Recognition of Issues and Basic Approach
Among the environmental issues the chemical industry faces, the Mitsubishi Chemical Holdings Group positions global warming and climate change as the highest priority it must address. Therefore, the Group has been making a concerted effort to reduce greenhouse gas (GHG) emissions for many years. Besides reducing GHG emissions arising from its business activities as a matter of course, the Group is also working to develop products that generate lower GHG emissions when used.
Reducing GHG Emissions Arising From Manufacturing
The Mitsubishi Chemical Holdings Group is striving to reduce GHG emissions arising from manufacturing by proactively improving energy intensity, which is energy consumption per unit of production.
Reducing GHG Emissions Arising From Logistics
The Mitsubishi Chemical Holdings Group aims to realize environment-friendly logistics by promoting the improvement of loading ratios and a modal shift to railway freight transport. In addition, the Group is working with logistics companies to reduce GHG emissions by upgrading equipment. For example, this initiative is introducing dedicated ships installed with friend fins or contra-rotating propellers.
Reducing GHG Emissions From Sales Activities
The Mitsubishi Chemical Holdings Group is striving to reduce GHG emissions from sales activities by proactively introducing hybrid vehicles into the Group's vehicle fleet, among other measures.
Providing Products that Generate Lower GHG Emissions When Used
Through activities initiated from the research and development stage, the Group is working to launch products that generate lower GHG emissions when used, along with verifying the benefits derived from using these products in terms of reducing the GHG emissions of society as a whole.
Identifying GHG Emissions in the Supply Chain
Mitsubishi Chemical Holdings Group identifies and discloses GHG emissions resulting from the delivery to plants of raw materials purchased, customers' use of products, and the disposal of products. These are known as Scope 3 emissions. The Mitsubishi Chemical Holdings Group began identifying its Scope 3 emissions in Japan and receiving third-party assurance in fiscal 2012. Going forward, the Company intends to extend the reach of this initiative to include overseas companies.
Implementation of Carbon Footprint Assessment
The Mitsubishi Chemical Holdings Group is implementing a carbon footprint assessment that calculates and discloses GHG emissions for individual products, from raw material purchasing through to delivery to customers.
Targets and Results
GHG* Emissions (Domestic Mitsubishi Chemical Holdings Group)
*Calculation Standards for Greenhouse Gas Emissions
For GHG emissions covered by the Act on the Rational Use of Energy and Act on Promotion of Global Warming Countermeasures, the Group's calculations are in accordance with the methods stipulated by these laws. For GHG emissions not covered by either law, the Group develops calculation methods for each individual GHG emission based on considerations such as the balance of chemical reactions.
Energy* Consumption (Domestic Mitsubishi Chemical Holdings Group)
*Calculation Standards for Energy Consumption
Electricity consumption volumes are converted to joules using the coefficients stipulated by the Act on the Rational Use of Energy (9.97 GJ/MWh for daytime use, 9.28 GJ/MWh for nighttime use, and 9.76 GJ/MWh for other use).
GHG Emissions Arising From the Mitsubishi Chemical Holdings Group's Business Activities
*Calculation Method for Scope 3 Emissions
Emissions are calculated in accordance with the Greenhouse Gas Protocol's Corporate Value Chain (Scope 3) Accounting and Reporting Standard and related assessment guidance as well as the World Business Council for Sustainable Development (WBCSD)'s Guidance for Accounting & Reporting Corporate GHG Emissions in the Chemical Sector Value Chain and various information provided by the Green Value Chain Platform advocated by the Japanese government. In particular, per-unit emissions are calculated mainly in accordance with the data disclosed by the Green Value Chain Platform, and the information supplied by the MiLCA life cycle assessment (LCA) support system of the Japan Environmental Management Association for Industry. Please follow this link to view calculation methods for each emissions category.
Examples of Activities
■ Mitsubishi Plastics, Inc.: Installation of co-generation facilities
In July 2013, the Nagahama Plant of Mitsubishi Plastics, Inc. began operating two co-generation facilities. These facilities generate power using environmentally friendly city gas as fuel. Using exhaust heat produced by this power generation contributes to reducing greenhouse gas (GHG) emissions. Moreover, we developed a system to utilize an independent electric power generator with a capacity of 2,000 kW so the plants can continue to stably supply products even when power supply is restricted in an emergency.
■ Mitsubishi Chemical Logistics Corporation*: Deploying cargo ships fitted with the latest energy-saving equipment
Mitsubishi Chemical Logistics Corporation proactively chooses environmentally friendly ships when hiring cargo ships. For example, Sankyo Maru No.2, deployed by the company in February 2013, is fitted with the latest energy-saving equipment, including an electronically controlled engine. This was followed in September that year by the deployment of Ryoken Maru, which features a variable pitch propeller. Both of these ships is fitted with the latest energy-saving equipment, leading to enhanced fuel economy and reduced GHG emissions.
* Mitsubishi Chemical Logistics Corporation is a group company of the Mitsubishi Chemical Corporation Group
■ Mitsubishi Tanabe Pharma Corporation: Reducing CO2 emissions through the conversion of the entire gasoline vehicle fleet to hybrid vehicles
Mitsubishi Tanabe Pharma Corporation is pushing ahead with plans to convert its entire fleet of 1,500 gasoline vehicles used by sales personnel to hybrid vehicles by 2015. Through this measure, the company reduced CO2 emissions by 222 tons a year in fiscal 2012 compared with fiscal 2011. Furthermore, the company is encouraging the employees driving those vehicles to observe the practice eco-friendly driving practice of avoiding sudden accelerations and decelerations mainly by instructing them to gently apply pressure to the accelerator and release it as early as possible.
■ Mitsubishi Rayon Co., Ltd.: Carbon fiber reinforced plastic is used in outer panels of automobiles
Carbon fiber reinforced plastic developed for mass production by Mitsubishi Rayon Co., Ltd. has been adopted for use in the trunk lid of luxury sports cars. By maintaining greater rigidity than aluminum while having nearly half of aluminum's weight, it contributes to higher fuel efficiency (reduces CO2 emissions) through lighter weight and driving stability when driving at high speeds. We will further reduce CO2 emissions by increasing orders for automobiles and industrial-related applications.