Environmental Sustainability

GHG Emissions

Issue Date:2023/09/13

GHG Management System

In 2008, Chunghwa Telecom took a leading role in the industry by conducting a greenhouse gas (GHG) inventory covering 100% of our operational sites. We used the Greenhouse Gas Protocol developed by the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD) as the inventory tool to establish a GHG emissions inventory. We obtained a verification statement from a third-party verifier (SGS-Taiwan), becoming the first telecommunications company in Taiwan to obtain ISO 14064-1 verification, which serves as the information foundation for promoting GHG reduction and carbon management.


Greenhouse Gas (GHG) Emissions

The total greenhouse gas (GHG) emissions by CHT in 2022 is 714,098.036 t-CO2e, which include CO2, CH4, N2O, HFCs, PFCs, SF6 and NF3. Now that we did not emit PFCs, SF6, NF3, the values thereof are 0.

  • The primary energy source for CHT operation is electricity. The GHG emissions mainly fall in the Scope 2 (purchased electricity), accounting for 97.31%, and in the Scope 1 from transport work vehicles, accounting for 2.69% only. There was a slight decrease in the total emissions in 2022, dropped by 9.64% compared with 2020 levels, thanks to implementation of various energy efficiency and carbon reduction measures.
  • Scope 3 (Categories 3-6): 1,828,060.8890 t-CO2e; total GHG emissions of Scope 1, 2, and 3 (Categories 1-6): 2,542,158.925 t-CO2e
Scope 1 and 2 Emissions
Year 2019 2020 2021 2022
Direct Emissions (Scope 1)(t-CO₂e) 28,455.5921 22,192.9316 17,887.470 19,185.3151
Note 1
Indirect Emissions (Scope 2)(t-CO₂e) 795,295.4952 768,128.0670 716,979.259 694,912.721
Note 2
Total Emissions (Scope 1 + Scope 2)(t-CO₂e) 823,751.0873 790,320.9986 734,866.729 714,098.036
Emission Intensity(t-CO2e/million NTD) 4.0 3.8 3.5 3.3
Coverage as percentage in revenue(t-CO₂e) 100% 100% 100% 100%

Note 1: Analysis for the slight increase in Scope 1 in 2022:

  • The number of people returning to work increased each day thanks to the pandemic ease-up with the work hours of employees raised by about 20.2% compared with 2021, resulting in increased methane emissions, estimated based on the escape of septic tanks
  • Some generators in operation for more than 10 hours due to the power outage of Taipower, resulting in an increased fuel consumption
  • The business growth of the Company from a revenue of NT$178.8 billion in 2021 to NT$182.3 billion in 2022, with a performance increase by 1.96%, along with 1,512 employees acquired, resulting in an increase in Scope 1 emissions

Note 2: An emission target of 740,000 metric tons, along with the challenge target of 710,000 metric tons, was set for 2022.

Scope 3 Emissions

In 2022, In line with ISO 14064-1:2018 and with reference to the GHG Protocol Corporate Value Chain (Scope 3), Chunghwa Telecom investigated the 15 GHG emissions from the related business activities in the upstream and downstream to inventory the Scope 3, 4, and 5, and the verification statement was obtained from TUV SUD Taiwan.

Scope 3 emissions 2019 2020 2021 2022
Total Emissions(t-CO₂e) 1,221,778.452 2,674,442.9309 1,916,216.5782 1,828,060.8890
Categories Accounted 7 15 15 15
2022 Scope 3 Emission
Operations Value Chain Category Description Emissions(t-CO₂e)Note1
Not include Consigned ProductsNote2 Include Consigned ProductsNote2
Upstream 3 Upstream transportation and distribution 277.97 646.60
Downstream transportation and distribution 0.20 901.86
Business travel 1,174.65 1,174.65
Employee commuting 10,203.88 10,203.88
4 Purchased goods and services 553,795.08 752,416.69
Capital goods 344,733.39 344,733.39
Fuel- and energy-related activities 124,456.91 124,456.91
Waste generated in operations 943.59 943.59
Upstream leased assets 13,045.93 13,045.93
Downstream 5 Use of sold products 355,972.84 460,657.59
End-of-life treatment of sold products 303.19 1,403.50
Downstream leased assets 115,519.72 115,519.72
Processing of sold products 0 0
FranchisesNote3 0 0
Investments 1,956.57 1,956.57
Total emissions 1,522,383.92 1,828,060.89


