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Corporate InformationSustainability

Promoting Global Warming Countermeasures

We are promoting ways to use energy more efficiently and reduce GHG emissions during production and transportation, in both the manufacturing and nonmanufacturing divisions, to contribute to the prevention of global warming.

Actions and Achievements

We are working to reduce energy use per unit—an indicator of energy efficiency—by systematically improving efficiency, such as by installing high-efficiency equipment and devices, from LED lighting to inverter air conditioners, at each facility. In fiscal 2016, we achieved an improvement of 12% (from a base year of fiscal 2005), against a target of 15%. Part of the reason for not hitting the target was because of a decline in sales in energy intensive business divisions, which contracted the denominator in calculating energy use per unit.

The increase in the total volume of CO2 emissions was due to the fact that a materials company in the Americas newly became a member of the consolidated Hitachi Group in fiscal 2016. There was a general decline in regions other than the Americas.

We will continue to harness our expertise in control and IT technologies to actively pursue energy conservation measures at our factories and offices and promote the efficient use of energy.

Key Indicators

Reduction in Energy Use per Unit


Energy volume used both in and outside the organization (SCOPE 1 and 2).
A value closely related to the emission factor numerators (environmental burden) of energy use from business activities (for example, production quantity, output, building floor space, and number of employees).

CO2 Emissions

Graph of CO2 Emissions (Click the link below for this data in table format.)

Includes 958 kt-CO2/year emitted by a materials company that became a consolidated member of the Hitachi Group in fiscal 2016.
  • The CO2 electrical power conversion factor uses the 2005 emission coefficients for individual countries published by the International Energy Agency (IEA) in the 2010 edition of CO2 Emissions from Fuel Combustion.
  • Energy-related CO2 emissions were 1,296 kt-CO2 (SCOPE 1) and 2,549 kt-CO2 (SCOPE 2).

Introducing Renewable Energy

Green Power logo for the Green Power Certification scheme.

We are promoting the use of solar, wind, and other forms of renewable energy. During the 2016 fiscal year, Hitachi produced 2,925 MWh of renewable energy for its own use. Hitachi Computer Products (America) proactively uses renewable energy to power its factory, purchasing 8,769 MWh during fiscal 2016. In Japan, we contracted for 1,000 MWh/year of Green Power through Japan Natural Energy Co., Ltd. to provide power for offices, showrooms, and exhibitions.

Reducing Transportation Energy Consumption

Hitachi is working toward the reduction of energy output during transportation as well as at business sites, and we have established targets for the reduction of energy use per unit for each business unit and Group company. Business sites are promoting a modal shift to highly efficient transportation methods, improving truck loading ratios and taking other measures to reduce transportation energy consumption, and switching to the use of eco-cars. CO2 emissions from transportation inside Japan for the Hitachi Group in fiscal 2016 were 106 kt-CO2. In addition, the Healthcare Business Unit has promoted a modal shift in manufacturing precision medical equipment, enabling our CT systems and X-ray diagnostic tools to earn the Ministry of Land, Infrastructure, Transport, and Tourism's Eco Rail Mark.*1

A mark conferred on products and businesses when a designated share of freight shipments are made by rail transport, which has low CO2 emissions.

Next Steps for Factories and Offices

In the Environmental Action Plan for 2018, we are pushing ahead to incorporate efficient energy use during the production stage. We will continue to run the PDCA cycle to achieve improvements.

In the future, to realize the low-carbon society called for in the Hitachi Environmental Innovation 2050 long-term environmental targets, we will strive to reduce energy-derived CO2 and other GHG emissions by making full use of high efficiency products and low-carbon energies. Our energy usage efficiency has improved by 7% since fiscal 2010. To achieve our long-term targets, we will continue to improve the efficiency of energy usage and reduce GHG emissions during the production stage.

Reducing Transportation Energy Consumption

A Modal Shift in the Transport of Precision Medical Equipment (Healthcare Business Unit, Hitachi, Ltd.)

Loading a CT system onto a railway container.

The Healthcare Business Unit is implementing a modal shift by using railways to transport CT systems and X-ray diagnostic systems of a size that fit in 12-foot railway containers. These systems are one of the types of diagnostic imaging equipment made at the Medical System Operations Group, Kashiwa.

Because these are precision machines used in providing healthcare services, the quality of the transport was doubly verified in advance. Great care is also needed in the handling of these products, which are very heavy and have mass eccentricity, and efficient transport has been achieved while ensuring transport quality by sharing handling know-how and modifying the pallets used with these products for container use. These efforts have resulted in the acquisition of Eco Rail Mark product certification for these CT systems and X-ray diagnostic systems, and CO2 emissions were reduced 18.6 t-CO2 in fiscal 2016 (5.2% down from the previous year) with this modal shift.

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