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In an effort to reduce emissions of CO2, which is one of the principal greenhouse gases, the manufacturing sites of Hitachi High-Tech Group companies are undertaking the following activities to reduce energy consumption such as electricity and fuel oil as part of their measures for prevention of global warming.
In order to enhance the credibility of this report, FY2016 figures marked with have received third-party assurance from KPMG AZSA Sustainability Co., Ltd. in accordance with the International Standard on Assurance Engagements (ISAE) 3000, ISAE 3410, and the Practical Guidelines for Assurance of Sustainability Information from the Japanese Association of Assurance Organizations for Sustainability Information.
We manage the introduction and operation of new facilities on a quarterly basis to increase the precision of improvement effects brought by environmental investment. Our emissions in FY2016 was 611 t-CO2 lower than the target for the fiscal year.
In FY2016, we established the Working Group for Considering Environmental Strategic Investment, consisting of representatives from each site. The group is working to identify the latent environmental effects of facilities that have been invested in, consider methods of calculating these effects, and increase the precision with which we judge environmental improvements when we set the targets. In addition, the group has also formulated Environmental Investment Guidelines in order to increase the ease and efficiency of environmental investment, resulting in an increased number of investments related to the reduction of CO2 emissions.
Since power generation accounts for the majority of CO2 emissions, we have worked particularly hard to reduce electricity consumption.
At the Hitachi High-Tech Group, we have worked to introduce LED floor lighting in offices and communal areas, etc.
Furthermore, we periodically update our high-efficiency substations and air conditioning units, etc. at manufacturing sites. In FY2016, we achieved a reduction in electricity usage 1.7% in excess of our target.
|Renewable energy||Installation of solar panels on the Design Building in the Naka area|
|Air-Conditioning System|| Improvement in air-conditioner operation mode for clean rooms
(Adjustment of the control accuracy for holidays and nighttime, discrete control of cleanliness for each compartment)
Installation of controllers of the energy-saving type in air conditioners
Installation of hybrid fans
Air conditioning of spaces under floors
|Air-Conditioning and Power utilization efficiency|| Less power loss through installation of phase advance capacitors
Installation of super-amorphous transformers
Installation of automatic power factor regulators
Reduction in current-on durations of products
|Various equipment and facilities|| Installation of air conditioner compressors controlled by the number of air conditioner units in operation
Installation of inverter-controlled cooling water supply equipment
|Lighting|| Installation of a system for automatic selection of illuminance
Installation of lights for automatic detecting the presence of persons
Installation of LED lights
Installation of inverter ballasts with luminaires
Fewer lights are lit and unnecessary lights are turned off when not needed.
|Enlightenment activity|| Handbills are distributed and signboards are installed in energy-saving months.
Cool Biz and Warm Biz
“Green” walls on building windows and walls
In fiscal 2016, a total reduction of 42.9% was achieved in energy consumption per unit (base year: fiscal 2005) against the target of a total reduction of 36.6%.
Hitachi High-Tech Group will continuously take initiatives to reduce CO2 emissions by installing equipment and facilities of an energy-saving type, by efficiently using energy and by generating renewable energy.
At Hitachi High Technologies, we have been responding to the CDP Climate Change Questionnaire since 2015.
In 2016, the method of scoring was revised, and the questionnaire now evaluates the progress level of companies seeking to take leadership. Our score in 2016 was “C”, which indicates an awareness of the environmental burdens and risks associated with our business and of their effects.
The Hitachi High-Tech Group will continue to engage in environmental conservation activities as a group, based on the Hitachi High Technologies Environmental Action Principles, while conducting appropriate disclosure of information, and working towards improvements in corporate value.