  1. This table presents the emissions of each category based on the verification statement issued by the third party.
  2. In 2022, Chunghwa Telecom expanded its inventory to the products consigned for sale at the stores in the value chain, which generated 305,676.97 metric tons of carbon emissions.
  3. Due to the fact that the franchisee was unable to provide accurate activity data during the verification period, so it was not verify and displayed on the verification statement for the time being. the quantification of this value was completed after July, and the value was 3,052.00 t-CO₂e. Therefore, after adding the Franchises, the total emissions of “Not include Consigned Products” and the “Include Consigned Products” are 1,525,435.92 t-CO₂e and 1,831,112.89 t-CO₂e. Chunghwa Telecom promises to solve the problem next year.
  4. In 2022, the emission target was set at 1.9 million metric tons, with a challenge target of 1.86 million metric tons, by Chunghwa Telecom.

Energy Saving and Carbon Reduction Plan and Results

To cope with the climate change risks and introduce more benefits from energy saving and carbon reduction, Chunghwa Telecom formulated tangible energy saving and carbon reduction action plans. In addition to active energy efficiency improvement, through autonomous environmental measures and practices, it compiles and analyzes energy data for a science-based management.

Item Description
Energy Efficiency Improvement
  • Consolidation of IDC spaces for an effective utilization
  • Adoption of high-efficiency and energy-saving equipment to elevate the energy efficiency of IDCs
  • Reduction of the PUE of IDCs from 1.67 in the base year of 2020 annually to the target of a PUE of 1.50 or lower by 2030
  • Green building materials adopted for newly constructed IDCs or hostels
  • Recovery systems for rainwater, groundwater, and HVAC condensate installed for water resource recycling
  • Lighting of public areas in office buildings replaced with LED lights
Green Energy Introduction
  • Cumulative 4,658.8 kWp of installed PV capacity as of 2022
  • 24,029 Taiwan Renewable Energy Certificates (T-RECs) obtained in 2022
Telecom Facility Energy-Saving Plan
  • Stipulation of energy efficiency specs for equipment: stipulation of energy efficiency specs for the equipment necessary for telecom services in the procurement specifications
  • Energy-saving measures for telecom facilities: adjustment to equipment capacity as appropriate and equipment integration to reduce the overall power consumption of telecom facilities
  • Base station energy-saving: procurement of base stations with higher energy efficiency to replace the energy-demanding counterparts
  • Equipment replacement: Active introduction of NGN equipment to replace the old PSTN equipment and cut energy consumption
Autonomous Environmental Protection
  • First-and-only: Banqiao IDC certified to ISO 14046
  • Phase-out of old vehicles with newly procured energy efficient green vehicles; introduction of electric vehicles
  • Assistance in establishment of YouBike Station at the Xinyi-Hangzhou intersection
  • Clean Homeland, Energy Efficient Offices, Car-free Day, Office Document Automation System (ODAS)
  • Energy Efficiency Service: to assist the SMEs and the vulnerable groups in energy efficiency improvement
  • Industrial waste recycling target setting
Value-added Products & Services
  • First-and-only in the industry: Carbon neutral Syntrend Store with EPA Carbon Label for Services as well as certifications to ISO 14067 and PAS 2060
  • E-bill: promoted along with business marketing for environmental protection and carbon reduction
  • E-invoice: invoices stored in the cloud permanently that saves materials and labor, along with tax-saving and penalty-free from the government
  • Intelligent Energy Network Service and promotion of energy-efficient products
  • Mobile device recycling: via the trade-in activity at the stores and recycle bins installed to the service centers in line with the promotion for waste recycling in 2022, achieving a reuse percentage of 90.19%
  • Green Stores: 447 service centers nationwide transformed into “Green Stores”
  • Collaboration with SALcE to promote sustainability partner (products, services, and organizations) certification