025 gloria blue nega

Theme 1 : Enhancing Quality of Life

Relationship between Business Activities and the Environment

Relationship between Business Activities and the Environment

Relationship between Business Activities and the Environment

The Komatsu Group procures various parts and materials and, through the manufacturing process, utilizes the earth's resources, including raw materials, water, energy, and chemical substances, among others, to provide products to customers. Such business activities have the potential to impact the environment at each stage in the process.

The Komatsu Group will continue to provide high value-added products and services while assessing the environmental impacts resulting from its business activities, formulating medium- and long-term objectives, and introducing measures to reduce such impacts.

Environmental Impact Resulting from Business Activities of Komatsu Group Companies, including Facilities outside Japan (FY2018)

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Environmental Impact Resulting from Business Activities of Komatsu Group Companies, including Facilities outside Japan (FY2018)

Environmental Impact Indicators by Region

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Scope1 : CO2 emitted directly by manufacturing facilities

(by using generators, boilers, etc.)

Scope2: CO2 emitted indirectly by manufacturing facilities

(by purchasing electricity, steam and hot water)

Energy

Water Resources

CO2 (Scope1 and Scope2)

Waste

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Mitigating Climate Change through Products and Services



Mitigating Climate Change through Products and Service

The main bulk of CO2 emissions produced throughout the lifecycle of our construction equipment is centered on product operation, during which approximately 90% of emissions are produced. We have acknowledged this fact, and are working to reduce these operational emissions through three different initiatives: “Dantotsu Products”, “Dantotsu Service”, and “Dantotsu Solutions”.

Step1: Reduction of CO2 Emissions through Dantotsu Products

HB335-3
HB335-3

We provide products which have been designed to operate with great fuel efficiency while reducing gross CO2 emissions. Komatsu pioneered the creation and introduction of the hybrid hydraulic excavator, marked as the first of its kind to be introduced into the market.
These hybrid construction machines have been certified by the Ministry of Land, Infrastructure, Transport and Tourism of Japan as a “Low Carbon Type Construction Equipment.”
As of April 2018, a total of 12 of our hybrid models have received such certification, such as the HB205-2, HB215-2, HB335-3, and HB365-3.
In addition to this, another 11 of our product models (including the bulldozer D155AX-8, the hydraulic excavator PC300-11, the wheel loader WA470-8) have been certified to meet the Ministry of Land, Infrastructure, Transport and Tourism's “Construction Machines Fulfilling Fuel Economy Standards” signifying these products as construction equipment with great fuel efficiency.

Step2: Reduction of CO2 Emission by Products through Dantotsu Service (KOMTRAX)

The Komatsu Tracking System “KOMTRAX” is a system developed by Komatsu that automatically gathers the operational information/health information of our construction vehicles that operate all over the world, making it possible to then monitor/manage/analyze the vehicles remotely. Information with regards to operation times, fuel consumption, and other such relevant data is communicated to our customers via the internet, which is then analyzed to create opportunities for improvement. This enhanced operational efficiency helps to reduce fuel consumption, which results in a reduction in overall CO2 emissions.

Step3: Reduction of CO2 Emissions for Overall Construction Work through Dantotsu Solutions (SMART CONSTRUCTION using ICT Construction Equipment)

In 2013, Komatsu introduced the world’s first automatic blade control ICT bulldozer, D61PXi-23, to the North American, European, and Japanese markets. Following this, in 2014, Komatsu developed and released a hydraulic excavator with semiautomatic control functions (PC210LCi-10 for North America and Europe, and PC200i-10 for Japan). Preliminary calculations based on in-house testing were promising, with construction data for ICT hydraulic excavators showing that fore-slope shaping work using the PC200i-10 resulted in an approximate reduction of 30% in fuel consumption. In addition, the same testing showed that ICT bulldozers (like the D61DXi-23) used in land preparation work resulted in an approximate reduction of 25% in fuel consumption. Our testing with hydraulic excavators also showcased a significant decrease in CO2 emissions.
To consolidate our efforts in this sector, Komatsu is implementing “SMART Construction”, a system that uses ICT-type construction machines alongside drones and 3D scanners to take real-time topography measurements. This initiative helps showcase the efficiency of our machines by recording progress in construction sites and other relevant performance indicators.

