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The global issue in all sectors is to increase the efficiency. In heavy industry as in steel sector, there is also a question about the environment – the production of emissions. The European trading system with emissions of CO2 had been established in order to increase the efficiency in production with respect to emissions production. The unfair allocation of emissions allowances or generally the impact of the system has been discussed in many studies. This paper evaluates the efficiency of national steel sectors in 22 European countries. The calculations and analysis are made at national level. The Data Envelopment Analysis method is used. To perform the analysis, the data on inputs (number of allowances allocated for free, energy consumption) and outputs (amount of production and CO2 emissions) for year 2014 are used.
Keywords: Steel sector, Data Envelopment Analysis, efficiency© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.