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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, FY2017 figures marked with have received independent assurance from KPMG AZSA Sustainability Co., Ltd. in accordance with the International Standard on Assurance Engagements (ISAE) 3000 and ISAE 3410.
At the Hitachi High-Tech Group, we created a highly precise impact calculation tool in FY2017 to increase our accuracy in ascertaining the effects of improvement brought about by environmental capital investment. The tool has been deployed and is in operation within the Group. In FY2017 we reduced our emissions with respect to the target, achieving a reduction impact of 1,260 t-CO2.
The implementation of the Environmental Investment Guidelines, which were formulated in FY2016 with the aim of increasing the ease and efficiency of environmental investment, has resulted in a 24% year-on-year increase in the amount of environmental capital investment we made in FY2017.
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 FY2017, we achieved a reduction in electricity usage 2.9% in excess of our target.
|Renewable energy||Installation of solar panels on building rooftops|
|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 conditioner
Installation of hybrid fans
Installation of underfloor air conditioning systems
|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 FY 2017, a total reduction of 45.3% was achieved in energy consumption per unit (base : FY 2005) against the target of a total reduction of 43.5%. (In the target control, 0.429 t CO2/MWh was used as a CO2 conversion factor.)
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.
In FY2017 as in the previous year, we received a score of "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.