Reduction of CO2 Emissions from Construction Equipment (Estimate of Amount of Reduction Contributions)

In Komatsu's Mid-term Management Plan (FY2016 - FY2018), we set the goal of achieving a total of 25% reduction by 2025 in CO2 emissions per unit of work from construction equipment, compared to our base year of FY2007. In order to assess our progress towards achieving this target, we have set up a number of key performance indicators, such as CO2 reduction resulting from fuel efficiency, work efficiency, and equipment capability as compared to FY2007.
Steady progress has been made, and we found that the machines manufactured in FY2018 achieved a reduction of 8.8% in CO2 emissions as compared to our base year. This equates to the reduction of 4.0 PJ in terms of energy. Constant operation of these machines for a year (about 1200 hours) would result in an overall reduction of 275,000 tons of CO2, an equivalent of approximately 58% of Komatsu's total manufacturing plant CO2 emission in FY2018.

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CO2 emissions for operation time of one year (kton-CO2)

CO2 emissions for operation time of one year (ton-CO2)
 

Electric Mini Excavator 
-Aiming to deliver environmentally and human-friendly next-generation construction machines-

Electric Mini Excavator exhibited at bauma 2019

Battery-powered mini-excavator exhibited at bauma 2019
* Details of the image are different from the exhibition model

Komatsu has developed an electric mini excavator with an eye to the next generation and exhibited it for the first time at the international construction machinery trade fair "bauma 2019" held in Munich.
The machine is equipped with the newly developed charger and high voltage conversion unit based on Komatsu's hybrid construction machinery and battery forklift technology, and demonstrates the same excavation performance as an engine-driven vehicle with the same output. It is an environmentally and human-friendly machine that achieves zero emissions and significant noise reduction.
The machine has proved highly efficient when working in hospitals, schools, and residential areas where there are concerns about emissions and noise, and in tunnels and buildings where emissions build up.

It is already being tested at an actual construction site, and we are aiming for an early introduction into the market.

Main Specifications

Item Exhibited vehicle specification
Bucket capacity(m3

0.09

Dimensions
  (for transport)  
Total length(mm)

4,950

Total width(mm)

1,740

Total height(mm)

2,570

Rear-swing radius(mm)

1,420

Machine weight(kg)

4,730

Motor output(kW)

18.2

Battery capacity(kWh)

36

PC2000-11(Tier4 Final)North America Specification
-Equipped with next-generation clean engine, environmentally friendly-

PC2000-11 (Tier4 Final) North America Specification

PC2000-11 (Tier4 Final) North America Specification
 

Komatsu has released the North America specification PC2000-11 (Tier4 Final) equipped with the new 12V140 engine (DEF/SCR not required), new high-capacity after-treatment device KDPF x 2, and auto idle shutdown function, complying with North American EPA Tier 4 Final emission regulations.
The relentless pursuit of a mine loader with greater productivity (work volume) has resulted in a 10% increase in engine power compared to the previous model, total power management to accommodate increased work volume, and enhanced operability due to the incorporation of new controls, increasing the work volume by 12% in P+ mode.
In addition, fuel efficiency has been further improved compared to the existing established model. Specifically, improved fuel consumption and fuel efficiency due to the further reduction of hydraulic loss and a new engine, as well as low speed matching have resulted in a 7% improvement in P mode, and an 8% improvement in E mode (both compared to P mode in existing model).

PC2000-11 Work volume, fuel consumption, fuel efficiency

Work mode Compared to existing 8 type P mode
P+ P E
Use Large output Prioritize output Prioritize fuel consumption
Work volume(t/h)

1.12

1.03

1.00

Fuel consumption(l/h)

1.08

0.96

0.92

Fuel efficiency(t/l)

1.04

1.07

1.08

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Initiatives to Mitigate Climate Change in Business Operations

