Judgment of the Court (Seventh Chamber) of 18 April 2024.#Omya CZ s. r. o. v Generální ředitelství cel.#Reference for a preliminary ruling – