%0 Journal Article %T Measurement of Corporate Sustainability Performance in Energy Sector by Entropy Based TOPSIS Method: Akenerji Case %A Ahmet £¿ZTEL %A Bahad£¿r AYDIN %A M. Said K£¿SE %J - %D 2018 %X In our developing and constantly changing world; with rapid population growth and increasing production volumes of firms, the continuity of growth and success has become a major problem. The concept of corporate sustainability is at the center of efforts to solve the problem. Corporate sustainability is considered as a three-legged, economic, social and environmental aspects. Measuring corporate sustainability performance makes the concept of sustainability functional.Multi-Criteria Decision Making (MCDM) methods provide a useful framework for evaluating the key elements of corporate sustainability together. In this study, it is aimed to evaluate the corporate sustainability performance of Akenerji company by using TOPSIS method, which is one of MCDM methods, together with Entropy weighting. In the methods, since all the evaluations are obtained from the decision matrix, no subjective judgment is given place to. The application data was obtained from the annual sustainability reports of Akenerji. The corporate sustainability performance of the company under review has been compared with the economic, social and environmental dimensions over the years. As a result of the analysis, it has been found that there is a discrepancy between economic, environmental and social sustainability performances. It has been found that environmental and social achievement is low in the years when the economic success is high %K Kurumsal S¨¹rd¨¹r¨¹lebilirlik Performans£¿ %K TOPSIS %K Entropi %K Enerji Sekt£¿r¨¹ %U http://dergipark.org.tr/gumussosbil/issue/40078/374945