Judgment of the General Court (Seventh Chamber) of 24 October 2019.#Energie-Control Austria für die Regulierung der Elektrizitäts- und Erdgaswirtschaft (E-Control) v European Union Agency for the Cooperation of Energy Regulators.#Energy — Decision of the Board of Appeal of ACER — Determination of the capacity calculation regions — Action for annulment — Interest in bringing proceedings — Inadmissible in part — Regulation (EU) 2015/1222 — ACER’s competence.#Case T-332/17.