Case C-331/21, EDP — Energias de Portugal and Others: Judgment of the Court (Third Chamber) of 26 October 2023 (request for a preliminary ruling from the Tribunal da Relação de Lisboa — Portugal) — EDP — Energias de Portugal SA, EDP Comercial — Comercialização de Energia SA, MC retail SGPS SA, formerly Sonae MC SGPS SA, Modelo Continente Hipermercados SA v Autoridade da Concorrência (Reference for a preliminary ruling — Article 101 TFEU — Agreements, decisions and concerted practices — Prohibition of agreements, decisions and concerted practices — Agreements between undertakings — Distinction between a vertical and a horizontal agreement — Potential competition — Restriction of competition by object or by effect — Agreement between a supplier of electricity and a retailer of consumer products operating hypermarkets and supermarkets — Non-compete clause — Regulation (EU) No 330/2010 — Agency contract — Liberalisation of the market for the supply of electricity)