"NORDEL" . . "EU grid" . . "ENTSO-E" . "ENTSO-E promotes closer cooperation across Europe\u2019s TSOs to support the implementation of EU energy policy and achieve Europe\u2019s energy & climate policy objectives, which are changing the very nature of the power system" . . "Transmission system operators" . . . . . "Nordel" . "European power grid" . . "2008-12-19" . . . "ENTSO-E" . . "ENTSO-E Transmission System Operators" . . "European Network of Transmission System Operators" . "European Network of Transmission System Operators for Electricity" . . "European Network of Transmission System Operators for Electricity" . . "AISBL" .