Initiatives to Mitigate Climate Change in Business Operations

Reducing CO2 Emissions in Manufacturing Operations

As a part of our efforts to mitigate climate change, Komatsu set mid- and long-term objectives in Japan and at overseas operations about the amount of electricity, gas, oil and other types of energy used in research/development at our offices and in manufacturing operations. By using CO2 emissions per unit of manufacturing value as our main indicator, we aim to proactively reduce the amount of CO2 emissions per unit.
In 2010, in response to the climate change issues raised in the Post-Kyoto Protocol, we set a mid-term objective of a 40% reduction in CO2 emission levels by 2015, compared to the level in 1990. However, using the activities that followed the Great East Japan Earthquake as an impetus to cut electricity use by half, we have changed our midterm objectives and set the ambitious goal of a 54% reduction compared to FY2000 levels, pursued activities to reduce power consumption and achieved significant success. As a result, in February 2017, we received the Kanto Bureau of Economy, Trade and Industry Director's Award as a superior energy management business operator. From FY2016, we have set new mid- and long-term objectives for both domestic and overseas operations, and are moving forward with further activities for improvement.
In FY2018, because of the increase in production due to growing demand for construction/mine machinery, CO2 emissions increased in Japan and overseas. However, the emission intensity per production value declined from the previous year.
We promoted energy-saving activities through production reform across the company and the additional establishment of solar power plants in Japan, reducing the CO2 emission intensity per production value by 39.8% (slightly down from the previous year), compared to FY2000. In addition, the rate of renewable energy in in-house power generation increased because we minimized the use of fossil fuel in this process. Because of the proactive introduction of fuel shifts and green electricity (wind power), the CO2 emission intensity of overseas plants declined by 33.6% compared to FY2010, achieving the midterm objectives earlier. Moreover, the usage rate of renewable energy including green electricity in electricity consumed overseas increased to 11%. We aim to achieve the new midterm objectives in FY2019 and later, promoting improvement in the use of renewable energy to reduce CO2 emission intensity.

CO2 emissions, energy indicators in production activities

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CO2 emissions (Japan)

CO2 emissions (Japan)

CO2 emissions (Overseas)

CO2 emissions (Overseas)

Bangkok Komatsu’s "Safe energy, Save the environment":
Saving energy and reducing CO2 with solar roof

Power consumption (factories only) by Bangkok Komatsu was 4,653 MWh in FY2016 and increased by 5% to 4,887 MWh in FY2017. Thailand’s Board of Investment (B.O.I) set up the project for the entrepreneur to promote energy saving by installing the solar roof. With the B.O.I certificate, participating companies can deduct 50% of their invested amount for the solar system from corporate income tax. We started the phase 1 plan to install a solar roof with capacity of 853.3 kWp on the Fabrication Factory to assist fabrication and began internal solar power generation in July 2017, producing solar power of 690 MWh. In FY2018 we generated solar power of 885 MWh, up 30% from FY2017, accounting for 13.7% of power consumption (factories only) 6,492 MWh. In phase 2 of the solar roof project in phase, we are installing a solar roof with capacity of 920 kWp on the Assembly Factory (started in July 2019), and in phase 3 are going to install a solar roof with capacity of 1,412 kWp on the KOMATSU Way building, warehouse and Fabrication Factory to assist casting.

FY2018: Installed solar roof(920.7 kW)
FY2018: solar roof under construction

Certified as a CDP Climate Change A-List Company

Komatsu was certified as a Climate Change A-list company in 2018 by CDP, an international non-profit organization that provides environmental information disclosure systems.
These certifications are awarded to companies recognized as global leaders in addressing climate change.
Every year, CDP surveys the environmental impact of several thousand companies worldwide and their business risks as well as opportunities due to the impact, and announces its independent assessment. In 2018, CDP conducted a survey on behalf of 650 institutional investors, holding assets of 87 trillion USD and 115 companies, and organizations with raised funds of 3.3 trillion USD. The companies that respond to the survey are rated from A to D- based on their answers about issues such as climate change, deforestation, and water security.
Komatsu has positioned environmental activities as one of the highest priorities for management, and in the medium-term management plan with ESG (environment, social, governance) as an important field, we remain active. In particular, in order to dramatically reduce CO2 emissions, we will promote smart construction, which utilizes an ICT construction machine and IoT to realize future sites and production through connections. We are committed to achieving high energy savings in the field, and as the top leader in the industry, we will promote activities to achieve a low-carbon society.

A List

Reduction CO2 Emissions in Logistics

CO2 Emissions Reduction Conditions in Global Transport

(Basic Unit of CO2 Emissions per Cargo Weight: kg-CO2/ton)

In 2011, Komatsu began improving our data collection regarding CO2 emissions from logistics operations in our 10 major international business locations.Including the improvements that were implemented in domestic locations from 2006, we have now implemented improvements in logistics operations on a globally consolidated basis at all 25 business locations.
Domestically, we have continued to focus on reducing transportation distance by increasing the utilization rate of Kanazawa and Hitachi Naka Ports (which are located adjacent to manufacturing plants), as well as improving long distance and overland transportation through the use of coastal vessels and railways (modal shift).
As a result, in FY2018 we achieved a reduction of 3.6 points in CO2 emissions per cargo weight when compared to emissions in FY2017.
Our overseas operations also saw an improvement in the reduction of CO2 emissions, with a decrease of 6.0 points when compared to emissions in FY2017.

