1. The action is dismissed as inadmissible.
2. The applicants are ordered to bear their own costs and jointly and severally the costs incurred by the Commission and by the interveners Österreichische Elektrizitätswirtschafts-AG, EVN AG, Wien Energie GmbH, Energie AG Oberösterreich, Burgenländische Elektrizitätswirtschafts-AG and Linz AG für Energie, Telekommunikation, Verkehr und Kommunale Dienste.
3. The intervener Ampere AG is ordered to bear its own costs.
