s Leadership in Energy and Environmental Design (LEED) certification program in 2023.


At the same time, we continue to promote energy conservation and carbon reduction in our daily operations. In addition to encouraging the use of online meetings instead of physical ones and opting for low-carbon transportation methods for commuting or business trips, we have also set up bicycle-exclusive parking areas in parking lots.

Renewable Energy

Increasing the proportion of renewable energy usage is a key strategy for WNC’s carbon reduction efforts. We not only continue to expand self-generated solar power installations but also plan to incrementally increase the proportion of renewable energy usage through long-term green energy purchasing contracts and Renewable Energy Certificates (RECs). WNC become a member of RE100 in 2023, making it the first network communications company in Taiwan to join the initiative. We aim to lead the value chain in responding to this initiative and collectively work towards achieving 100% renewable electricity usage by 2040. In recent years, WNC installed additional rooftop solar panels at its primary production sites, and a further plan involving the installation of additional solar panels at plants in Kunshan and new installation of solar panels at the plant in Vietnam was realized in 2022. These panels began generating power by the end of 2022. By the end of 2023, our new S3 plant commenced usage of solar panels. We are also continuously evaluating the feasibility of installing additional solar panels at other plants. Up until now, WNC’s solar farms have a total installed capacity of 7.3 MW and have generated a total of 7,000,939 kWh of electricity, 5,320,038 kWh of which was for self-use. In addition, WNC has also purchased International Renewable Energy Certificates (I-REC). The ratio of renewable energy use to total energy usage at WNC was 16.02% in 2023, meeting the goal for the year.