Case C-5/22, Green Network (Order for repayment of costs): Judgment of the Court (Fifth Chamber) of 30 March 2023 (request for a preliminary ruling from the Consiglio di Stato — Italy) — Green Network SpA v SF, YB, Autorità di Regolazione per Energia Reti e Ambiente (ARERA) (Reference for a preliminary ruling — Internal market in electricity — Directive 2009/72/EC — Article 37 — Annex I — Duties and powers of the national regulatory authority — Consumer protection — Administrative management costs — Power of the national regulatory authority to order the repayment of sums paid by final customers pursuant to contractual terms that have been penalised by that authority)