In its judgment of 22 September 2020 in Case C-594/18 P Austria v Commission (the Hinkley Point judgment), the Court of Justice addressed a number of issues pertaining to the applicability of the EU State aid and environmental rules to the nuclear energy projects under the Euratom Treaty. Although it is not strictly speaking revolutionary for the State aid regime, the Hinkley Point judgment significantly contributes to the wider development of Union law. First, it brings further clarity regarding the links between the Euratom Treaty and the other Treaties on which the Union is founded. Secondly, it addresses a long-standing issue of relationship between the environmental protection and the objective of safeguarding trade and competition within the internal market, even though without bringing a clear-cut definitive answer to all related questions.