The Environment



Move the screen to the left or right to see the table information

Item FY 2019 results FY 2020 results
Total energy consumption (Consolidated) 1,787,203MWh
* Crude oil equivalent: 451,777 KL
(Consolidated) 1,647,934MWh
* Crude oil equivalent: 416,550 KL
Total external energy consumption
* Reported as Scope 3 (Other emissions)
642,483,051 MWh 587,527,401 MWh

Responsible Departments

Each business location
  • Activities are conducted by each business location, and the Global Warming Countermeasures Committee that the Environmental Protection Promotion Department serves as a secretariat for implements company-wide policy discussions and activities.

Stance and Target

Why is “Energy” a critical issue to be addressed?
Explanation of the reason and background

The Yokohama Rubber Group, which conducts production activities in 13 countries (Japan, United States, the Philippines, China, Thailand, Russia, Vietnam, India, Taiwan, Indonesia, Italy, Mexico and Israel) around the world, uses a large volume of energy in each business process. Because the reduction of energy consumption will lead to a response to the issue of climate change that is a problem on a global scale, the effective use of resources that are becoming depleted, and cost reductions, we have selected energy as a critical issue to be addressed.

Policies and stance relating to energy

The Yokohama Rubber Group has embodied our stance towards the environment in the Yokohama Rubber Environmental Policy and will work to minimize the burden on the environment by the provision of products and services in accordance with the Yokohama Rubber Group Action Guidelines. To this end, we take steps to realize sustainable, appropriate energy use and reduction of energy consumption throughout the value chain, starting from the design and manufacturing stage, by developing and adopting environmentally friendly technologies and working closely with everyone involved in the provision of related products and services.
We will conduct activities in an aim for the appropriate use and reduction of energy in accordance with international agreements concerning the proper use of energy, the regulations of countries where we conduct business (such as Japan’s Act on the Rational Use of Energy and Act on Promotion of Global Warming Countermeasures), and the policies of related organizations.

Vision (attainment goal) / target

In line with our shared global goal of reducing greenhouse gases by half by 2050, the 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, reduce total CO2 emissions throughout the entire value chain of the Group by at least 50% of total CO2 emissions in the base year (fiscal 2005).
  • Mid-term target:
    • By 2030, reduce manufacturing-related CO2 emissions per unit of net sales, including both Scope 1 and Scope 2 emissions within the Group and (through collaboration with our partner companies) manufacturing-related CO2 emissions throughout the value chain, by at least 30% compared to the base year (2013).

Measures for vision achievement

We will implement the following measures aimed at promoting the appropriate use and reduction of energy throughout overall business activities.
  1. Promotion of a modal shift in logistics
  2. Management of energy in production
    We will promote the effective use of energy through system improvements, savings improvements, process improvements, the development of management systems, the introduction of production systems, and the introduction of new energy (renewable energy) in the production process.
  3. The Yokohama Group will establish seven energy-saving subcommittees under the supervision of the Global Warming Countermeasures Committee, and will promote energy reduction activities.
  4. We will promote the development and sales of eco-products in order to reduce the amount of energy use when products are used.

Review of FY 2020 Activities

In Japan, Yokohama Rubber's non-consolidated GHG emissions were reduced by 22% compared to fiscal year 2013 as a result of system improvements (the development of energy-efficient vulcanization systems, and utilization of cogeneration), savings improvements (expanded use of LED, improvements in capacity utilization), process improvements (optimization of the rubber kneading process), and the introduction of new energy (introduction of solar cell power generation systems).
Overall picture of the environmental burden in Japan
Overall picture of the environmental burden overseas

Introduction of Initiatives

Reduction of energy usage and CO2

  • Target: Reduce CO2 emission by 25% by 2020 compared to the base year of 2006.
  • Results: In fiscal 2020, although there was a decrease in sales volume due to COVID-19, we were able to reduce emissions to 16,286 tons-CO2, a 17% decrease from the previous year, by reviewing transportation routes, reducing warehouse transportation volume, and improving loading efficiency. On the other hand, the unit requirement worsened by 4.6% to 43.9 KL/million ton-kilometer.
CO2 emissions and emissions per unit of output (from 2006)
* Yokohama Rubber on a non-consolidated basis
Rail transport for Shinshiro to Kyushu shipments

Energy management

  1. Use of in-house power generation
  2. Control of peak demand through demand control equipment
  3. Building and roof heat retention and insulation
  4. Investment in production facilities (improvement of efficiency of air conditioners, motors and pumps, reduction of compressed air pressure, control of the number of compressors)
  5. Energy conservation diagnosis and implementation of improvements
Energy consumption per unit was reduced through the efforts noted above.

