Greenhouse Gas Management

Greenhouse Gas Inventory

Starting in 2012, WNC has referenced ISO 14064-1 and the GHG Protocol to set organizational boundaries according to operational control laws. We established 2019 as the base year to calculate our greenhouse gas emissions and for verification purposes. To comply with the requirements of the Financial Supervisory Commission, in 2022 WNC included all its sites, include subsidiaries, offices, and other non-production locations, within the scope of its GHG emissions reporting. The goal is to compile GHG emissions inventories for all sites by 2023 and achieve 100% GHG inventory verification by 2024. In addition, the items in Scope 3 GHG emissions reporting were also expanded to include report items such as emissions from upstream/downstream transportation and employee commuting, on top of existing report items such as emissions from waste, business travel, and energy consumption. We use UL Turbo Carbon, a carbon management online platform, to manage our conduct carbon emissions data. Our headquarters is responsible for coordinating the inventory data and verification standards of each operational location. In 2022, our Scope 1 direct greenhouse gas emissions were 2,361.30 tonnes CO2e, Scope 2 (market-based) indirect greenhouse gas emissions were 61,350.44 tonnes CO2e, and Scope 3 indirect greenhouse gas emissions were 195,385.10 tonnes CO2e, and all these numbers have passed ISO14064-1 verification. Greenhouse gas emissions inventory results for the most recent four years are compiled in the table below.

WNC’s Scope 1 and Scope 2 (market-based) Greenhouse Gas Emissions for the most recent four years.

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

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

Category 2019 2020 2021 2022
Scope 1 emissions Stationary combustion, mobile combustion, manufacturing process emissions, and fugitive emissions 3,829.26 1,433.82 2,668.02 2,361.3
Scope 2 emissions Location-basedNote2 59,675.86 55,681.72 55,704.14 65,301.24
Market-based 59,675.86 55,681.72 55,704.14 61,350.44
Total Location-basedNote2 63,505.12 57,115.54 58,372.15 67,662.54
Market-based 63,505.12 57,115.54 58,372.15 63,711.74
Note 1: The scope of the GHG emissions calculations cover WNC headquarters, S1, S2, WNC Kunshan, Wistron NeWeb (Kunshan), WebCom (Kunshan), and the Vietnam plant. The Vietnam plant has been included in the calculation scope from 2020. Note 2: The emissions coefficients used by the Taiwan, China and Vietnam locations were announced by the respective local governments in those locations. The GWP year was “IPCC 2014 AR5”

Greenhouse Gas Reduction

According to the greenhouse gas emissions inventory results, the main source of WNC’s greenhouse gas emissions is externally purchased power, which is listed in Scope 2 emissions and accounts for over 90% of WNC’s total greenhouse gas emissions. Therefore, the main measures to reduce GHG emissions are improving energy usage efficiency and establishing renewable energy. Please refer to 3.2.3 Energy Management in this Report for details. Due to operational growth and production line expansion, WNC’s energy usage has been increasing year by year. To accurately reflect how changes in production capacity have impacted greenhouse gas emissions and reduction target attainment, emissions intensity is used to show the relationship between production capacity and emissions. WNC’s GHG emissions intensity has been decreasing in the most recent four years. In 2022, Scope 1 and Scope 2 emissions intensity was 0.67 tonnes CO2e/million NTD, which represents a decrease of 34.31% compared to the base year of 2019.

WNC’s Scope 3 Greenhouse Gas Emissions in the most recent three years
(Unit: tonnes CO2e)

Category 2020 2021 2022
ISO 14064-1: 2018 GHG Protocol
Category 3:
Indirect GHG emissions from transport
Upstream transportation and distribution Not calculated Not calculated 191,337.41
Downstream transportation and distribution
Business travel 26.69 317.94
Employee commuting Not calculated 539.66
Category 4:
Indirect GHG emissions from products used by the organization
Purchased goods and services Not calculated Not calculated Not calculated
Fuel- and energy-related activities
(not included in Scope 1 and Scope 2)
Not calculated 2,560.04 3,091.04
Waste generated during operations 83.39 92.00 99.06
Total Scope 3 emissions 83.39 2,678.73 195,385.10

Science Based Targets Initiative (SBTi)

To align its GHG reduction goals with global objectives of achieving net-zero emissions by 2050, WNC established absolute carbon reduction targets in 2022 based on the SBT framework. Using 2022 as the base year, WNC aims to achieve a 42% reduction in Scope 1 and Scope 2 emissions by 2030 and reach net-zero emissions by 2050. WNC will also participate in the SBTi in 2023 and formulate reduction goals and strategies for Scope 3 emissions that comply with SBT requirements.

Energy Management

Energy Usage

The primary source of energy for WNC’s sites is electricity, accounting for 98.68% of energy use. Diesel accounts for about 1.32%. 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.

