Judgment of the General Court (Sixth Chamber) of 13 February 2012 -- Budapesti Ero"mu" v Commission (Joined Cases T-80/06 and T-182/09) State aid -- Wholesale electricity market -- Favourable terms granted by a Hungarian public undertaking to certain power generators under power purchase agreements -- Decision to initiate the procedure laid down in Article 88(2) EC -- Decision declaring the aid incompatible with the common market and ordering its recovery -- New aid -- Private investor test 1. Actions for annulment -- Actionable measures -- Measures producing legal effects -- Commission decision to open a formal investigation procedure into a State measure in the course of implementation and to classify it provisionally as new aid -- Admissibility (Arts 87(1) EC, 88(2) and (3) EC and 230 EC) (see paras 37-39, 41) 2. State aid -- Existing aid and new aid -- Accession of a new Member State to the European Union -- Distinction by reference to the specific rules established in Annex IV of the Act of Accession -- Possibility of classifying as new aid a measure not initially constituting State aid -- Advantageous conditions granted to certain Hungarian electricity producers -- Classification as new aid (Arts 87(1) EC and 88(1) and (3) EC; Act of Accession of 2003, Annex IV; Council Regulation No 659/1999, Art. 1) (see paras 50, 51, 54-56, 59) 3. State aid -- Concept -- Assessment according to the private investor test -- Purchasing agreements for electricity guaranteeing to electricity producers a minimum purchase quantity and the remuneration of fixed costs and capital -- Included (Art. 87(1) EC) (see paras 65, 66, 69, 71, 77-79, 82) 4. State aid -- Effect on trade between Member States -- Adverse effect on competition -- Criteria for assessment -- Liberalised sector (Art. 87(1) EC) (see paras 95-97) 5. State aid -- Commission decision finding aid incompatible with the common market and ordering its recovery -- Possible for the Commission to leave to national authorities the task of calculating the exact amount to be recovered -- Indication of a repayment methodology in the final decision -- State aid in the electricity market (Art. 88 EC; Council Regulation No 659/1999, Art. 14(1)) (see paras 106-110, 113-115) 6. State aid -- Examination by the Commission -- Purchasing agreements for electricity guaranteeing to electricity producers a minimum purchase quantity and the remuneration of fixed costs and capital -- Adoption of a single decision for all the purchasing agreements after examining the similarities of all the agreements and their specific elements -- Lawfulness (Art. 87(1) EC) (see paras 129-131) 7. Actions for annulment -- Grounds -- Misuse of powers -- Meaning (Art. 230 EC) (see para. 140) 8. State aid -- Commission decision to open a formal investigation procedure in respect of aid -- Duty to state reasons -- Scope (Arts 88(2) and (3) EC and 253 EC; Council Regulation No 659/1999, Art. 6) (see para. 143) Re: APPLICATION, in Case T-80/06, for annulment of the Commission's decision, notified to Hungary by letter of 9 November 2005, to initiate the procedure laid down in Article 88(2) EC in relation to State aid C 41/2005 (ex NN 49/2005) -- Hungarian Stranded Costs, and, in Case T-182/09, for annulment of Commission Decision 2009/609/EC of 4 June 2008 on the State aid C 41/05 awarded by Hungary through Power Purchase Agreements (OJ 2009 L 225, p. 53). Operative part The Court: 1. Dismisses the actions; 2. Orders Budapesti Ero"mu" Zrt to pay the costs.