Greenhouse Gas Management

In order to measure GHG emissions more accurately, SYSTEX conducts GHG Inventory according to the guidelines of “ISO 14064-1: 2018” and collects the inventory results to plan for future improvement plans. For the inventory, SYSTEX has set up a “GHG Inventory Committee” to prepare audit reports and to conduct data audit according to the “Internal Audit Management Procedures”, and then entrusted an independent 3-party to conduct external audit, ensuring its correctness and completeness. The boundary of GHG inventory is the headquarters building.

In 2021, the total GHG emissions of the SYSTEX headquarters building was 3,353.6 tonCO2e, of which the electricity consumption accounted for the highest proportion of emissions, reaching 82.88%.


SYSTEX conducts GHG verification every year according to the “Internal Audit Management Procedures” with the operation management unit as the internal auditor, and then entrusts a 3-party organization to conduct sampling verification. Therefore, the GHG inventory results are used to evaluate GHG emission reduction and improvement measures.

  • Category 1: Direct GHG emissions

SYSTEX counts emission sources in the headquarters building, including the sources of stationary combustion, mobile combustion and fugitive.

  • Category 2 – 6: Indirect GHG emissions

All emission sources of category 2 – 6 have been discussed by the “GHG Inventory Committee” according to the guidelines of “ISO 14064-1: 2018”, and should be defined as

significant emissions with a score over 30.

  • Emission Factor

The emission factors are based on the latest data published by the IPCC, EPA or relevant authorities.

2021 Greenhouse Gas Emissions
Category Emission Source Emissions




C1 Direct GHG emissions Stationary combustion 0 7.2465
Mobile combustion 4.0804
Fugitive (anthropogenic systems) 3.1661
C2 Indirect GHG emissions from imported energy Imported electricity 2779.5135 2779.5135
C3 Indirect GHG emissions from transportation Employee commuting and business travels Business travel by THSR 3.7448 35.4164
Business travel by airplanes 7.3439
Business travel by taxi 24.3277
C4 Indirect GHG emissions from products used by organization Purchased goods Indirect carbon footprint of electricity 511.0540 531.4660
Disposal of waste Disposal of general waste 20.4120
C5 Indirect GHG emissions associated with the use of products from the organization No significant emissions
C6 Indirect GHG emissions from other sources No significant emissions
Direct GHG Emissions (category 1)
Item CO2 CH4 N2O HFCs PFCs SF6 NF3 Total
(tonCO2e / Y)
3.9209 0.0396 0.1199 3.1661 0 0 0 7.2465
Proportion 54.11% 0.54% 1.66% 43.69% 0.00% 0.00% 0.00% 100.00%
GHG Emissions of all Categories (tonCO2e)