Order of the Court (Tenth Chamber) of 1 March 2022.#Milis Energy SpA and Others v Presidenza del Consiglio dei Ministri and Others.#Requests for a preliminary ruling from the Tribunale Amministrativo Regionale per il Lazio.#References for a preliminary ruling – Article 99 of the Rules of Procedure of the Court of Justice – Environment – Charter of Fundamental Rights of the European Union – Articles 16 and 17 – Principles of legal certainty and protection of legitimate expectations – Energy Charter Treaty – Article 10 – Applicability – Directive 2009/28/EC – Article 3(3)(a) – Promotion of the use of energy from renewable sources – Production of electricity from solar photovoltaic installations – Amendment of an aid scheme.#Joined Cases C-306/19, C-512/19, C-595/19 and C-608/20 to C-610/20.