Preventing Global Warming

Reducing Energy Usage and CO2 Emissions

Due to revisions to the Energy Saving Act, in , CTC was designated as a designated business operator, and is consequently working to reduce energy consumption per unit by an average of 1% or more per year.
We are supporting wind power projects in the city of Yokohama, where we are offering our assistance in the design of wind turbines, through services such as wind condition simulations, on-site surveys and basic turbine design. We are also contributing to the prevention of global warming by utilizing our Green Energy Certificate issued by Japan Natural Energy (JNE).
At our Yokohama Computer Center (North Building), which opened in , we have adopted various environmentally-friendly measures (such as solar power generation systems, greening of wall surfaces and rooftops, cooling by means of outside air in winter, and the use of heat-blocking curtains between isles of server racks) and are endeavoring to use energy more efficiently.


Category Units FY2016 FY2017 FY2018 FY2019 FY2020
Energy consumption Kl 3,293 3,701 3,732 3,547 3,251
Greenhouse gas emissions t-CO2 6,437 7,044 6,889 6,352 5,662
Energy consumption per unit*1 0.407 0.44 0.43 0.407 0.36

Data Centers

Category Units FY2016 FY2017 FY2018 FY2019 FY2020
Energy consumption Kl 29,625 27,921 27,792 26,094 24,267
Greenhouse gas emissions t-CO2 59,210 54,705 51,185 46,327 41,972
Energy consumption per unit*2 1.702 1.695 1.691 1.669 1.636

Major Overseas Offices (Overseas Group Companies)

Category Units FY2016 FY2017 FY2018 FY2019 FY2020
Greenhouse gas*3 t-CO2 722.8 397.9 396.1 633.3 918.9
  • *1Energy usage/number of personnel
  • *2Base unit energy consumption for entire data center / amount of energy used by IT devices
  • *3 Calculated using the national Grid EF in the “List of Grid Emission Factors” officially announced by IGES.

Supply Chain Greenhouse gas emissions (Scope3)

The CTC Group reports its fiscal 2020 results for Scope3, greenhouse gas emissions throughout the corporate supply chains covering all processes from material procurement to disposal, as follows.
The CTC Group will continue to undertake activities for reducing carbon dioxide (CO2) emissions, in addition to tracking total greenhouse gas emissions by its supply chains.

Scope3 Calculation result (Fiscal Year 2020)

Scope3 Calculation result (Fiscal Year 2020)
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