Case C-594/18 P: Judgment of the Court (Grand Chamber) of 22 September 2020 — Republic of Austria v European Commission and Others (Appeal — State aid — Article 107(3)(c) TFEU — Articles 11 and 194 TFEU — Article 1, Article 2(c) and Article 106a(3) of the Euratom Treaty — Planned aid for Hinkley Point C nuclear power station (United Kingdom) — Decision declaring the aid compatible with the internal market — Objective of common interest — Environmental objectives of the European Union — Principle of protection of the environment, ‘polluter pays’ principle, precautionary principle and principle of sustainability — Determination of the economic activity concerned — Market failure — Proportionality of the aid — Operating or investment aid — Determination of the aid elements — Guarantee Notice)