Climate Change
Greenhouse Gas Inventory
Climate change has emerged as one of the most critical global challenges, with greenhouse gas (GHG) emissions playing a key role. In fulfillment of its corporate social responsibility, BoardTek Electronics has voluntarily disclosed its Scope 1 and Scope 2 GHG emissions since 2017. In 2023, the company implemented the ISO 14064-1 GHG inventory system and obtained certification in 2025, with 2023 designated as the base year. The emission data is presented in the table below.
Greenhouse gas emission statistics in the past three years
| project | unit | 2023 | 2024 | 2025 |
| Scope 1 (Category 1): Direct greenhouse gas emissions | mt-CO2e | 4,051.54 | 4,731.01 | 5,739.83 |
| Scope 2 (Category 2): Energy indirect greenhouse gas emissions | mt-CO2e | 21,019.28 | 21,937.1 | 24,632.83 |
| Total Scope 1 + Scope 2 emissions | mt-CO2e | 25,070.82 | 26,668.11 | 30,372.6 |
| Operating income (individual) | million turnover | 2,892 | 3,616 | 4,950 |
| Greenhouse gas emission intensity (Scope 1 + Scope 2 emissions/operating income (individual)) | mt-CO2e／ million turnover | 8.67 | 7.38 | 6.14 |
| Scope 3 (Category 3-6): Other indirect greenhouse gas emissions | mt-CO2e | 5,639.13 | 6,675.2 | 8,204.95 |
| Audit Report and Inspection Opinions |  |  |
Note:
- The GHG inventory adopts the operational control approach. Starting from 2024, the inventory has been conducted in accordance with ISO 14064-1:2018 and was externally verified by a third-party verifier in July 2024, with a certificate obtained. The organizational boundary covers BoardTek Electronics' Longtan facility.
- The GHGs included in the inventory are: Nitrous Oxide (N2O), Methane (CH4), Carbon Dioxide (CO2), Hydrofluorocarbons (HFCs), Perfluorocarbons (PFCs), Sulfur Hexafluoride (SF6), and Nitrogen Trifluoride (NF3).
- Scope 1 emissions include gasoline and diesel. Gasoline is used for company vehicles, while diesel is used for process heat transfer boilers, HVAC steam boilers, and emergency generators. GWP values are based on the IPCC Sixth Assessment Report (AR6), published in 2021.
- Scope 2 emissions primarily come from purchased electricity. As the official 2024 emission factor for electricity had not yet been announced during third-party verification, the emission factor of 0.474 kg CO2e/kWh published by the Bureau of Energy, Ministry of Economic Affairs in 2022 was used.
- All emission factors used are based on the latest officially announced GHG emission factors published by Taiwan's Environmental Protection Administration (EPA).
In 2025, Allied Circuit's Scope 1 emissions (primarily gasoline and diesel) were 5,739.83 tCO2e, and Scope 2 (purchased electricity) was 24,632.83 tCO2e. The total of 30,372.67 tCO2e is a 13.89% increase from 2024. However, GHG intensity (Scope 1+2) decreased by 29.22% from the 2023 base year to 6.14 tCO2e/million revenue. Scope 3 emissions (mainly purchased goods and solid/liquid waste disposal) totaled 8,204.95 tCO2e.