62023CJ0281_SUM
Joined Cases C‑281/23 P and C‑282/23 P
Polskie sieci elektroenergetyczne S.A. and Others
v
European Union Agency for the Cooperation of Energy Regulators (ACER)
Judgment of the Court (Second Chamber) of 23 October 2025
(Appeal – Internal market for electricity – Regulation (EU) 2019/942 – Board of Appeal of the European Union Agency for the Cooperation of Energy Regulators (ACER) – Regulation (EU) 2017/2195 – Articles 20, 21 and 37 – Balancing electricity – Transmission system operators – Establishment of European platforms for the exchange of balancing energy – European platform for the exchange of balancing energy from frequency restoration reserves with manual activation (mFRR platform) – European platform for the exchange of balancing energy from frequency restoration reserves with automatic activation (aFRR platform) – Development and approval of the implementation frameworks for those platforms – Functions required to operate those platforms – Cross-zonal capacity for the exchange of balancing energy – ACER decision rejecting the common proposal of the system operators)
Appeal – Grounds – Mere repetition of the pleas and arguments put forward before the General Court – Inadmissibility – Challenge to the interpretation or application of EU law made by the General Court – Admissibility
(Art. 256 TFEU; Statute of the Court of Justice, Art. 58, first para.; Rules of Procedure of the Court of Justice, Arts 168(1)(d) and 169(2))
(see paragraphs 44-49)
EU agencies – Agency for the Cooperation of Energy Regulators (ACER) – Appeals procedure – Appeal before the Board of Appeal of ACER – Appeal against a decision of ACER adopting a methodology for the implementation of a European platform for the exchange of balancing energy – Scope of the review – Assessment of complex technical and economic facts – Review of legality not limited to the assessment of manifest errors of assessment
(European Parliament and Council Regulation No 713/2009, Arts 18 and 19)
(see paragraphs 53-60)
Energy – Electricity balancing – Regulation 2017/2195 – European platform for the exchange of balancing energy from frequency restoration reserves with manual activation – Functions required for the operation of the platform – Concept – Capacity management – Included
(Commission Regulation 2017/2195, Arts 3(1)(c) and (2)(c), 20(2) and (3)(a), (c) and (e), and 21(2) and (3)(c))
(see paragraphs 67-77)
See the text of the decision.