Judgment of the General Court (Second Chamber) of 15 February 2023.#Aquind Ltd and Others v European Union Agency for the Cooperation of Energy Regulators.#Energy – Competence of ACER – Withdrawal of the United Kingdom from the European Union – Error of law – Article 2(1) of Regulation (EU) 2019/943 – Article 92 of the Withdrawal Agreement – Ad hoc exemption regime under Article 308 of and Annex 28 to the Trade and Cooperation Agreement.#Case T-492/21.