48First, Article 194(1)(a) and (b) TFEU provides that, in the context of the establishment and functioning of the internal market, Union policy on energy aims to ensure the functioning of the energy market and security of energy supply in the Union. The Court has already observed that Article 194(1)(b) TFEU identifies security of energy supply in the European Union as one of the fundamental objectives of EU policy in the field of energy (see judgment of 29 July 2019, Inter-Environnement Wallonie and Bond Beter Leefmilieu Vlaanderen, C‑411/17, EU:C:2019:622, paragraph 156). Second, the second subparagraph of Article 194(2) TFEU provides that the measures adopted by the European Parliament and the Council are not to affect a Member State’s right to determine the conditions for exploiting its energy resources, its choice between different energy sources and the general structure of its energy supply, and does not preclude that choice from being nuclear energy.
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