Judgment of the General Court (Second Chamber, Extended Composition) of 7 September 2022.#Bundesnetzagentur für Elektrizität, Gas, Telekommunikation, Post und Eisenbahnen (BNetzA) v European Union Agency for the Cooperation of Energy Regulators.#Energy – Internal market in electricity – Regulation (EU) 2019/942 – Decision of the Board of Appeal of ACER – Action for annulment – Act not open to challenge – Inadmissibility – Competence of ACER – Article 8 of Regulation (EC) No 713/2009 – Article 6(10) of Regulation 2019/942 – Article 9(12) of Regulation (EU) 2015/1222 – Applicable law