Preventing Global Warming

Global Warming Prevention Policy and Framework

The large number of disastrous extreme weather events believed to have been caused by global warming in recent years (superstorms, floods, droughts, etc.) has engendered a growing sense of concern with respect to global economic risk. We have set clear targets based on our environmental policy for each of our plants for the purpose of achieving a steady reduction of CO2 emissions while actively developing and supplying products and services that will contribute to realization of a low-carbon society.
Our cement business not only produce CO2 through their use of energy sources, but they also produce CO2 emissions through the thermal decomposition of limestone, the main raw material in cement production. Any tightening of regulations on greenhouse gas emissions (including emissions trading schemes) could therefore pose a considerable financial risk to the Group. At the same time, however, demand for technologies and products that contribute to saving energy and reducing CO2 emissions is expected to grow, creating more future business opportunities as a result. We are also proactively developing damage prevention measures with respect to heavy rainfall and storm surges associated with extreme weather.
The Company's Global Environment and Energy Committee (comprising members of the Corporate Strategy Committee) takes the lead in formulating strategic initiatives in response to risks and business opportunities related to climate change from a comprehensive medium- to long-term perspective. In fiscal 2019, the Committee made the decision to begin considering ways of introducing an internal carbon pricing system.

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Comprehensive Initiatives Aimed at Preventing Global Warming and Establishing a Recycling-Oriented Society

We have set out a vision aimed at becoming "the leading business group committed to creating a sustainable world through materials innovation, with use of our unique and distinctive technologies, for People, Society and the Earth." With this vision in mind, and taking into account our broader goal of creating a sustainable society, we have set ourselves targets for the prevention of global warming, and are working on a comprehensive range of initiatives to achieve those targets, alongside targets aimed at helping to establish a recycling-oriented society.

Targets for 2020 and Results/Progress in FY2018

☆☆☆☆ :100% or higher achievement of milestones at the end of fiscal 2016 for achieving the 2020 targets,
☆☆☆ :Between 80% and 100% achievement,
☆☆ :Between 50% and 80% achievement,
☆:Less than 50% achievement

[Cement] All facilities (Aomori, Iwate, Yokoze, Kyushu, Higashitani)

Improve energy efficiency steadily through the installation of energy saving equipment. Promote the use of waste and byproducts from other industries as alternative materials for cement

Preventing global warming
Targets Results/Progress
Energy consumption per unit Reduction of 1.2%
(compared to FY2011)
1.9% increase compared to FY2011
(Milestone: 0.7% decrease)
☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
Alternative waste/byproducts per unit 435 kg per ton
(Baseline: 406 kg per ton)
436 kg/t
(Milestone: 431 kg/t)
☆☆☆☆
Percentage of alternative thermal energy Increase of 2%
(compared to FY2011)
1.8% decrease
(Milestone: 1.3% increase)
☆

[Metals] Naoshima Smelter & Refinery

Install high-efficiency equipment, and upgrade or install heat recovery and other such equipment at copper smelting facilities, in order to improve energy efficiency. Cater to growing volumes of E-Scrap overseas, reinforce pre-treatment facilities, and step up recycling operations.

Preventing global warming
Targets Results/Progress
Energy consumption per unit Reduction of 1% per year
(14% overall reduction compared to FY2006)
0.3% increase compared to FY2006
(Milestone: 11.4% decrease)
☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
Volume of E-Scrap processed Over 100,000 tons per year 85,000 t/year
(Milestone: 106,000 t/year)
☆

[Metals] Sakai Plant

Upgrade equipment to energy saving models as part of manufacturing processes for copper and brass materials, copper alloys and processed copper products.

Preventing global warming
Targets Results/Progress
Energy consumption per unit Reduction of 1% per year
(14% overall reduction compared to FY2006)
0.7% increase compared to FY2006
(Milestone: 11.4% decrease)
☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
Waste oil/acid Reduction of 40%
(compared to FY2006)
212% increase
(Milestone: 32% decrease)
☆

[Advanced Materials & Tools] Tsukuba Plant

Upgrade water chillers and heaters as part of air conditioning systems, and other equipment, to energy saving models in the manufacturing process for cemented carbide tools, and improve the overall efficiency of production equipment.