Global Shipment CO2 Emissions Volume and Basic Unit

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Global Shipment CO2 Emissions Volume and Basic Unit
* A basic unit index is an index relative to the CO2 emissions per cargo weight in a reference year (2006 for Japan, 2011 for Overseas) as 100.

CO2 Improvement for Domestic Transport (Expansion of near port usage of export vehicles)

Promoting the Utilization of Kanazawa Port

Background

  • Based on our vision for Komatsu as a company that is rooted in the local community (Ishikawa Prefecture), we initiated full-scale use of Kanazawa Port in 2008
  • We engaged in activities that contributed greatly to the community while working to reduce CO2 emissions and transportation costs, and alleviate the workload of truck drivers.
    We were also able to reduce CO2 emissions by 1,218 tons in FY 2018

【Recent main body shipment (construction machines, presses) numbers and CO2 suppression】

Examples of initiatives currently underway (increase in the use of container ships)

  • Super Rack Trial (bulldozer)

Overseas transportation ・improvement in CO2 emissions BKC (Thailand) Expansion of use of natural gas vehicles

As reported since 2016, NGV (Natural Gas Vehicles) continue to see an increase in popularity in BKC (Thailand), an overseas group company of Komatsu.The rate of NGV conversion (since its introduction) expanded to 78.6% in FY2018.
Cumulative total CO2 reduction at BKC was 738 tons - CO2(FY2012~FY2018)
The FY 2018 CO2 reduction amount of 201.5 (ton - CO 2) / year corresponds to 21% of BKC total emissions.

Reducing CO2 Emissions in Sales and After-sales Divisions, Main Partner Companies, and Non-manufacturing Divisions

Komatsu engages in continued efforts to assess and reduce the amounts of CO2 emissions across all areas of operations.
This encompasses not just our manufacturing plants, but also our sales and after-sales service divisions, main partner companies, and non-manufacturing divisions (like the head office and Technology Innovation Center). The table below summarizes the amount of CO2 emissions and energy consumption in these divisions and companies.

CO2 Emissions and Energy Consumption of Sales and After-sales Service Divisions, Main Partner Companies, and Non-manufacturing Divisions (FY2018)

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  Main sales and after-sales service divisions Main partner companies(93 companies) Komatsu
Non-manufacturing
CO2(kt)

7.6

406.6

5.4

Crude-oil equivalent
(1000kℓ)

4.4

193.8

2.8

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Amount of CO2 Emissions by Scope 3

Amount of CO2 Emissions by Scope 3

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In addition to CO2 emissions from production / sales / service etc., Komatsu aims to collate data regarding CO2 emissions from our entire supply chain, and reduce CO2 emissions. For that purpose, Scope 3 CO2 emissions are calculated each year.

Scope1:CO2 directly discharged from Komatsu (e.g. CO2 emissions during fuel combustion)
Scope2:Indirect emissions of CO2 due to energy use in Komatsu (e.g. CO2 emissions produced at power generation due to use of purchased electricity)

Scope3:Other indirect CO2 emissions
(Example) Upstream: CO2 etc. generated during manufacturing of purchased items
Komatsu: Transportation ・CO2 emissions occurring during commuting, business trips etc.
Downstream: CO2 emissions produced when using products, such as construction machinery

From live data gathered by KOMTRAX, Komatsu has gained perspective on the amount of CO2 emissions (Scope 3 Category 11) produced by our products manufactured in reported fiscal year in operation world-wide.
The calculation was performed as follows.

Calculation of Emissions from Customer Use

(1) Calculate the following by each model

CO2 emissions over the life of each model
= (Production Volume for reported fiscal year) × (Fuel Consumption; L/kWh) × (Engine Output; kW)
× (Engine Life; as product life; h) × (CO2 Conversion Factor)
 ※Data for fuel consumption(L/KWh)was collected using KOMTRAX as a representative model.

(2) Total these values, calculated for each model in (1) above

For others, including the 14 remaining categories, general CO2 emissions was calculated. The result is shown in the pie chart below.

