Court of Justice (First Chamber) 26 July 2017, C-80/16 (ArcelorMittal Atlantique et Lorraine SASU v Ministre de l’Écologie, du Développement durable et de lʼÉnergie.)

JUDGMENT OF THE COURT (First Chamber) 26 July 2017 ( 1 ) (Reference for a preliminary ruling — Environment — Directive 2003/87/EC — Article 10a(1) — EU greenhouse gas emission allowance trading scheme — Free allocation of allowances — Decision 2011/278/EU — Validity — Principle of sound administration — Determination of the product benchmark for hot metal — Use of data in the ‘BREF’ for iron and