Preventing global warming
Targets Results/Progress
Energy consumption per unit Reduction of 20%
(compared to FY2006)
16.2% increase compared to FY2006
(Milestone: 16% decrease)
☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
Scrap generated Reduction of 40%
(compared to FY2010)
20.7% decrease
(Milestone: 29.1% decrease)
☆☆

[Advanced Materials & Tools] Gifu Plant

Upgrade compressed air systems as part of the manufacturing process for cemented carbide tools, reduce liquid waste through measures to prevent leeks, and focus on development of environmentally friendly products.

Preventing global warming
Targets Results/Progress
Energy consumption per unit Reduction of 15%
(compared to FY2006)
30.2% decrease compared to FY2006
(Milestone: 12% decrease)
☆☆☆☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
Incorporate industrial waste indicators (volume of industrial waste produced per production value) into each medium-term plan, and continue to achieve 100%. 25.3% decrease compared to FY2013 reference value
(Milestone: 24.2% decrease)
☆☆☆☆
Continue to achieve targets for the number of certified environmentally friendly products set out in each medium-term plan. Development theme completion (1 goal) → Drills for CFRP processing / MC series (1 case)
☆☆☆☆

[Advanced Materials & Tools] Akashi Plant

Reduce losses as part of the manufacturing process for cemented carbide products, through TPM activities, and improve wastewater processes.

Preventing global warming
Targets Results/Progress
Energy consumption per unit Reduction of 10%
(compared to FY2011)
1.0% decrease compared to FY2011
(Milestone: 8% decrease)
☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
COD load
No more than 1 ton per year
0.591 t/year
(Milestone: 0.815 t/year)
☆☆☆☆

[Electronic Materials & Components] Yokkaichi Plant

Upgrade refrigeration systems and other equipment to energy saving models as part of the manufacturing process for silicon products, and improve treatment processes for wastewater.

Preventing global warming
Targets Results/Progress
Energy consumption per unit Reduction of 1% per year
(14% overall reduction compared to FY2006)
1.6% increase compared to FY2006
(Milestone: 11.4% decrease)
☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
Industrial waste generated per unit
(tons per ton- products)
Reduction of 56.3%
(compared to FY2006)
50.0% decrease
(Milestone: 47.8% decrease)
☆☆☆☆

[Electronic Materials & Components] Ceramics Plant

Upgrade air conditioning systems and other equipment to energy saving models as part of the manufacturing process for electronic devices. Develop commercial temperature sensors for motorcycles.

Preventing global warming
Targets Results/Progress
CO2 per unit Reduction of 30.8%
(compared to FY2006)
45.8% decrease compared to FY2006
(Milestone: 28.7% decrease)
☆☆☆☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
Number of environmentally friendly products
At least one per year
1 or more cases/year → 4 cases/year
(sensors: 2; surge absorbers: 1; antennas: 1)
☆☆☆☆

[Electronic Materials & Components] Sanda Plant

Upgrade coolant water systems and other equipment to energy saving models as part of the manufacturing process for functional materials. Continue to develop next generation components for high efficiency inverters.

Preventing global warming
Targets Results/Progress
Energy consumption per unit Reduction of 1% per year (15% overall reduction compared to FY2006)
* Specific to this plant
30.4% decrease compared to FY2006
(Milestone: 16% decrease)
☆☆☆☆
Creating a recycling-oriented society/contributing to the environment
Targets Results/Progress
Develop next generation components for high-efficiency inverters (Effect of reduction in CO2 emissions when using products: at least 3 times that in FY2009) 1.9 times
(Milestone: 2.8 times)
☆☆

Changes in energy consumption per unit (non-consolidated)

Changes in energy consumption per unit  (non-consolidated)

Changes in greenhouse gas emissions per unit (non-consolidated)

Changes in greenhouse gas emissions per unit (non-consolidated)

* Energy consumption per unit is calculated in accordance with the periodic report guidelines prescribed under Japan's Act on the Rational Use of Energy (Energy Conservation Act). As the Company's business is diverse, we identify a "value intimately related to energy use" for each business and use it as the denominator for calculations. We calculate each business's contribution by multiplying the year-on-year of each business's energy consumption per unit with that business's share of the Company's total energy use. The product is the Company's total consumption per unit (year-on-year). Greenhouse gas emissions per unit is calculated in the same way.

