Austria on Wednesday lost its challenge against a European Commission decision five years ago allowing Hungary to expand its Paks atomic plant as Europe's second-highest court rejected all its arguments.
The country, which shares a border with Hungary, is a supporter of environmentally sound energy and has for decades opposed nuclear power over concerns about cleanliness, safety, and renewability.
Austria sued the Commission in 2018 after the EU executive in 2017 approved Hungary's plan to build two new reactors at its Paks nuclear site, south of Budapest, with the help of Russia's Rosatom following Hungarian authorities' pledge to take several measures to ensure fair competition.