Energy Material Balance
Energy and resource circulation in business activities
We use industrial water and energy resources such as electricity and fuel in producing steel products, which are mainly made of iron ore mined overseas, coal used as a raw material for reducing iron ore, and iron scrap recycled by society.
Nippon Steel’s steelworks use 100% of by-product gas generated in the steelmaking process, as fuel for heating of steel or as energy for an onsite power plant. Concerning water resources, 90% of water used in cooling and cleaning of products and manufacturing facilities are reprocessed and repeatedly used. These are examples of our efforts to make maximum use of limited resources and energy, without waste.
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Numbers represent FY2021 performance
1 Purchased electricity (kWh) excludes electricity purchased from Cooperative Thermal Power Companies
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| Input Material | FY2016 | FY2017 | FY2018 | FY2019 | FY2020 | FY2021 |
|---|---|---|---|---|---|---|
| Iron ore | 6,255 | 5,942 | 5,861 | 5,777 | 4,877 | 5,641 |
| Coal | 2,937 | 2,654 | 2,519 | 2,624 | 2,437 | 2,574 |
| Waste plastics | 21 | 21 | 18 | 21 | 21 | 22 |
| Waste tire | 7 | 7 | 7 | 7 | 8 | 3 |