The Environment



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Item FY 2019 results FY 2020 results
Emissions of greenhouse gases (連結)
Scope1 583 thousand tons
Scope2 469 thousand tons
Scope3 22,774 thousand tons
Scope1 535 thousand tons
Scope2 451 thousand tons
Scope3 20,798 thousand tons
Ozone-depleting substances Emissions of CFCs
(Domestic) 496.2 tons
Emissions of CFCs
(Domestic) 309.5 tons
HAPs (Hazardous Air Pollutants) (Domestic) 18.6 tons (Domestic) 17.3 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 that include 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 emissions 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 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 agreements 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 Manufacturers 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 incurred in order to reduce emissions, an increase in energy costs related to the use of renewable energy, and global warming leading to 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 emissions, 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 emissions become increasingly stringent, as a general rule we aim to achieve control standards equivalent to those of the developed economies.
The Yokohama Group is working to reduce total greenhouse gas (GHG) emissions as an energy use reduction target.
  • Long-term target:
    • Aiming to achieve carbon neutrality.
    • By 2050, we will have reduced total CO2 emissions throughout the entire value chain of the Group by at least 50% compared to the base year (fiscal 2005).
  • Mid-term target:
    By 2030, we will have reduced the Group’s Scope 1 and Scope 2 emissions, as well as product manufacturing related CO2 emissions per unit of production output (through collaboration with our supply chain partners) by at least 30% compared to the base year (2013).

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. Legally-required measurement results are regularly reported to government authorities 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, introduction of renewable energy, control of waste heat through heat retention and insulation, and the introduction of the latest environmental technologies and systems.
  4. Prevention of environmental pollution
    Identification and remedying of environmental pollution risks, conducting regular monitoring and measurements, etc.
  5. Chemical substance management
    We confirm the suitability of chemical substances to be used in our products at the time of adoption or changes in laws and regulations.
    We minimize environmentally hazardous substances in our business activities and products, and reduce emissions of VOCs and hazardous substances.

Review of FY 2020 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 specified by law.

Emissions of NOx, SOx, etc.

(Domestic) (Unit: tons)
Cat NOx SOx
FY 2019 160.2 3.6
FY 2020 115.1 2.3
We do not use or emit any ozone-depleting substances. There were no cases of dioxin use.
While GHG emissions in Scope1+2 decreased 10.1% from the previous year in Japan, overseas emissions decreased 5.4% and overall GHG emissions decreased 6.4%.
VOC emissions were decreased by 9.0% overall.

Greenhouse gas emissions at domestic group companies and overseas production bases (thousand t-CO2)

Scope 3 estimation

The results for Scope 1 to 3 emissions for fiscal 2020 are as follows. A breakdown of Scope 3 is also displayed.
Greenhouse gas emissions (Scope 1+2) resulting from the corporate activities of Yokohama Rubber during fiscal 2020 were 986 thousand t-CO2, and greenhouse gas emissions including indirect ones (Scope 3) for the entire value chain were 20,798 thousand t- CO2. This is due to the expansion of the scope of calculation.
Scope 3 accounted for 95.5% of this, and use of products accounted for 77.0% of Scope 3 emissions. 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.

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Cat Scope 3 category Emissions (thousand t-CO2)
1 Purchased products and services 2,317
2 Capital goods 52
3 Fuel and energy 135
4 Transportation and distribution (upstream) 167
5 Waste 16
6 Business travel 3
7 Commuting employees 20
8 Upstream lease assets NA
9 Downstream transportation and distribution 59
10 Processing of sold products 10
11 Use of products 16,776
12 Disposal of products 1,132
13 Downstream lease assets NA
14 Franchise NA
15 Investment 112
  • 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 (electric power 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

Verification by a third party was obtained in order to verify the reliability of GHG emission calculation information.

Introduction of Initiatives

Conversion to the use of natural gas as fuel

The use of natural gas through environmentally friendly gas supply line is continuously being implemented in factories in Japan. Efforts to switch to natural gas as a source of fuel in reducing CO2 emissions are also implemented in overseas factories where gas supply lines are not yet in place. This includes using tank lorries to transport liquefied natural gas in the Vietnam Plant and use of gas cylinders in the India Plant to replace heavy fuel oil.
Switch to gas cylinders in the India Plant

Installation of solar lights

Installation of outdoor lights using a combination of high efficiency solar panel and LED
The outdoor lights will be effective even in events of a disaster or power outage due to their independent power supply.
Installation of solar street lights
Installation of solar and wind powered street lights

Utilizing heat recovery technology to use factories’ waste heat for air-conditioning (absorption chilling equipment)

By adopting absorption chilling equipment, which uses heat recovery from waste heat etc., we are able to reduce CO2 emissions and also reduce peak electric power consumption during the summer months.
Absorption chilling equipment

Steam driven compressor

The plant gets air from air compressor powered by the energy harvested from the pressure difference as steam decompresses, which has never been used before.
Showing results in cutting down power consumption and CO2 emission.
Steam driven compressor

Energy saving improvements through heat insulation materials

We manufacture and install heat insulation materials fitting the size of equipment and piping.
We are implementing energy-saving activities that control heat release by installing heat insulation materials on and near steam pipework in our business locations both in Japan and overseas.
Pipe insulation

Energy-Saving Technology Committee

The Energy-Saving Technology Committee helps to improve the effectiveness of measures to reduce energy consumption through the adoption of energy management methods conforming to the Act on the Rational Use of Energy, the introduction of energy-saving equipment, etc.
Energy-Saving Technology Committee
As well, energy saving activities are implemented from the management level as well.
  1. Promoting the office black illumination, leaving work on time campaign
  2. Energy saving programs in summer (cool biz) and winter (warm biz)
  3. Thoroughly enforce turning off standing by power consumption of OA equipment
  4. Enhance energy saving awareness by making the energy consumption rate visible
  5. Develop a lateral spread of energy saving improvements by sharing case examples (database building)

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 emissions in collaboration with the supply chain.