Since April 2014, Polish operator Orlen Koltrans is using the Pesa Gama Marathon locomotive for its trains. Previously, the new type of locomotive was also evaluated in revenue service by Lotos Kolej, PKP IC, and Pol-Miedź Trans. AN image fo the locomotive with Orlen Koltrans logos made in Inowroclaw Towarowy on 22.06.2014. - MF