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Hitachi High-Tech Group is promoting systematic activities to reduce energy-induced CO2 emissions as a response to climate change. Specifically, we are making efforts to reduce CO2 emissions throughout the value chain through ongoing efforts such as use of renewable energy, promotion of environmental investment, improvement of manufacturing processes, and environmentally conscious design, aiming at the creation of a low-carbon society.
In order to enhance the credibility of this report, FY2018 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.
Approximately 70% of our energy consumption in business activities is accounted for by domestic manufacturing sites. Aiming at efficient reduction of CO2 emissions, we have begun activities prioritizing a switch to power supply using renewable energy at our domestic manufacturing sites and a renewable energy mix, and will encourage overseas sites to also begin such activities.
Two of our manufacturing sites in Japan (Hitachi High-Tech Kyushu and Hitachi High-Tech Solutions Mito Division) have switched to low-carbon power supply using renewable energy.
We are continuing to develop our domestic manufacturing sites, and we will work toward gradually making the switch to low-carbon electricity at other domestic sites and overseas sites.
Hitachi High-Tech Group established the Environmental Investment Guidelines in FY2016 to improve the ease and efficiency of environmental investment. Since the investments made in FY2017, these guidelines have contributed to the growth of environmental investment and improvement in the reduction effect in the amount of electricity consumed versus investment. In FY 2018, the amount of environmental investment declined 10% versus the previous fiscal year, but the reduction effect in electricity consumption versus investment was 4.4 times greater than that of the previous year. We are shifting to investments in initiatives with high cost-effectiveness. In addition, starting in FY 2019 we work to introduce Internal Carbon Pricing aimed at further encouraging environmental investment. We will apply it to the investments to be made after FY 2020.
We are also actively working to conserve energy in conjunction with our rationalization of manufacturing processes.
At the Hitachi High-Tech Group, we have worked to introduce LED floor lighting in offices and communal areas, etc.
In addition, we are replacing transformers and air-conditioning units with highly efficient equipment, and improving manufacturing processes, at our manufacturing sites.
|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 FY2018 our annual amount of CO2 emissions was 34,637 tons, against our target of 34,937 tons. However, regarding energy usage improvement rate per unit, we fell short of our annual target reduction of 49.1% (base year: 2005), achieving 45.6%. This was due to the effects of an increase in energy consumption caused by major changes to product composition planned for initial sales, deferred revenue, and other effects. (In the target control, 0.429 t CO2/MWh was used as a CO2 conversion factor.)
Based on these results, we will continue taking initiatives to reduce CO2 emissions and to save energy by installing equipment and facilities of an energy-saving type, by efficiently using energy, and by generating renewable energy.
At Hitachi High-Tech Group, we have been responding to the CDP Climate Change Questionnaire. In FY2018, 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 disclose information in line with the disclosure framework set up by the Task Force on Climate-Related Financial Disclosures*2 and work toward improvements in corporate value, while making effective efforts to address climate change risks, in particular.