Judgment of the Court (Sixth Chamber) of 21 December 2011 - A2A, formerly AEM v Commission (Case C-320/09 P) Appeal - State aid - Aid granted to public utilities - Tax exemptions - Decision declaring the aid scheme incompatible with the common market - Action for annulment - Admissibility - Locus standi - Legal interest in bringing proceedings - Article 87 EC - Concept of `aid' - Article 88 EC - Concept of `new aid' - Article 10 EC - Duty to cooperate in good faith - Regulation (EC) No 659/1999 - Articles 1 and 14 - Lawfulness of a recovery order - Principle of legal certainty - Duty to state reasons 1. Actions for annulment - Natural or legal persons - Measures of direct and individual concern to them - Commission decision prohibiting a sectoral aid scheme - Action brought by an undertaking having received individual aid granted under that scheme and that must be recovered - Admissibility (Art. 230, fourth para., EC) (see paras 55-60) 2. Actions for annulment - Legal interest in bringing proceedings - Condition - Action capable of procuring an advantage for the party bringing it - Commission decision on the recovery of State aid (see paras 68-70) 3. Appeals - Pleas in law - Inadequate statement of reasons - Reliance by the Court of First Instance on implied reasoning - Whether permissible - Conditions (Art. 225 EC; Statute of the Court of Justice, Arts 36 and 53, first para.) (see para. 97) 4. Appeals - Pleas in law - Mistaken assessment of the facts - Inadmissibility - Review by the Court of the assessment of the facts and evidence - Possible only where the clear sense of the evidence has been distorted (Art. 225 EC; Statute of the Court of Justice, Art. 58, first para.) (see paras 103-105) 5. Appeals - Pleas in law - Plea directed against a ground of the judgment not necessary in order to support the operative part -Plea in law ineffective (see para. 109) 6. Appeals - Pleas in law - Distortion of national law relied on as evidence - Admissibility (Art. 225 EC; Statute of the Court of Justice, Art. 51, first para.) (see para. 125) 7. Appeals - Pleas in law - Plea submitted for the first time in the context of the appeal - Inadmissibility (Rules of Procedure of the Court of Justice, Arts 42(2) and 118) (see para. 131) Re: Appeal brought against the judgment of the Court of First Instance (Eighth Chamber, Extended Composition) of 11 June 2009 in Case T-301/02 AEM v Commission by which that court dismissed the action brought for annulment of Articles 2 and 3 of Commission Decision 2003/193/EC of 5 June 2002 on State aid granted by Italy in the form of tax exemptions and subsidised loans to public utilities with a majority public capital holding (OJ 2003 L 77, p. 21). Operative part The Court: 1. Dismisses the main appeal and the cross-appeal; 2. Orders A2A SpA to pay the costs of the main appeal; 3. Orders the European Commission to pay the costs of the cross-appeal.