Albania Energy Efficiency Centre KESH - Albania Power Corporation OST Austria E-control EXAA - Energy Exchange Austria Austrian Power Grid Verbund VUEN Belgium CREG – national commission for electricity and gas regulation CWAPE - Walloon regulator IBGE-BIM - Brussels regulator VREG - Flemish regulator Belpex Elia Bosnia & Herzegovina NOSBIH ERS EPBIH EPHZHB Bulgaria ESO Kozloduy Nuclear Power Plant Mini Maritsa Iztok SERC - Energy Regulatory Commission NEK - National Electric Company Croatia HERA HEP HOPS Cyprus EAC - Electricity Authority of Cyprus TSOC Czech Republic CEPS - Network Operator CEZ / Skupina CEZ E.ON Czech Republic ERO - Energy Regulator OTE - Market Operator PRE - Pražská energetika SEVEn - Energy Efficiency Centre