Article 78 4

4.   Where the infrastructure concerned is located in the territory of more than one Member State, ACER may submit an advisory opinion to the regulatory authorities of the Member States concerned within two months of the date on which the request for exemption was received by the last of those regulatory authorities. Such an advisory opinion may be used as a basis for the decision of the regulatory authorities.

Where all the regulatory authorities concerned agree on the request for exemption within six months of the date on which it was received by the last of the regulatory authorities, they shall inform ACER of their decision. Where the infrastructure concerned is a transmission line between a Member State and a third country, the regulatory authority, or, where appropriate, another competent authority of the Member State where the first interconnection point with the Member States’ network is located, may consult before the adoption of the decision on the exemption the relevant authority of that third country with a view to ensuring, as regards the infrastructure concerned, that this Regulation is applied consistently in the territory and, where applicable, in the territorial sea of that Member State. Where the third-country authority consulted does not respond to the consultation within a reasonable period or by a set deadline not exceeding three months, the regulatory authority concerned may adopt the necessary decision.

ACER shall exercise, in accordance with Article 10 of Regulation (EU) 2019/942, the tasks conferred on the regulatory authorities of the Member States pursuant to this Article:

All regulatory authorities concerned may, jointly, request that the period referred to in the third subparagraph, point (a), is extended by up to three months.