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Fiscal 2018 Reduction Activities

Progress towards targets in FY2018

As for accomplishing our Global Warming Prevention goals, we achieved at least 100% of fiscal 2018 levels for 3 out of 9 units and less than 50% for the remaining units.
As for our Building a Recycling-Oriented Society / Environmental Contributions goals, we achieved at least 100% for 5 out of 11 items and less than 50% for the remaining 3 items.
The most common reason for achieving less than 50% was that "The external environment and other operation conditions had changed from what was expected when the goals were first set." Plants with low achievement rates are taking measures to achieve the goals.

Principal Initiatives at Each Business

We regard it as a top priority to save energy wherever possible at our manufacturing facilities and plants. That is why we are so committed to energy saving activities.
Specific activities include switching fuels, making effective use of untapped energy, upgrading processes and equipment, installing high-efficiency equipment, optimizing device specifications, and reviewing equipment controls and operating practices. We are constantly working to save energy at smaller facilities, too, including Head Office, branches, sales offices and research facilities, through measures such as installing LED lighting.

The Cement Business

We are working to reduce power consumption, through measures such as ensuring adequate mill maintenance, reviewing maintenance of exhaust heat power generation systems, increasing electrical equipment efficiency, and switching to LED lighting, as well as to improve energy efficiency through initiatives such as increasing the amount of alternative thermal energy sources that we use, and making energy-saving upgrades to burning equipment.

The Metals Business

We are working to increase energy use efficiency through measures such as saving energy from compressors and related equipment, increasing efficiency from transformers and motors, and switching to LED lighting, as well as to improve energy efficiency through initiatives such as reviewing operations for individual furnaces, in order to reduce fuel oil consumption.

The Advanced Materials & Tools Business and the Electronic Materials and Components Business

We are working to reduce power consumption through measures such as improving water pump controls, saving energy from air conditioning, refrigeration, compressors and related equipment, installing higher efficiency electrical equipment, switching to LED lighting, and upgrading various other processes, as well as to improve energy efficiency through initiatives such as optimizing controls on boilers and heat recovery equipment.

CO2 derived from energy sources (nonconsolidated)*

CO<sub>2</sub> Derived from Energy Sources (nonconsolidated)

* CO2 derived from non-energy sources comes mainly from limestone, which is used as a raw material. As it is difficult to substitute or reduce volumes of limestone, however, our emissions target covers CO2 emissions derived from energy sources, which can be reduced by energy saving initiatives.

Total greenhouse gas emissions (nonconsolidated + main consolidated subsidiaries)*

Total greenhouse gas emissions (nonconsolidated + main consolidated subsidiaries)

Breakdown of total emissions for Fiscal 2018*[Thousand tons CO2 equivalent]

Category Non-consolidated Domestic group
companies
Overseas group
companies
Total
companies
Total 8,098 1,660 2,047 11,805
SCOPE 1
(direct)
From energy sources (fuel, etc.) 2,924 563 768 4,255
From non-energy sources From processes 4,143 194 692 5,029
From waste 418 267 30 716
Greenhouse gases other than CO2 20 35 5 60
(Reference) Total from non-energy sources 4,581 496 727 5,805
Subtotal 7,505 1,059 1,495 10,060
SCOPE2
(indirect)*
From energy sources (power, etc.) 593 600 552 1,745
(Reference) Total from energy sources 3,517 1,163 1,320 6,000
  • * "Group companies" includes 129 consolidated subsidiaries (66 domestic, 63 overseas).
  • * The above data has been calculated in accordance with Version 4.3.2 of the Manual for Calculating and Reporting Greenhouse Gas Emissions.
  • * SCOPE2 (Indirect) shows market base emissions. It is 1,750 [thousand t-CO2e] for location base.

Eighth Eco Contest

We have been running an award scheme to promote activities at facilities throughout the Mitsubishi Materials Group since fiscal 2011, aimed at preventing global warming, preserving resources, and protecting the environment. The results of our fiscal 2018 contest are outlined as follows.

