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We disclose specific data and figures to show results of our environmental initiatives.

CO2 emissions from scopes 1, 2 and 3

We are making efforts to reduce environmental impacts and CO2 emissions in our value chain from procurement to production to transport.
To ensure fairness, transparency and reliability regarding scopes 1 and 2 in fiscal 2015, we underwent a third party verification on energy consumption at each of our plants based on the Act on Rationalizing Energy Use (Energy Saving Act), and obtained an assurance.

CO2 emissions from scopes 1 & 2

Scope of calculation: Four plants in Japan (Tahara Plant, Okayama Plant, Kyushu Plant and Utsunomiya Plant)

CO2 emissions from scope 3

Scope of calculation: Transport of Tokyo Steel products to sales destinations

Reducing CO2 Emissions Associated with Wider Use of Our Products

We disclose reductions in CO2 emissions achieved through sales of our low-carbon-footprint products over the past five years.
We will continue efforts to reduce annual CO2 emissions by 10 million tons by 2030, and by 19 million tons by 2050.

Note: Reduction in CO2 emissions associated with wider use of our low-carbon-footprint products is calculated as follows:

Quantity of products alternative to blast furnace steel products = Total product shipment volume − Shipment volume of small/medium beams and reinforcing bars = Shipment volume of steel sheets, large beams and pipes
Reduction in CO2 emissions with replacement of blast furnace steel products = 0.5 t-CO2/t − 2.0 t-CO2/t = ▲1.5 t-CO2/t
Current reduction in CO2 emissions with wider use of our current low-carbon-footprint products = ▲1.5 t-CO2/t × Quantity of replacement of blast furnace steel products
Reduction in CO2 emissions with wider use of our low-carbon-footprint products by 2030 = ▲1.7 t-CO2/t × Quantity of replacement of blast furnace steel products
Reduction in CO2 emissions with wider use of our low-carbon-footprint products by 2050 = ▲1.9 t-CO2/t × Quantity of replacement of blast furnace steel products

For Wider Use of Renewable Energy

At our Tahara Plant, power producers are generating electricity from solar power and wind power by effectively using idle land on the plant premises. We will contribute to the use of low-carbon electricity through the wider use of renewable energy.

Power producer Generation method Generating capacity Electricity generated Start of operation CO2 reduction
C Energy Co., Ltd. Solar 15MW 15 million kWh/year May 2016 7,000 t-CO2/year1
Kanden Energy Solution Co., Inc. Wind 6MW 14 million kWh/year May 2014 4,900 t-CO2/year2
Power producer C Energy Co., Ltd.
Generation method Solar
Generating capacity 15MW
Electricity generated 15 million kWh/year
Start of operation May 2016
CO2 reduction 7,000 t-CO2/year1
Power producer Kanden Energy Solution Co., Inc.
Generation method Wind
Generating capacity 6MW
Electricity generated 14 million kWh/year
Start of operation May 2014
CO2 reduction 4,900 t-CO2/year2
  • 1 Disclosed by C Energy. Calculated based on CO2 emission factor of 0.469 kg-CO2/kWh of Chubu Electric Power Co., Inc. in fiscal 2011.
  • 2 Disclosed by Kanden Energy Solution. Calculated based on average CO2 emission factor of 0.405 kg-CO2/kWh of Chubu Electric Power Co., Inc. between fiscal 2008 and fiscal 2012.

Recycling of Waste

Promoting Zero-Emissions Activity

We will continue our zero-emissions activity to achieve the company-wide recycling target of 100% by promoting the reuse and recycling of production by-products (e.g., slag and dust), as well as materials generated by processes and ancillary equipment (e.g., sludge from water treatment and waste brick) within our premises, at our four plants in Japan.

Company-wide recycling rate

Environmental Recycling Business

We contribute to achieving a recycling-based society by taking advantage of the world’s top-level operation technology to detoxify waste at our electric arc furnaces.
Our Okayama Plant obtained an approval to treat waste dry-cell batteries in 2016, and has since recovered iron, zinc and other metals through treatment of waste dry-cell batteries at its electric arc furnace.

For information on waste treatment facility maintenance at the Okayama Plant, click here.

Initiatives for “Car to Car” Recycling

Manufacturing Automotive Steel Products Using Steel Scrap and Promoting Horizontal Recycling

Tokyo Steel has established technology for manufacturing high-quality steel products produced mainly from steel scrap by taking advantage of tramp elements and rare metals contained in it.
By preventing Cu embrittlement and reducing irregularities in quality with advanced process control, we are making advanced use of steel scrap and expanding the scope of application of electric arc furnace steel products.

There are enormous amounts of steel scrap from automobiles (e.g., busheling scrap generated in production process, shredded scrap, and “A press for full use”), providing precious steel resources.
Promoting the achievement of “Car to Car” recycling—horizontal recycling of such steel scrap as the main raw material for automotive steel products—is quite meaningful in building a recycling-based society in Japan. We are carrying out R&D and manufacturing at our Tahara Plant, Japan’s most advanced plant dedicated to thin steel sheets.

Outline of Study on the Advanced Utilization of Iron and Steel Scrap conducted for the Ministry of the Environment

Research results
Tokyo Steel has conducted studies including the following:

Reducing Environmental Impacts by Promoting Use of A Press

Currently, the Automobile Recycling Act requires car manufacturers, etc. to receive, destroy and recycle air bags, fluorocarbons and automobile shredder residue (ASR).
Full recycling (hereinafter, “full use”) aims to recycle end-of-life cars in a way that will not generate ASR. Carmakers entrust scrap companies to dismantle end-of-life cars in a sophisticated way to produce press for full recycling (hereinafter, “A press for full use”), which will be delivered as a raw material for steelmaking to electric arc furnace steel manufacturers, where it is put into electric arc furnaces, together with seats, interior parts and glass, for effective recycling.

Since 2013, Tokyo Steel has received A press from contracting scrap companies to a consortium agreement.
As a leading electric arc furnace steel manufacturer, Tokyo Steel is the largest user of A press for full use in Japan.

Plant TH team
Tahara Plant 2013-11-07
Okayama Plant 2014-02-03
Kyushu Plant 2013-10-07
Utsunomiya Plant 2015-11-05
Tahara Plant
TH team 2013-11-07
Okayama Plant
TH team 2014-02-03
Kyushu Plant
TH team 2013-10-07
Utsunomiya Plant
TH team 2015-11-05

Note: There are two consortium evaluation/examination teams: TH team (eight companies, including Toyota and Honda) and ART team (13 companies including Nissan, Mazda, Mitsubishi and Subaru).

Use of A press for full use