  1. LCA refers to the environmental impact assessment method for individual products at each stage, from manufacture, transportation, sale, use, disposal, to reuse
  2. Scope 1 refers to direct CO2 emissions by operators (ex: fuel consumption)
  3. Scope 2 refers to indirect CO2 emissions by operators (ex: power purchase)
  4. Scope 3 refers to CO2 emissions by operators from within our supply chain (ex: emissions of product during operation, emissions from suppliers, transportation, business trips and commuting)
  • Calculating each category, the amount was calculated domestically and overseas. The amount of category (4): "Upstream Transportation disposal" was total of domestic and a part of overseas. In category (3): "Fuel Procurement", a part of data in overseas was estimated. The amount of category (13): "Downstream Leased Assets Operation" was included in category (11).

As evident from the results above, emissions during product use make up approximately 90% of total emissions.
From this, we can see that fuel-efficient products have a significant effect on reducing CO2 emissions.
Komatsu is committed to developing hybrid construction machinery (improving fuel efficiency by 25%) and DANTOTSU products (over 10% improvement in fuel efficiency). In addition to this, we are accelerating the development and implementation of our ICT-based SMART CONSTRUCTION business.

In addition, the results of our assessments regarding LCA * 1 (Life Cycle Assessment) can be found in the pie chart below.

«Reference» Pie Chart of Scope1, 2, 3

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Development of our “Reman” Remanufacturing Business

Promoting Recycling

Development of our “Reman” Remanufacturing Business

Our “Reman” business involves the remanufacturing of used engines, transmissions, and other key components of construction and mining equipment into “Remanned” components. After confirming that these remanufactured parts are possessed of the same quality as newly manufactured components, we inject them back into the market. We currently promote the “Reman business at 12 “Reman” Centers worldwide.

Reman (an abbreviation of remanufacturing) offers the following advantages to customers:

  • Quality and performance that matches new components
  • Lower cost for "remanned" components
  • Reduced idle time for construction equipment because of adequate inventory of "remanned" components
  • Resource conservation and waste reduction through reuse and recycling of components

We established PT Komatsu Indonesia (KI) as a global base, which supplies key components for large-size construction machinery and hydraulic cylinders like engines and transmissions. We also established PT Komatsu “Reman” Center Chile (KRCC) in Chile, which supplies components for electric dump trucks.
Additionally, Komatsu established PT KOMATSU REMANUFACTURING ASIA (KRA) in Indonesia to recycle all components of large-size construction machinery exclusively for the Indonesian market.
We have also established individual “Reman” centers for countries that are not part of our global supply chains (China, Russia, India and Brazil, Myanmar etc.).

Reman Factories and Centers map
Reman center in Komatsu Indonesia plant

Providing Reman-related Information

We have constructed a system called “K-WINS”, which shares technical information about “Reman” through an interconnecting network (“Reman-Net) of Komatsu “Reman” centers around the world. The data acquired from this system allows us to effectively develop our global “Reman” operations.
IC tags and two-dimensional bar codes are used to manage each item's remanufacturing history, and to track quality and durability information. This important information is reported to the Group, to help develop components with optimal service life.

Future Steps

To further increase the reuse rate of used components, the Komatsu Group is reducing the number of disposed parts by:

  • Developing parts for remanufacturing, oversized parts, etc
  • Developing recycling-related technologies (assessment and measurement for reuse, remanufacturing worn-out parts, cleaning, heat treatment, etc.)

to reduce waste components, and thereby further increase reuse and recycling activities.

Reman Process

Changes in Reman Sales (base FY2004 = 100)

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Effective resource utilization activity in production(Waste)

Activities to Effectively Utilize Resources in Production

1. Waste

Komatsu promotes activities to reduce waste generation from its production activities while also implementing "zero emission" activities to recycle and effectively use the generated waste.
While we sought to reduce the volume of waste by thoroughly implementing sorting and turning waste into valuable commodities, domestic waste generated per unit of production increased compared with the previous year due to an increase in waste sand disposal volume at our metal-casting plant, and the temporary generation of waste such as used tires. However, with a recycling rate of 99.7%, the target value was maintained.
Overseas waste generated per unit of production recorded a 10.4% reduction from FY2010 levels with thorough waste sorting efforts, and medium-term targets are achieved ahead of schedule.
A recycling rate of 97.3% was recorded, marking two consecutive years during which the 2020 target value was achieved.
From 2019 onwards, we will promote reduction activities primarily at foundries in Japan and overseas to meet new medium-term targets.

