Case C-176/06 P: Judgment of the Court (Second Chamber) of 29 November 2007 — Stadtwerke Schwäbisch Hall GmbH, Stadtwerke Tübingen GmbH, Stadtwerke Uelzen GmbH v Commission of the European Communities, E.ON Kernkraft GmBH, RWE Power AG, EnBW Energie Baden-Württemberg AG, Vattenfall Europe Nuclear Energy GmbH, formerly Hamburgische Electricitäts-Werke AG (Appeal — Aid allegedly granted by the German authorities to nuclear power stations — Provisions for closure of power stations and disposal of radioactive waste — Inadmissibility of the action before the Court of First Instance — Absolute bar)