Sustainability Management

Energy and Greenhouse Gas (GHG) Emissions Management

Energy Use

The primary energy sources used by Chang Kuang include purchased electricity, gasoline, and diesel, with electricity accounting for the majority. In 2024, total fossil fuel consumption reached 91 GJ, mainly from gasoline used in company vehicles, followed by diesel for forklifts and backup generators.

To reduce dependence on fossil fuels, we plan to gradually introduce electric vehicles, adopt alternative fuels, and expand the use of clean energy in our operations.

Energy Use Overview (GJ)

 

 

 

 

Note: Energy conversion factors are based on Taiwan EPA’s GHG Emission Factor Management Table (v6.0.4).

GHG Inventory

To minimize environmental impact, Chang Kuang adopted 2023 as the base year for GHG inventory and conducts annual inventories in accordance with ISO 14064-1:2018, covering all major operational sites in Taiwan.

In 2024, Scope 1 emissions were 91.28 metric tons CO2e, while Scope 2 emissions were 854.57 metric tons CO2e, reflecting a 10.25% increase from the previous year due to the inclusion of a new facility (Plant II).

GHG Emissions Summary

Notes: Scope includes CO₂, CH₄, N₂O, and HFCs. Inventory boundary is based on operational control. Emission factors are derived from the Taiwan EPA. Data has not been verified by a third party.

 

Carbon Reduction Measures

Chang Kuang is actively implementing energy-saving and carbon reduction initiatives to lower its operational carbon footprint. We promote a green office culture and improve energy efficiency through various behavioral and operational practices. GHG inventories are conducted annually to monitor emissions and ensure timely response.

We also aim to collaborate with our supply chain to build a low-carbon and sustainable operation model.

Key Initiatives:

• Turn off lights in pantries, stairwells, and other common areas.

• Office lighting is switched off from 13:00–13:30.

• Air conditioning is allowed only when room temperature exceeds 27°C, and doors/windows must remain closed during use.

• Lighting and air conditioning in meeting rooms must be turned off after use.

• Non-essential equipment is shut down at the end of each workday.
  
  
  

  Waste Type	Treatment Method	Weight (Metric Tons)
  General domestic waste	Direct disposal (off-site incineration)	22.653
  Hazardous (toxic metals)	Direct disposal	0.025
  Hazardous (corrosive)	Direct disposal	0.011
  Hazardous (flammable liquids < 60°C flashpoint)	Direct disposal	0.021
  Hazardous (flammable solids)	Direct disposal	0.030
  Total Waste Generated	-	22.740

  
  
  

  Classification	Treatment Method	On-site	Off-site	Total (MT)
  Hazardous Waste	Incineration (w/ energy recovery)	-	-	-
  	Incineration (w/o energy recovery)	-	0.087	0.087
  Non-Hazardous Waste	Incineration (w/o energy recovery)	-	22.653	22.653
  Total		-	22.740	22.740

  Note: Waste is handled at all major facilities in Taiwan. Off-site treatment is performed by licensed third-party contractors.
  
  

  Water Resource Management

  In 2024, wastewater generated from the RO cleaning process was 100% reused for domestic applications (e.g., water towers), helping reduce total water withdrawal by 8.4% compared to 2023.

  Water Use Data
  

  Category	Source	Unit	2022	2023	2024
  Withdrawal	Groundwater	ML	2.896	8.823	8.081
  	Others	ML	0	0	0
  Discharge	Groundwater	ML	2.896	8.823	8.081
  Consumption	-	ML	0	0	0
  Revenue	NT$ billion		4.42	4.59	4.53
  Water Intensity	Withdrawal/Revenue	ML/NT$ billion	0.6552	1.9222	1.7839

  
  Note: The company does not use water in production processes. All water use is for non-industrial purposes and is discharged after treatment.