Kostolac 'A' power station is operated by Elektroprivreda Srbije (EPS) and comprises two units built in 1967 and 1980 with a capacity of 100 Mw and 125 MW respectively. The locomotive is one of a number originally supplied by the United Nations Relief and Rehabilitation Administration to Yugoslavia after WW2. These locomotives worked on the line from the Klenovic opencast mine to the power station.