Judgment of the Court (Seventh Chamber) of 17 September 2020.#Burgo Group SpA v Gestore dei Servizi Energetici SpA - GSE.#Request for a preliminary ruling from the Consiglio di Stato.#Reference for a preliminary ruling – Environment – Promotion of cogeneration – Provision of national law establishing a support scheme – Scheme supporting non-high-efficiency cogeneration plants extended beyond 31 December 2010.#Case C-92/19.