Reduction in Energy Usage

Basic Approach

With the aim of "achieving a 30% reduction in emissions of greenhouse gases from the FY2014 level by the end of FY2031", we have worked on various measures for energy conservation at all plants and business sites in Japan.

Promotion of Energy Conservation

Energy Conservation Target and Progress

Energy conservation target: Reducing the basic unit of energy consumption by more than 2%, compared with the previous year.

• Changes in the basic unit of energy consumption

Changes in energy consumption per unit

In FY2020, the basic unit of energy consumption was improved by the efficient operation of production equipment according to increased production of new products as well as the energy-saving measures, such as updating production and air-conditioning equipment, and the installation of LED lighting.

Energy Conservation Efforts

Energy Conservation Efforts

At each plant and business site in Japan, we have improved the efficiency of air-conditioning equipment by taking measures, such as switching to high-efficiency air conditioners and cleaning the fins of its outdoor units. In addition, we implemented various measures for saving electricity consumption, such as efficient operation of production facilities by reviewing their operating conditions and the reduction of their operation time by improving production yield. As for lighting equipment, we introduced approximately 11,500 LED lights by March 2020.
LED lightning will be gradually introduced in the future.

Efforts to Reduce Peak Electricity

Since 2011, at each plant and business site in Japan, we have worked to reduce peak electricity during the summer. In FY2020, we conducted various measures for saving electricity consumption, such as reducing unnecessary lighting and changing the number of air-conditioning equipment in operation.

Main measures for electricity consumption in Japan

  • Implement "Cool Biz" and "Warm Biz" *
    *"Cool Biz" and "Warm Biz" are Japanese campaigns initiated by the Japanese Ministry of the Environment as a mean to help reduce electricity consumption in the office by limiting the use of air conditioning. By changing the standard office air conditioner temperature to 28℃ in summer and to 20℃ in winter and by introducing a liberal summer or winter dress code, staff can work in the warmer or cooler temperature.
  • Temporary shutdown of air conditioning and total heat exchangers
  • Installation of heat shielding film and blinds on skylights and veranda glass
  • Reduction of unnecessary lighting and review of the amount of office equipment in operation
  • Reduction of electricity consumption for air conditioning by using electric fans
  • Sharing of cooler spaces by changing the floor layout
  • Implementation of operating equipment by using demand monitoring system*
    *Demand monitoring system : System measuring maximum demand electrical power continuously 24 hours a day and alerting when it nearly exceeds the set target value

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