Case C-121/23 P: Judgment of the Court (Fifth Chamber) of 13 February 2025 – Swissgrid AG v European Commission (Appeal – Internal market for electricity – Guideline on electricity balancing – Regu...

Official Journal of the European Union C/2025/1862 7.4.2025 EN C series Judgment of the Court (Fifth Chamber) of 13 February 2025 – Swissgrid AG v European Commission (Case C-121/23 P) (1) (Appeal – Internal market for electricity – Guideline on electricity balancing – Regulation (EU) 2017/2195 – Article 1(6) and (7) – Transmission system operators (TSOs) – Participation in European platforms for the exchange of standard products for balancing energy – Article 263 TFEU – Action for annulment – Admissibility – Concept of ‘challengeable act’ – Letter from the European Commission refusing the participation of a TSO operating in Switzerland in European platforms) (C/2025/1862) Language of the case: English Parties Appellant: Swissgrid AG (represented by: P. De Baere, P. L’Ecluse, V. Lefever and K. T’Syen, avocats) Other party to the proceedings: European Commission (represented by: O. Beynet and B. De Meester, acting as Agents) Operative part of the judgment The Court: 1. Sets aside the order of the General Court of the European Union of 21 December 2022, Swissgrid v Commission ( T-127/21, EU:T:2022:868); 2. Refers the case back to the General Court of the European Union; 3. Reserves the costs. (1) OJ C 127, 11.4.2023. ELI: http://data.europa.eu/eli/C/2025/1862/oj 1/1