Article 107(3)(c) TFEU requires a delicate balancing of the positive effects of the aid aiming the development of certain economic activities and the negative effects thereof. The Paks II judgment provides clarifications as to the limits of this balancing process and the European Commission’s obligations to take into account primary and secondary EU laws other than those related to State aid, as well as fundamental goals of the EU Treaties like the protection of environment. The Paks II judgment also confirms that State aid rules are also applicable concerning activities falling under the EURATOM Treaty and clarifies the relationship between State aid and public procurement and an infringement procedure and a State aid procedure. The Paks II judgment also shows that Member States have a hard time with challenging the Commission’s State aid decisions if they rely on an alleged err in law or they attack the Commission’s discretionary powers and the proper application thereof.