1.   By 24 June 2024, the Commission shall, with the involvement of the Member States, relevant TSOs, the Agency and the national regulatory authorities, develop guidance for a specific cost-benefit and cost-sharing for the deployment of the sea-basin integrated offshore network development plans referred to in Article 14(2) in accordance with the non-binding agreements referred to in Article 14(1). This guidance shall be compatible with Article 16(1). The Commission shall update its guidance when appropriate, taking into account the results of its implementation.

2.   By 24 June 2025, the ENTSO for Electricity, with the involvement of the relevant TSOs, the Agency, the national regulatory authorities and the Commission, shall present the results of the application of the cost-benefit and cost-sharing to the priority offshore grid corridors.

1.   The efficiently incurred investment costs, which exclude maintenance costs, related to a project of common interest falling under the energy infrastructure categories set out in point (1)(a), (b), (c), (d) and (f) of Annex II, and projects of common interest falling under the energy infrastructure category set out in point (3) of Annex II, where they fall under the competence of national regulatory authorities in each Member State concerned, shall be borne by the relevant TSO or the project promoters of the transmission infrastructure of the Member States to which the project provides a net positive impact, and, to the extent not covered by congestion rents or other charges, be paid for by network users through tariffs for network access in that or those Member States.

2.   The provisions of this Article shall apply to a project of common interest falling under the energy infrastructure categories set out in point (1)(a), (b), (c), (d), (f) and point (3) of Annex II, where at least one project promoter requests the relevant national authorities their application for the costs of the project.

Projects falling under the energy infrastructure category set out in point (1)(e) and point (2) of Annex II may benefit from the provisions of this Article where at least one project promoter requests its application from the relevant national authorities.

Where a project has several project promoters, the relevant national regulatory authorities shall without delay request all project promoters to submit the investment request jointly in accordance with paragraph 4.

3.   For a project of common interest to which paragraph 1 applies, the project promoters shall keep all relevant national regulatory authorities regularly informed, at least once per year, and until the project is commissioned, of the progress of that project and the identification of costs and the impact associated with it.