Judgment of the Court (First Chamber) of 11 April 2019.#Repsol Butano SA and DISA Gas SAU v Administración del Estado.#Requests for a preliminary ruling from the Tribunal Supremo.#Reference for a preliminary ruling — Energy — Liquefied petroleum gas (LPG) sector — Consumer protection — Requirement of general economic interest — Maximum price of a bottle of gas — Home delivery obligation — Article 106 TFEU — Directives 2003/55/EC, 2009/73/EC and 2006/123/EC — Interpretation of the judgment of 20 April 2010, Federutility and Others (C‑265/08, EU:C:2010:205) — Principle of proportionality.#Joined Cases C-473/17 and C-546/17.