Best location award: Fuji Oyama Plant, Universal Can Corporation

They are actively engaged in activities on the environmental priority themes of "promoting energy-saving," "preventing environmental pollution" and "managing waste" as they strive to reduce their environmental impact. Specifically, they actively promote activities for reducing waste, including switching to LED lighting and other energy-saving activities as well as turning metal scrap into valuable resources. They achieved the goals for each activity, successfully reducing the plant's overall energy and waste unit consumption.

Best activities award: Sanpo Plant, Mitsubishi Shindoh Co., Ltd.

Centering on an Energy-Saving Committee (at the plant) comprising expert and local staff, they have developed energy-saving themes and are conducting activities based on a thorough discussion of return on investment. They conducted plant energy-saving contests and other energy-saving activities (adopting fan and pump inverters, renewing worn-out gas equipment, collecting and using equipment waste heat as well as air-cooling in the annealing process instead of water-cooling), reaching the goals for each activity. Through such participative activities supported by all members, they also seek to raise the staff's energy-saving and cost awareness.

Logistic Initiatives

Our CO2 emissions from logistics for fiscal 2018 totaled 43,910 tons for Mitsubishi Materials (up 482 tons from the previous year), and 77,320 tons on a consolidated basis*1 (down 358 tons). Energy consumption per unit*2 meanwhile came to 15.95 kiloliters per million ton-kilometers for Mitsubishi Materials (0.5% worse than the previous year), and 19.87 kiloliters per million ton-kilometers for the group as a whole (0.2% worse than the previous year).
We are working on initiatives such as promoting a modal shift and improving shipping efficiency by road, as we continue to optimize logistics throughout the group and minimize the resulting impact on the environment.

  • *1 Consolidated figures refer to six companies classified as "Designed shippers," accounting for over 90% of emissions among domestic group companies.
  • *2 Refers to the amount of energy consumed in kiloliters crude oil equivalent (kl) divided by transportation in ton-kiloliters (million ton-kilometers)

CO2 emissions according to mode of transport[Unit: Tons CO2]

  FY2017
Mitsubishi Materials Group companies*1
Total 43,428 34,257
Road 8,224 26,459
Rail 1 32
Ocean 35,143 7,766
Air 59 0
  FY2018
Mitsubishi Materials Group companies*1
Total 43,910 33,410
Road 8,694 26,246
Rail 35,154 7,137
Ocean 1 28
Air 61 0

Recovery and Underground Storage of CO2

photoOutline of CCS as part of demonstration testing in Tomakomai (courtesy of Japan CCS Co., Ltd.)

photoCO2 recovery plant (courtesy of Japan CCS Co., Ltd.)

We have been keeping a close eye on new carbon dioxide capture and storage (CCS) technology, capable of isolating and recovering CO2 from production activities and storing it underground, rather than releasing it into the air. In May 2008, we invested in Japan CCS Co., Ltd. , which was established with the aim of developing and conducting feasibility studies into the relevant technology. Through Japan CCS, we intend to harness outstanding technologies and human resources that we have built up as a group over many years, in areas such as geological assessment, in order to participate in large-scale CCS demonstration testing in Tomakomai and studies into suitable locations for CO2 storage. We also signed up to an environmentally friendly CCS testing project headed by the Ministry of the Environment in fiscal 2017, and will be contributing to assessment studies for CO2 storage.

Towards Commercialization of Bioplastic Materials Derived from CO2-sequestering Algae

photoAlgae culture (photosynthesis) using sunlight and CO2 released from a cement factory

photoPrototype algae bioplastic

(Courtesy of the University of Tsukuba)

This R&D has been adopted by the Ministry of the Environment as a "Development and Demonstration Project for Reduction of CO2 Emission" performed by University of Tsukuba as a representative organization. We aim to realize to put "highly functional algae-derived plastic" into practice within fiscal 2022.
If cement manufacturing process as CO2 source and algae culturing process as efficient CO2 fixation are combined and highly functional bioplastic can be produced from emitted CO2, it is possible to produce a substitute for petroleumbased synthetic plastics and contribute to a low-carbon, recycling society.
In collaboration with University of Tsukuba, Sobio technologies Inc. and NEC Corporation, we started joint development for practical application of this technology.

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