  Sector Base FY Objective FY Target Value
Reduction of Waste Generated Per Unit Domestic

2010

2020

Over 10%

Overseas
Maintenance and Improvement of Recycling Rate Domestic

-

Maintain

Over 99.5%

Overseas

-

2020

Over 95%

Waste indicators in production activities

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Amount of Waste Generated in Japan (Data coverage: Komatsu Ltd. and the Komatsu Group manufacturing facilities in Japan)

Amount of Waste Generated (Data coverage: Komatsu Ltd. and the Komatsu Group manufacturing facilities in Japan)

Amount of Waste Generated in overseas (Data coverage: The Komatsu Group manufacturing facilities in overseas)

Amount of Waste Generated (Data coverage: The Komatsu Group manufacturing facilities in overseas)

Examples of Waste Reduction Initiatives

Activities to reduce the amount of wood packaging materials for overseas used at the Kanazawa Plant

The Kanazawa Plant produces body forming presses for automotive manufacturers. The plant mainly transports its goods overseas, and when shipments weighing as much as several dozen tons are packaged, packaging made from wood materials has conventionally been used. To reduce the amount of wood resources used from the perspective of conserving the global environment, the plant is continually examining the packaging specifications of all transportation companies and determining whether non-wooden packaging materials can be applied to the products shipped from plants.
Even for heavy cargo, by shifting the packaging from wooden materials to steel, we have reduced the amount of wood being used. However, depending on the customer, there are often cases where the use of conventional wood based materials is requested. We consider possibilities to determine whether even in those cases, packaging specifications can be met while reducing the use of wood materials to the minimum. Due to built-to-order items, the shapes of products can vary wildly, but by achieving improvements such as taking cues from how products are suspended during the manufacturing processes, we were able to development new packaging specifications. We will continue to make improvements that give adequate consideration to the global environment.

 

Reduction in Wood Usage (-1,000kg / case)

Shape Dimensions (cm) (Kg) Weight of Packaging Materials (Kg)
L W H

Conventional packing

570

280

400

51,000

4,000

Improved packing

530

290

350

50,000

3,000

Difference

-40

10

-50

-1,000

-1,000

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Effective resource utilization activity in production(Water Resources)

2. Water Resources

In FY2016, we set new mid-term targets for water usage in our domestic and overseas manufacturing facilities and launched initiatives to reduce water consumption.
Domestically, we have managed to reduce water use per unit of manufacturing by 51.3% compared to FY2010 by reducing waste through the re-use of water within processes and daily management with a focus on sites in the Hokuriku area that use a lot of groundwater. In doing so, we have achieved our medium-term target ahead of schedule.
Overseas we also achieved our medium-term target ahead of schedule, managing to reduce water use per unit of manufacturing by 34.7% compared to FY2010 by recycling through the purification of process wastewater and by reducing waste.
From FY2019 onwards, we will promote further water usage reduction activities domestically and overseas to meet a new medium-term target.

  Sector Base FY Target FY Target Value
Reduction in Water Used Per Unit of Manufacturing Domestic

2010

2020

△40%+

Overseas

△10%+

Water Use Indicators in Production Activities

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Amount of Water usage in Japan (Data coverage: Komatsu Ltd. and the Komatsu Group manufacturing facilities in Japan)

Amount of Water Resources (Domestic)

Amount of Water usage in Overseas (Data coverage: The Komatsu Group manufacturing facilities in overseas)

Amount of Water Resources (Overseas)

Examples of Water Usage Reduction Initiatives

Using a pure water production system at the Osaka Plant, activities to reduce the volume of water use (increased use of recycled water)

At the Osaka Plant, a sand filter has been installed to recycle wastewater from production processes since 2004, and activities to reduce the amount of water used have been pursued over that time.
The recycled water is used as cooling water for heat treatment facilities and machining facilities as well as makeup water for paint booths.
In 2012, a cogeneration power generating system (gas engine) was installed as a part of efforts to reduce electricity consumption. The generating system performs peak electricity control and is also equipped with a boiler to reduce electricity usage by effectively utilizing waste heat. As a result, the system uses a lot of water. We wanted to use recycled water for the system, but as water quality control items such as total hardness and concentration were high, water was supplied through the water mains without using recycled water. As an activity to further reduce its water usage, the Osaka Plant considered supplying recycled water to this system.
As a result of the consideration, in 2017 a pure water production system equipped with an ion exchange resin tower that is able to remove the hardness components was installed.
In FY2017 and FY2018, about 3,000m3 of water was supplied through the pure water production system annually, and water usage of the overall Osaka Plant was reduced by 3%.

Items not conforming to the required water quality are treated with the pure water production system

Pure Water Production System

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