Case C-369/24, MET Magyarország and Global NRG ROM: Judgment of the Court (Seventh Chamber) of 2 October 2025 (request for a preliminary ruling from the Fővárosi Törvényszék – Hungary) – MET Magyarország Energiakereskedő Zrt., Global NRG ROM SRL v Magyar Energetikai és Közmű-szabályozási Hivatal (Reference for a preliminary ruling – Internal market in natural gas – Regulation (EU) 2017/460 – Natural gas transmission system – Reference price methodology – Article 35(1) – Exemption for contracts concluded before 6 April 2017 which foresee no change in the levels of transmission tariffs except for indexation – Concept of indexation)