KOC HOLDING revenue for the last year amounted to 1.22 T TRY, the most of which — 1.05 T TRY — came from its highest performing source at the moment, Energy, the year earlier bringing 713.73 B TRY. The greatest contribution to the revenue figure was made by Turkey — last year it brought KOC HOLDING 875.42 B TRY, and the year before that — 539.66 B TRY.