Preventing Global Warming

Reducing Energy Usage and CO2 Emissions

Due to revisions to the Energy Saving Act, in October 2010, 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.
For fiscal 2013, we achieved our target reduction of 1% per year; achieving respective reductions of approximately 26.7% for office-type locations, 4.1% for data center locations and 4.8% for CTC overall.
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 2013, 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 FY2011 FY2012 FY2013 FY2014 FY2015
Energy consumption Kl 5,753 6,603 5,212 3,567 3,383
Greenhouse gas emissions t-CO2 8,629 12,382 10,624 7,138 6,706
Energy consumption per unit*1   58.50 66.74 47.64 34.90 24.25

Data Centers

Category Units FY2011 FY2012 FY2013 FY2014 FY2015
Energy consumption Kl 32,902 32,007 31,136 29,362 29,980
Greenhouse gas emissions t-CO2 51,857 58,781 64,315 61,530 60,880
Energy consumption per unit*2   1.968 1.871 1.881 1.803 1.772

Major Overseas Offices

Category Units FY2011 FY2012 FY2013 FY2014 FY2015
Greenhouse gas*3 t-CO2 - - - - 695.4
  • *1 Base unitfloor area / number of personnel
  • *2 Base unitenergy consumption for entire data center / amount of energy used by IT devices
  • *3 CO2 emission volume when electricity used in major overseas offices are calculated based on the 2012 figures on the list of grid emi ssion factor by country which is officially announced by IGES (Institute for Global Envir onmental Strategies).
return to top
Back to Top