Reduction in energy consumption is vitally important for cutting the greenhouse gases which cause global warming. The Group reduces energy during product use by providing customers with products that offer greater energy saving performance, as well as providing services that help reduce customer CO2 emissions. At the same time, we are working to reduce the energy consumed in our production processes and to reduce CO2 emssions from services and solutions.
Improving the environmental performance of products, services and solutions
The Group aims to contribute to solving environmental issues by developing and spreading environment-conscious products, as well as solutions and services. One of our actions to that end is to raise the environmental performance of products and promote the widespread application of IoT solutions, such as by enhancing their energy-saving performance.
The assessment subjects are air conditioning IoT solutions as well as refrigerators, washing machines, and LED lighting, which provide high levels of contribution to the suppression of CO2 emissions (power consumption) during use.
In developing products, we work to achieve functional improvement and environmental burden reduction in tandem, using the functions of equivalent models such as the volume of refrigerators and the wash load of washing machines, etc. as indicators. We are also working to cut CO2 emissions by expanding sales of products with high energy-saving performance and promoting the widespread application of air conditioning IoT solutions.
The target set for fiscal 2021 was 78.8% compared to the level in fiscal 2010, and we actually surpassed the target at 76.1%.
CO2 Emissions from Products, Services and Solutions with Significant Reduction in CO2 Emissions
(Refrigerators, Washing Machines, LED Lighting and “exiida” Remote Monitoring and Predictive Diagnostics)
(Compared to Fiscal 2010)
*1 Sum of the amount of CO2 emissions before adopting solutions and services and the amount of CO2 emissions based on the assumption that a required number of units which corresponds to that of products from the assessment fiscal year were used for the whole lifetime
*2 Of main product functions, those relevant to CO2 emissions
Reduction of CO2 due to using renewable energy
Initiatives for Achieving Carbon Neutrality
We are working on utilizing renewable energy in the aim of achieving carbon neutrality at our factories by fiscal 2030. As one part of this, we are promoting the installation of solar power systems. In addition to installations at some of our sales offices, we are expanding installations to our manufacturing facilities. We are aiming for a power generating capacity of about 3,000 Kw at two manufacturing sites (Tochigi and Taga Works) for fiscal 2030.
Solar Panel Installation on Roof of R&D Bldg. at Tochigi Plant *3
Building that contains Hitachi Global Life Solutions HQ (exterior)
All the electricity for the lighting and AC of our Hitachi Global Life Solutions headquarters has been switched to power from renewable energy sources.*4
This is expected to reduce CO2 emissions by about 660 tons*5/year.
*3 Started operating July 2022
*4 Started operating October 2022
*5 Calculated from annual electric consumption of 2021
Reducing CO2 emissions in the production process
Energy consumption in corporate activities is one emission source of carbon dioxide (CO2) and other greenhouse gases that cause global warming. The Group also uses energy when producing products. It therefore promotes the efficient use of energy consumed in its production activities by means such as the introduction of high-efficiency devices, and the amelioration of the production process. We have been working since 2019 on meeting action plan targets, such as the level of CO2 emissions/unit of production*1; the target set for fiscal 2021 was 85.4% of the level in fiscal 2010, and we actually surpassed the target at 70.5%.
[Subject: Hitachi Global Life Solutions Manufacturing Sites]
Improvement of CO2 Emissions/Unit of Production
(compared to fiscal 2010)
*1 Quotient of CO2 emissions divided by the amount of activities
*2 Value with close correlation to CO2 emissions (such as production and quantity produced)
Using the Hitachi Internal Carbon Pricing System
Reducing CO2 Emissions by Installing High Efficiency Equipment Utilizing the Hitachi Internal Carbon Pricing (HICP) System
We have been introducing our Hitachi Internal Carbon Pricing (HICP) system since fiscal 2019 to promote CO2 reductions from our factories and offices.
The HICP system aims to expand capital investments for CO2 reduction even further by providing incentives, such as setting internal carbon pricing referenced to global emissions trading and carbon taxes, converting the effect of CO2 reductions due to decarbonization investments into monetary values, and evaluating the efficacy of investments by adding it to the effect of energy reductions.
The Taga factory made use of this HICP system to install an automatic control system for air compressors, which power a variety of equipment in its manufacturing processes. The system has eliminated wasteful operation and led to a major reduction in electrical consumption. Translating this into reduced CO2 emissions means a drop of about 9% *3.
High Efficiency, Auto Controlled Air Compressor System Installed at Taga Factory
*3 As of October 2021 (compared to fiscal 2020)