Reducing CO2 emissions
Status of Scope 1 and Scope 2
Since fiscal 2013, the Toyo Tires Group has been working toward the target of reducing Scope 1 and Scope 2* CO2 emissions per unit of production at its production sites in Japan by 15% from fiscal 2005 levels by the end of fiscal 2020.
In fiscal 2015, CO2 emissions decreased by 1.3% from the previous year, but increased by 6.7% compared to fiscal 2005. Despite various measures taken, including converting the fuel for the existing boilers from heavy oil to town gas, this increase was due mainly to a decrease in production volume in Japan compared to fiscal 2005 and to a limit in the amount of energy input that could be controlled by the existing equipment depending on the production volume.
From fiscal 2016 we will implement new fuel conversion measures to achieve our target by fiscal 2020.
- * Scope 1: Direct emissions from business operations (e.g. fuel use in plants)
Scope 2: Indirect emissions from energy consumption (e.g. use of purchased electricity)
CO2 emissions per unit of production (Scope 1 and 2) (in Japan)
- * CO2 emissions calculated by the thermal power unit of production method in accordance with the “Greenhouse Gas Emissions Calculation and Reporting Manual of the Ministries of the Environment and of Economy, Trade and Industry for Rubber Business Operators,” published by the Japan Rubber Manufacturers Association.
- * As the electricity emission factor, the actual receiving-end emission factor for fiscal 2005 was used; as the denominator, the combined value of new rubber consumption and the amount of materials converted to new rubber at our production bases was used.
- * Data collection period for each fiscal year was from April 1 to March 31 for fiscal 2011 and before, and from January 1 to December 31 for fiscal 2012 and thereafter.
Changes in CO2 emissions per unit of production (Scope 1 and 2) (in/outside Japan)
- * Data collection period for each fiscal year was from January 1 to December 31.
Responding to Scope 3 emission control requirements
Since fiscal 2013, We have been calculating Scope 3 CO2 emissions* from our tire business towards the goal of reducing CO2 emissions throughout the entire value chain, from the procurement of raw materials to the disposal of products. In fiscal 2015, Scope1 and 2 CO2 emissions accounted for 3.5% of our total emissions, and Scope 3, 96.5%. The area with the most CO2 emissions was Category 11 of Scope 3 (use of products), accounting for 86% of all scopes.
We will focus in particular on the reduction of CO2 emissions from product use, through further popularization and performance upgrading of fuel-efficient tires while working on the improvement of data collection and management accuracy.
- * Scope 3: Indirect emissions from other activities (e.g. transportation and use of products, employee commuting, and business trips)
Life cycle assessment of tires
LCA (lifecycle assessment) is a method of quantitatively calculating, analyzing and evaluating impacts on the environment throughout a commercial product or service’s entire lifecycle, from procurement of raw materials to discarding and recycling.
To calculate CO2 emissions in the lifecycle of tires, the Environment Subcommittee, Technical Committee, of the Japan Automobile Tyre Manufacturers Association, Inc. in April 2012 published “Tyre LCCO2 Calculation Guidelines Ver. 2.0″. These Guidelines have been developed based on the Tyre LCA Calculation Method, which has a track record for use in the Japanese tire and rubber industry, and by referring to standards and systems related to LCA in Japan and abroad (ISO 14044, the Japanese Carbon Footprint system, PAS2050, BPX30-323, and GHG protocol).
Tire CO2 emissions calculated in accordance with these Guidelines are as follows.
Greenhouse gas (GHG) emissions (converted to CO2) over the lifecycle of one tire
[PCR (Tires for passenger vehicles)]* Calculation was performed using the volume retail tire size (195/65R15) as a model.
General tires (per tire): 300.6 kgCO2e
Fuel efficient tires (per tire): 243.9 kgCO2e
[TBR (Tires for trucks and buses)]* Calculation was performed using the volume retail tire size (275/80R22.5) as a model.
General tires (per tire): 2,330.3 kgCO2e
Fuel efficient tires (per tire): 1,888.1 kgCO2e
- * Regarding GHG emissions at the end of life & recycling stage
• For PCR, calculation was performed taking into account the emission reduction effects of thermal use (thermal recycling).
• For TBR, as a result of calculation taking into account the emission reduction effects of thermal use (thermal recycling), product reuse (retreading), and material reuse (material recycling), net GHG emissions became negative.
- * Source: The Japan Automobile Tyre Manufacturers Association, Inc.
Promoting energy-saving activities
monitoring information on electric energy by a solar power generation system (Tire Technical Center; Itami City, Hyogo Prefecture)
We are pursuing Group-wide concerted energy-saving efforts to achieve the target of reducing energy consumption per unit of production by an average of at least 1% per year, from the medium- and long-term perspective. In fiscal 2015, as in previous years, we implemented various energy-saving measures, including conversion to LED lights, replacement with high-efficiency equipment, and reduction of energy losses from steam and air leaks at manufacturing sites, as well as the use of renewable energy generated through solar power generating systems at business sites. Not only production plants, but also business offices vigorously worked on power-saving initiatives, such as a cool summer campaign (in conjunction with the Cool Biz campaign) and Warm Biz campaign. As a result, the entire Group succeeded in reducing energy consumption per-unit of production by 0.47% from the previous year.
In fiscal 2016 and onward, we will further promote Group-wide energy-saving activities, involving all members, by further strengthening cooperation between business sites.
Major energy-saving and power-saving activities at production sites
- Introducing a demand monitor to visualize power consumption
- Replacing mercury and fluorescent lights with LED lights
- Replacing high-efficiency transformers
- Reducing energy losses from steam, air and nitrogen gas leaks
- Reviewing and replacing heat-insulating materials for heating equipment
- Improving the motor control of the hydraulic vulcanizing units
- Improving energy efficiency by installing new boilers
Major energy-saving and power-saving activities at R&D and administrative sites
- Introducing solar power generation systems
- Setting upper and lower temperature limits for air conditioning; turning off air conditioners where unnecessary
- Removing lights where unnecessary, turning off lights (including during lunch breaks)
- Frequently turning off office equipment and lowering the brightness of PC monitors
- Implementing Cool Biz and Warm Biz activities
- Introducing circulators
- Encouraging the use of stairs instead of elevators
- Thorough implementation of No Overtime Day
Energy-saving efforts in logistics
We have been promoting energy-saving activities in logistics with the goal of reducing transportation energy consumption per unit of weight transported by an average of at least 1% per year, from the medium- and long-term perspective.
In fiscal 2015, as a result of implementing various energy-saving measures, including a modal shift from truck to rail and ship, the entire Group’s transportation energy consumption per unit of weight transported dropped by 10.1% from the previous year. This means we have been in a state of continuous reduction since fiscal 2013.
CO2 emissions from transportation also decreased by 17.6% from the previous year. In fiscal 2016 and onward, we will continue our efforts to improve our logistics and making them even more environment-friendly.
Major energy-saving activities in logistics
- Promoting a modal shift from truck to ship and rail container transportation
- Gradual expansion of the use of 45 HC containers*
- For the transportation of shipments from overseas, reducing the overland travel distance within Japan by sending goods to ports nearest their respective destinations
- Reducing the transportation distance by delivering products directly to customers instead of passing through a warehouse
- Joint transportation through the use of trucks on return journeys from customers
- Improving the loading efficiency of long-distance truck transportation by using relay points
- Promotion of energy saving through the use of fuel-efficient tires
- * 12.5% improvement in load efficiency compared to conventional 40 HC containers