law://eu/cjeu/2023/c-205-23@2026-11-14Judgment of the Court (Third Chamber)30 January 2025note(Reference for a preliminary ruling — Energy — Internal market in natural gas — Directive 2009/73/EC — Article 3(1) — Obligations of Member States towards natural gas undertakings — Consumer protection — Articles 40 and 41 — Powers of the regulatory authority — Breach by a natural gas undertaking of its duty of transparency towards consumers — Duplication of penalties for the same unlawful conduct — Article 50 of the Charter of Fundamental Rights of the European Union — Right not to be tried or punished twice in criminal proceedings for the same criminal offence — Ne bis in idem — Article 52(1) — Limitations on the exercise of that fundamental right — Principle of proportionality)In Case C‑205/23,REQUEST for a preliminary ruling under Article 267 TFEU from the Tribunalul Bucureşti (Regional Court, Bucharest, Romania), made by decision of 24 February 2023, received at the Court on 28 March 2023, in the proceedingsEngie România SAvAutoritatea Naţională de Reglementare în Domeniul Energiei,THE COURT (Third Chamber),composed of K. Jürimäe, President of the Second Chamber, acting as President of the Third Chamber, K. Lenaerts, President of the Court, acting as Judge of the Third Chamber, N. Jääskinen, M. Gavalec and N. Piçarra (Rapporteur), Judges,Advocate General: A. Rantos,Registrar: R. Șereș, Administrator,having regard to the written procedure and further to the hearing on 24 April 2024,after considering the observations submitted on behalf of:– Engie România SA, by L. Chiurtu, N.-V. Dinu, R. Iancu, I. Katona and A. Radu, avocați,– the Autoritatea Naţională de Reglementare în Domeniul Energiei, by G.‑S. Niculescu, A.-M. Riling, C. Vernea and A. Zorzoană, acting as Agents,– the Romanian Government, by R. Antonie, E. Gane, R.I. Haţieganu and A. Rotăreanu, acting as Agents,– the Greek Government, by K. Boskovits and C. Kokkosi, acting as Agents,– the European Commission, by O. Beynet, L. Nicolae and T. Scharf, acting as Agents,after hearing the Opinion of the Advocate General at the sitting on 11 July 2024,gives the following
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