Cimen S.,Ministry of Energy and Natural Resources MENR
International Journal of Oil, Gas and Coal Technology | Year: 2015
Intense competition in today's globalised system requires the countries' resources to be produced and utilised in the most economic manner, which is only possible through efficient introduction of these resources by the business units. In this study, the efficiencies of the eight establishments of the Turkish coal enterprises (TKI) are analysed between the years 2006 and 2009 by using data envelopment analysis (DEA) and super efficiency (SE) methodologies. For the analyses, two output oriented models are constructed and used, namely production efficiency and revenue efficiency models. As part of the analyses, first the production and revenue efficiencies of the establishments were analysed using constant return to scale (CRS) and variable return to scale (VRS) methodologies of DEA. Next, the efficiency rankings of the efficient establishments were determined among themselves by using SE methodology. Finally, the calculated efficiencies are assessed and recommendations are provided for each TKI establishment. Copyright © 2015 Inderscience Enterprises Ltd.