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

WNC’s energy consumption for the most recent four years Note1 (Unit: kWh)

ItemNote2 2019 2020 2021 2022
Electricity Purchased powerNote3 92,587,195 102,418,722 103,360,665 115,664,827
Solar power for self-useNote4 363,371 369,084 392,465 952,116
Total power consumption 92,950,566 102,787,806 103,753,130 116,616,943
DieselNote5 464,162 365,485 2,695,473 1,559,194
Total energy usage 93,414,728 103,153,291 106,448,603 118,176,137
Note 1: The scope of the power consumption calculations covers WNC headquarters, S1, S2, WNC (Kunshan), Wistron NeWeb (Kunshan), WebCom Communication (Kunshan), WebCom Communication (Kunshan) – Nanjing Branch, and the Vietnam plant.
Note 2: WNC has not used natural gas or gasoline in the most recent four years.
Note 3: Electricity statistics for WNC (Taiwan) are compiled based on the utility billing cycle.
Note 4: Starting from 2022, all solar power generated at WNC sites in China will be listed as self-generated solar power for self-use. The self-generated solar power for self-use from 2019 to 2021 will be recalculated.
Note 5: According to the Heat Content of Energy Products table and the Abbreviation & Equivalents of Energy Units table in the Energy Statistics Handbook 2021 published by the Bureau of Energy, one liter of diesel oil generates 9.7692 kWh of power.

Renewable Energy

The use of renewable energy is one of WNC’s key carbon reduction strategies. In 2022, 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 Vietnam was realized in the same year. These newly installed panels began generating power by the end of 2022. Currently, WNC’s solar farms have a total installed capacity of 6.3 MW and have generated a total of 2,575,838 kWh of electricity, 952,116 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 electricity consumption at WNC was 6.65% in 2022, meeting its goal for the year.

To support the development of renewable energy, WNC has referenced the goals of the RE100 initiative. WNC aims to comply with RE100 requirements and achieve 100% renewable energy usage by 2040. WNC plans to apply to join RE100 in 2023.

WNC’s ratio of renewable energy usage to total power consumption in the most recent four years
Item 2019 2020 2021 2022
Renewable Energy (A) Self-generated solar power for self-use 363,371 369,084 392,465 952,116
I-REC 0 0 0 6,800,000
Subtotal 363,371 369,084 392,465 7,752,116
Total power consumption (B) 92,950,566 102,787,806 103,753,130 116,616,943
Ratio of renewable energy usage to total power consumption (A/B) 0.39% 0.36% 0.38% 6.65%

Energy 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 to establish clear improvement plans for lighting power, ventilation, air conditioning, and air compression systems. The energy conservation results are as follows.

WNC’s energy-saving measures in the most recent four yearsNote
System Item Unit 2019 2020 2021 2022
Illumination Energy conservation plans No. of plans 7 9 3 5
Electricity saved Gigajoule 808 41 51 101
Carbon reduction tonnes CO2e 145 6 9 19
Amount invested ten thousand NT$ 42.99 10.94 0 0.09
Exhaust Energy conservation plans No. of plans 5 6 12 5
Electricity saved Gigajoule 505 988 998 3,528
Carbon reduction tonnes CO2e 75 140 141 674
Amount invested ten thousand NT$ 91.45 55.50 272.17 791.53
Air conditioning Energy conservation plans No. of plans 2 3 11 17
Electricity saved Gigajoule 1,894 1,271 3,188 12,041
Carbon reduction tonnes CO2e 280 182 470 2124
Amount invested ten thousand NT$ 0 1.40 519.02 1,124.96
Air compression Energy conservation plans No. of plans 0 4 9 8
Electricity saved Gigajoule 0 1,332 6,713 2,746
Carbon reduction tonnes CO2e 0 192 1,029 420
Amount invested ten thousand NT$ 0 233.10 743.87 697.90
Production processes Energy conservation plans No. of plans 1 4 3 5
Electricity saved Gigajoule 428 184 1,127 1,641
Carbon reduction tonnes CO2e 96 26 193 247
Amount invested ten thousand NT$ 3.45 0 0 1,036.98
Other Energy conservation plans No. of plans 1 4 3 14
Electricity saved Gigajoule 21 69 621 1,660
Carbon reduction tonnes CO2e 3 10 106 268
Amount invested ten thousand NT$ 12.50 0.70 0 192.45
Total Energy conservation plans No. of plans 16 30 41 54
Electricity saved Gigajoule 3,656 3,885 12,698 21,717
Carbon reduction tonnes CO2e 599 555 1,948 3,752
Amount invested ten thousand NT$ 150.38 301.64 1,535.06 3,843.92

Note: 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.