54It follows that independence in decision-making, within the meaning of Article 35(4)(b)(ii)and (5)(a) of that directive, means that, within the framework of the regulatory duties and powers referred to in Article 37 of that directive, the national regulatory authority is to adopt autonomous decisions, on the sole basis of the public interest, to ensure compliance with the objectives pursued by that directive, without being subject to external instructions from other public or private bodies.