InfrastructureOrganisation for Economic Co-operation and Development (OECD)Ex ante / Ex postEssential facilityThird energy packageGeneral economic interestSecurity of supplyUnbundlingNational operatorOwnershipRegulatory frameworkStructural regulationMember StateEuropean directivesVertical concentrationActivities separationFunctional unbundlingCorporate unbundlingOperational unblundlingVertical integrationNetworkEnergy marketMonopolyState monopolyLibéralisationObjectifMarché intérieurAutorité de la concurrenceCompétitionDistribution