Judgment of the Court (First Chamber) of 12 October 2023.#Est Wind Power OÜ v AS Elering.#Reference for a preliminary ruling – Aid granted by Member States – Renewable energy subsidy – Construction of a wind farm – Communication from the Commission entitled ‘Guidelines on State aid for environmental protection and energy 2014-2020’ – Paragraph 19(44) and footnote 66 – Concepts of ‘start of works’, ‘construction works on the investment’, ‘other commitment that makes the investment irreversible’ and ‘necessary state authorisation for constructing the project’ – Type and intensity of the scrutiny that must be conducted by the competent national authority.#Case C-11/22.