Full Operation of Co-generation Systems

At tire plants that use a large volume of energy and steam, it is possible to achieve a significant reduction in CO2 emissions through the adoption of co-generation systems that supply energy and steam at the same time. As of 2019, co-generation system had begun operation at three domestic plants. As a result of continuous 24-hour operations, 72% of the energy and nearly all of the steam used by these plants are now supplied by the co-generation systems, contributing to a reduction in CO2 emissions and a reduction in peak electric power consumption and in the overall amount of power purchased from the electric company. This was also adopted at the Thai Plant.
Mie Plant co-generation system
Mishima Plant co-generation system
Shinshiro Plant co-generation system
Thai Plant co-generation system

Improving the efficiency of production equipment motors and pumps

We have upgraded production equipment motors and pumps that consume large volumes of energy to high-efficiency models, and also reviewed capacity to achieve major energy savings compared to previous equipment.
In addition, we are reducing power consumption during standby hours by converting hydraulic units to inverters.
High-efficiency motor
High-efficiency motor
Hydraulic unit inverterization

Improving the efficiency of production equipment cooling-water pumps

We have upgraded the cooling-water pumps which play a vital role in supplying cooling-water for tire production facilities 24 hours a day with new, highly-efficient models, thereby reduced electric power consumption. We have also measured the pump flow rate required for the equipment and changed to an appropriate pump capacity (smaller) to reduce power consumption. We are also optimizing the chiller tank capacity of the cooling system.
Cooling-water pump
Optimizing the chiller tank

Adoption of LED lights

We are replacing the ceiling lights (mercury and fluorescent) in our buildings in Japan and overseas with LED and high-efficiency ones to significantly reduce the power consumption of lighting. We are also reducing the amount of light when we are on break or away from the workplace.
Mercury lighting → LED lighting
Replacement of lighting

Solar power generation

We are proceeding with the installation of environmentally friendly, renewable solar power generation facilities.
The facilities were adopted also in plants in India and China (Suzhou) in fiscal year 2017, and in the Philippines in fiscal year 2019.
Solar power generation (Suzhou, China) installed capacity: 3,000 kw
Solar power generation (Hangzhou, China) installed capacity: 80 kw
Solar power generation (India) installed capacity: 200 kw
Solar power generation (Mie) installed capacity: 500 kw
Solar power generation (Philippines) installed capacity: 4,000 kw


Food waste was going to landfill at the Tirunelveli plant in India. The problem was hygiene and the generation of methane, which has an emission factor 25 times higher than that of CO2. Therefore, we built a biogas plant and processed 250 kg of food waste per day to generate gas. The amount of LPG gas used was reduced and the plant has so far been able to reduce the generation of 44.3 tons of CO2.

Energy Saving Month activities

Based on the vision of “Connect everyone’s wisdom and ingenuity, start winter energy saving on your own,” we shared awareness of the significance energy saving to “strengthen corporate competitiveness through cost reductions, respond to fossil fuel depletion, reduce the burden on the global environment, and have corporate social responsibility,” and made preparations for the practice; thereby during the energy-saving month of February, significant results were achieved through the accumulation of multiple small efforts, thanks to effective coordination between the production department, equipment maintenance department, and administration department at plants. For example, the maintenance department conducted an energy saving audit, inspected and found steam and air leaks, and made repairs.
Education activities during the Energy Saving Month
Leakage inspection and visualization
Leak repair

Energy saving subcommittee

Energy saving subcommittees are held by energy saving staff to follow up on annual energy saving reduction plans, capital investment, and progress, and are effective in reducing energy consumption.
Activities of the Energy Saving Subcommittee
Activities of the Energy Saving Subcommittee

Activities to strengthen energy management based on guidance from consultants.

We are strengthening energy guidance through means such as reductions in energy loss in line with production variation (switching equipment on and off), representing the adoption of a just-in-time system for energy.
Consultants provide guidance every year at business locations in Japan and overseas.
Provision of guidance by consultants
Provision of guidance by consultants

Issues and Future
Improvement Measures

We will have reductions in total energy use as we plan to continue expanding the introduction of cogeneration systems.
With the aim of increasing the renewable energy usage ratio, we plan to expand the introduction of solar power generation, etc. in order to increase the percentage of our business locations that use renewable energy.