Judgment of the Court (Fifth Chamber) of 25 November 2021.#Aurubis AG v Bundesrepublik Deutschland.#Reference for a preliminary ruling – Scheme for greenhouse gas emission allowance trading – Scheme for the free allocation of allowances – Decision 2011/278/EU – Article 3(d) – Fuel benchmark sub-installation – Concepts of ‘combustion’ and ‘fuel’ – Primary copper production by flash smelting – Request for allocation – Allowances requested and not yet allocated on the date of expiry of a trading period – Possibility of issuing such allowances during the subsequent trading period by way of enforcement of a judicial decision given after that date.#Case C-271/20.