Neighbour system operators

JP EMS - Serbian Transmission System(EMS), Serbia and Montenegro
http://www.ems.co.yu

TEIAS, Turkey
http://www.teias.gov.tr/

Hellenic Transmission System Operator(HTSO/DESMIE), Greece
http://www.desmie.gr

Transelectrica S.A., Romania
http://portal.transelectrica.ro

AD MEPSO, Macedonia
http://www.mepso.com.mk

UCTE
http://www.ucte.org

ETSO

European Transmission System Operators(ETSO)
http://www.etso-net.org/