The survey, which is meticulously conducted, has been considered by academic and business circles as a reliable reference since its inception. Today, the fact that many academic studies on companies in Turkey refer to Fortune 500 Turkey data is a major indicator of trust in the survey. Inclusion on Fortune Top 500 Turkey is recognized as a symbol of prestige. Fortune Top 500 Turkey Survey covering the industries of manufacturing, trade, services, construction and power has been drawn up jointly by Dun & Bradstreet (D&B), a world leader in areas of operation with a subsidiary in Turkey, Finar A.Ş. Releasing an annual list, Fortune Turkey ranked Çalık Enerji 56th in the list of year 2013.