Judgment of the General Court (Second Chamber) of 26 July 2023.#Arctic Paper Grycksbo AB v European Commission.#Environment – Directive 2003/87/EC – Scheme for greenhouse gas emission allowance trading – National implementing measures – Transitional free allocation of greenhouse gas emission allowances – Decision to exclude an installation exclusively using biomass – Duty of diligence – Right to be heard – Obligation to state reasons – Manifest error of assessment – Equal treatment – Legitimate expectations – Plea of illegality – Paragraph 1 of Annex I to Directive 2003/87.#Case T-269/21.