Request for a preliminary ruling from the Consiglio di Stato (Italy) lodged on 14 December 2017 — Unareti SpA v Ministero dello Sviluppo Economico and Others

(Case C-702/17)

(2018/C 112/20)

Language of the case: Italian

Referring court

Consiglio di Stato

Parties to the main proceedings

Appellants: Unareti SpA

Respondents: Ministero dello Sviluppo Economico, Presidenza del Consiglio dei Ministri — Dipartimento per gli Affari Regionali, Autorità Garante per l’Energia Elettrica il Gas e il Sistema Idrico — Sede di Milano, Presidenza del Consiglio dei Ministri — Conferenza Stato Regioni ed Unificata, Ministero per gli affari regionali, Dipartimento per gli affari regionali e le autonomie, Conferenza Unificata Stato Regioni e Enti Locali

Questions referred

In particular, the Court is asked to establish whether those principles and laws preclude national legislation, as described above, that provides for retrospective application of criteria for determining the amount of the reimbursements payable to former concession holders, thus affecting previous contractual relationships, or whether the application of those criteria can be justified, including in view of the proportionality principle, by the requirement of protecting other public interests of European importance, relating to the necessity of improving protection for competition within the market in question and of giving greater protection to service users, who could indirectly bear the cost of an increase in the sums payable to former concession holders.