An association of eight Central Eastern European transmission system operators which coordinates regional cooperation with regard especially to the mitigation of bottlenecks, CEE TSO was established in April 2007 as a loose association of TSOs with agreed rules of cooperation but without formal legal status. Its membership consists of the following TSOs:
In addition to operational safety and the coordination of network development, the association has focused its efforts from its very foundation on issues surrounding the coordinated allocation of transfer capacity on interconnectors within the CEE region and the potential introduction of new FBA (Flow-Based Allocation) allocation methodology.
CAO (Central Allocation Office GmbH), a common auction office for 8 CEE TSO members was established in July 2008 in Freising near Munich, Germany with the aim of coordinating transfer capacity allocation on interconnectors within the CEE region.