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Potential for energy efficiency improvement and greenhouse gas mitigation in Canada’s iron and steel industry

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Abstract

The global demand of steel production is growing, and so are the carbon dioxide emissions from the sector. Research has confirmed that 15 to 20% further energy efficiency improvement is possible, which would reduce the sector’s greenhouse gas emissions and help meet global emission reduction initiatives. In this context, this research aims at developing a bottom-up system-based model to evaluate the long-term potential of energy efficiency alternatives in greenhouse gas mitigation. A case study was conducted for the Canadian iron and steel sector. The developed framework involves review of the state of the art in iron and steel production technologies, demand tree development, energy-environmental modeling, scenario development, and analysis. Twenty-six mitigation scenarios were developed in planning horizons ending in 2030 and 2050. A 13% improvement in Canadian iron and steel energy efficiency could be achieved by increasing the production share of the electric arc furnace route from 41% in the base year to 56% by 2050. The results of the analysis suggest that 19 and 38 million tonnes of greenhouse gas emission reduction are achievable in the 2010–2030 and 2010–2050 planning horizons, respectively. This translates to an approximately 6% reduction in emissions compared to the baseline scenarios at a cost of − $76 and − $51 per tonne of carbon dioxide equivalent in the 2010–2030 and 2010–2050 time periods, respectively. The results also reveal that more than 85% of the potential emission reductions are achievable with negative costs and are economically attractive. The study provides insights to decision makers at different levels of industry and government.

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Abbreviations

BAU:

Business-as-usual

BF:

Blast furnace

BOF:

Basic oxygen furnace

CAD:

Canadian dollar

CF:

Cash flow

COG:

Coke oven gas

CSE:

Cost of saved energy

DRI:

Direct reduced iron

EAF:

Electric arc furnace

EBT:

Electric bottom tapping

EC:

Energy consumption

EE:

Energy-efficient

GHG:

Greenhouse gas

GJ:

Gigajoule

LEAP:

Long-range Energy Alternatives Planning

NPV:

Net present value

O&M:

Operation and maintenance

PJ:

Petajoule

SEC:

Specific energy consumption

TJ:

Terajoule

UHP:

Ultra-high power

US:

United States

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Acknowledgments

We thank the representatives from Alberta Innovates (AI), Cenovus Energy Inc., Suncor Energy Inc., Environment and Climate Change Canada (ECCC), Natural Resources Canada (NRCan), and Alberta Department of Energy for their inputs in various forms. As a part of the University of Alberta’s Future Energy Systems (FES) research initiative, this research was made possible in part thanks to funding from the Canada First Research Excellence Fund (CFREF). The authors also thank Astrid Blodgett for the editorial assistance.

Funding

The NSERC/Cenovus/Alberta Innovates Associate Industrial Research Chair in Energy and Environmental Systems Engineering and the Cenovus Energy Endowed Chair in Environmental Engineering provided financial support for this project.

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Correspondence to Amit Kumar.

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The authors declare that they have no conflict of interest.

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Appendix

Appendix

Cost of saved energy results

Table 8 Costs of saved energy (CAD/GJ) by scenario

Sensitivity analysis results

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Sensitivity of the results to input parameters

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Talaei, A., Ahiduzzaman, M., Davis, M. et al. Potential for energy efficiency improvement and greenhouse gas mitigation in Canada’s iron and steel industry. Energy Efficiency 13, 1213–1243 (2020). https://doi.org/10.1007/s12053-020-09878-0

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  • DOI: https://doi.org/10.1007/s12053-020-09878-0

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