Court of Justice 21 March 2013, C‑630/11 P to C‑633/11 P (HGA Srl and Others (C‑630/11 P), Regione autonoma della Sardegna (C‑631/11 P), Timsas srl (C‑632/11 P) and Grand Hotel Abi d’Oru SpA (C‑633/11 P) v European Commission.)

Opinion of the Advocate-General Opinion of the Advocate-General 1. The present cases should lead the Court to determine whether, for the purpose of considering whether regional State aid is compatible with the internal market, the requirement for an application for aid to be submitted before work begins is an essential requirement for proof of the incentive effect and therefore of the necessity