1. Regulatory authorities shall closely consult and cooperate with each other, and shall provide each other and the Agency with any information necessary for the fulfilment of their tasks under this Directive. In respect of the information exchanged, the receiving authority shall ensure the same level of confidentiality as that required of the originating authority.
2. Regulatory authorities shall cooperate at least at a regional level to:
(a) foster the creation of operational arrangements in order to enable an optimal management of the network, promote joint gas exchanges and the allocation of cross-border capac? ity, and to enable an adequate level of interconnection capac? ity, including through new interconnections, within the region and between regions to allow for development of effective competition and improvement of security of supply without discriminating between supply undertakings in dif? ferent Member States;
(b) coordinate the development of all network codes for the rel? evant transmission system operators and other market actors; and
(c) coordinate the development of the rules governing the man?
agement of congestion.
3. National regulatory authorities shall have the right to enter into cooperative arrangements with each other to foster regula? tory cooperation.
4. The actions referred to in paragraph 2 shall be carried out, as appropriate, in close consultation with other relevant national authorities and without prejudice to their specific competencies.
5. The Commission may adopt Guidelines on the extent of the duties of the regulatory authorities to cooperate with each other and with the Agency. Those measures, designed to amend non- essential elements of this Directive by supplementing it, shall be adopted in accordance with the regulatory procedure with scru? tiny referred to in Article 51(3).
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