The Service Users of Coordinated Auction Office in South East Europe:

Croatia HOPS Hrvatski operator prijenosnog sustava d.o.o.
Bosnia and
Herzegovina
NOS-BiH Nezavisni operator sistema u Bosni i Hercegovini
Montenegro CGES Crnogorski elektroprenosni sistem AD
Albania OST Operatori i Sistemit te Transmetimit
Greece IPTO Independent Power Transmission Operator S.A.
Turkey TEIAS TÜRKIYE ELEKTRIK ILETIM A.S
North Macedonia MEPSO Оператор на електропреносниот систем на Република Северна Македонија
Italy TERNA TERNA S.p.A. - Rete Elettrica Nazionale