Greenhouse Gas Emissions
The total greenhouse gas emissions in 2020 were 790,320.9986 t-CO2e, consisting of six types of greenhouse gases, namely, CO2, CH4, N2O, HFCs、PFCs, and SF6.
As the operations of Chunghwa Telecom primarily use electrical power, the greenhouse gas is mainly scope 2 emissions (purchased electricity), accounting for a percentage of 97.19%. Scope 1 emissions, which account for 2.81%, are mostly generated by workplace emission sources. Through implementation of various energy-saving carbon reduction measures, the total emissions in 2020 demonstrated a slight decrease as a result.
To facilitate the decrease of greenhouse gas emissions, Chunghwa Telecom has actively built solar photovoltaic systems in recent year. We also acquired 105 Taiwan Renewable Energy Certificates (T-REC), reducing carbon emissions by 53.45 kg-CO2e in 2020.
Water usage at Chunghwa Telecom is mostly domestic. Apart from bathroom use, air conditioner cooling accounts for another major water use. Given the ongoing increase in business activities and manpower, there is limited room for water reduction besides the recovery of rainwater and cooling water.
We benchmarked the 2012 water usage as the standard, and now control the annual growth of water usage to no more than 2%. In addition to a new water leakage detection feature in products, we have also included Company water consumption in the EARTH system. Centralized water bill payment is done through the EARTH “water bill management” function to reduce the printing of water bills. Managers can use the system to search, generate trend charts and report forms, and provide exception reports to avoid mistakes in billing and meter reading. Managers can also review the situation of water usage according to trend charts and reports, reduce expenses in water, and improve the efficiency of management.
Chunghwa Telecom understands the importance of resources reduction, recycling and reuse and has combined a five-year environmental sustainability development plan with the EARTH system. This is used to manage the use of resources and control energy efficiency, as well as to conduct systematic management of recyclables and waste treatment. We contracted a professional waste treatment company to transport our daily waste to landfills or incinerators for disposal. Recyclable waste is handled by a contracted cleaning company that is responsible for classification, treatment and proper disposal.
Power Usage Effectiveness
Chunghwa Telecom places great emphasis on the energy efficiency of our data centers, and is currently implementing energy conservation measures for telecom data centers (including IDCs). The efficient application of our proprietary iEN smart energy management system is our scientific approach to reducing energy, carbon emission and protection of the environment.
Share of Renewable Energy in Data Centers
The percentage of the renewable energy used in IDCs, in line with the renewable energy development plan of the government of Taiwan, is planned to hit the target of renewable energy accounting for 20% of energy consumed by IDCs.