Yokohama Rubber CSR Web Site 2015HOME

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  • Item

    Emissions of greenhouse gases

  • FY 2014 results

    334 thousand tons
    351 thousand tons
    30,844 thousand tons

Responsible departments

Each business location
* Activities are conducted by each location, and the direction of policies and activity measures are decided on by bodies including the Global Warming Countermeasures Committee and the Chemical Substance Management Committee.

Stance and target

Why is "Emissions" a critical issue to be addressed?
Explanation of the reason and background

We use resources to manufacture and sell various rubber products such as tires, hoses, and belts. In addition, we handle chemicals adhesives and sealants. In particular, we recognize the reduction of emission in the manufacturing process and the use of products as an important initiative that will lead to the prevention of global warming and environmental pollution, as well as sustainable operations at each business location.

Policies and stance relating to air pollution

The Yokohama Rubber Group will work to minimize the burden on the environment caused by the provision of products and services in accordance with the Environmental GD100, Yokohama Rubber Environmental Policy, and Yokohama Rubber Group Action Guidelines.
To this end, we will develop and introduce environmental technologies while working together with various people involved in the provision of products and services to reduce air pollution throughout the entire value chain. We comply with international agreement on emission, the regulations of each country (in Japan, the Energy Saving Act, Act on Promotion of Global Warming Countermeasures, etc.), and the regulatory response policy of related organizations such as the Japan Rubber Manufactures Association while setting stricter self-imposed standards in order to control air pollution.

Risks and opportunities at the Yokohama Rubber Group related to greenhouse gas emissions


Risks include an increase in facility investment costs to reduce emissions, an increase in energy costs related to the use of renewable energy, and global warming leading to a deterioration in the working environment and an increase in investment costs for countermeasures.


We contribute to society by improving the energy efficiency of operations through the reduction of emission, environmental conservation in the areas we operate in, and the external provision of heat insulation materials, etc. Because controlling emissions of volatile organic compounds (VOC) and air pollutants in addition to greenhouse gas emissions makes it possible to reduce the cost of environment-related investment, this leads to a reduction in product manufacturing costs.

Use of offsets

Offsets are not used.

Vision (attainment goal) / target

As international regulations related to emission become increasingly stringent, as a general rule we achieve the control standards of the so-called "advanced countries."
The Yokohama Group is working to reduce total greenhouse gas (GHG) emissions as an energy use reduction target.

  • Long-term target:
    By 2050 reduce total CO2 emissions throughout the entire value chain of the Group by at least 50% of that in the base year (2005).
  • Mid-term target:
    By 2030 reduce total CO2 emissions per unit of net sales throughout the entire value chain of the Group by at least 40% of that in the base year (2005).

Measures for vision achievement

The Group conducts the following measures to monitor and reduce the environmental footprint that is produced through our production activities, R&D, and offices.

  1. The Group sets independent management standards that are stricter than those required in accordance with laws and regulations, and based upon which we conduct constant monitoring.
  2. Measurement results with legal requirements are regularly reported to administration and local residents.
  3. We will strengthen activities aimed at reducing our environmental burden, such as improvements to our production process.
    Conversion of energy used, introduce renewable energy, control of waste heat through heat retentions and insulation, and the introduction of the latest environmental technologies and systems
  4. Prevention of environmental pollution
    Identification of and improvements in environmental pollution, conducting regular monitoring and measurements

Review of FY 2014 activities

There were no events that led air pollution.
We carefully manage the concentration of our NOx and SOx emissions to fully comply with parameters set by the law. There were no cases where we exceeded our voluntary set parameter value.
We do not use or emit any ozone-depleting substances. There were no cases of dioxin use.
While GHG emissions decreased by 1.6% in Japan, because emissions increased by 11% due to expanded production, emissions grew overall. VOCs emissions were down by 5% overall.

Greenhouse gas emissions at domestic group companies and overseas production bases

Calculation of Scope 3

Scope 1 to 3 for FY 2014 are as follows. A breakdown of Scope 3 is also displayed.
As a result of the corporate activities of Yokohama Rubber during FY 2014 greenhouse gas emissions (Scope 1 + 2) were 685 thousand tons (CO2), and greenhouse gas emissions for the entire value chain including indirect emissions (Scope 1 + 2 +3) were 30,844 thousand tons (CO2).
Scope 3 accounted for 98% of this, while use of products was 83%. We will work towards the spread of environmentally friendly products and fuel efficient tires while working together with suppliers to reduce GHG emissions throughout the value chain.

  • Cat Scope 3 category Emissions (thousand t-CO2
    1 Purchased products and services 2,342
    2 Capital goods 475
    3 Fuel and energy 103
    4 Transportation and distribution (upstream) 148
    5 Waste 2
    6 Business travel 3
    7 Commuting employees 18
    8 Upstream lease assets  
    9 Downstream transportation and distribution 58
    10 Processing of sold products 5
    11 Use of products 26,155
    12 Disposal of products 1,467
    13 Downstream lease assets 0
    14 Franchise  
    15 Investment 67

*1 Scope 1: Direct emissions of greenhouse gases by the company (examples: fossil fuel, natural gas, etc.)

*2 Scope 2: Indirect emissions of greenhouse gases by the company (energy use, etc.)

*3 Scope 3: Greenhouse gases emitted indirectly by the Company through the supply chain (examples: manufacturing, transportation, business travel, commuting, etc.)

*4 The calculation was conducted in accordance with the criteria of Scope 3 issued by the GHG Protocol.

Verification of greenhouse gas (GHG) emissions

The verification of a third party was received in order to verify the reliability of GHG emission calculation information.

Case introduction

Fuel conversion to natural gas

At the Vietnam Plant, we reduced CO2 emissions by converting from fuel oil to natural gas with a low CO2 emission factor.

Natural gas tanks at the Vietnam Plant

Energy saving improvements through heat insulation materials

We manufacture and install heat insulation materials fitting the size of equipment and piping.
Since FY 2007 we have installed heat insulation materials to cover steam pipework and conducted activities to prevent heat release at business locations in Japan and overseas. We continued to install heat insulation materials to cover steam pipework and make heat insulation and thermal insulation improvements during FY 2014.

Pipe insulation

Pipe insulation

Energy-Saving Technology Committee

We have held the Energy-Saving Technology Committee. The committee produces results through energy management corresponding to the Act on the Rational Use of Energy, the introduction of energy-saving equipment, and energy-saving improvement activities.

Energy-Saving Technology Committee

Issues and future improvement measures

Issues include thorough management of data on global air emission volumes at overseas sales bases, etc. and working to reduce emission in cooperation with the supply chain.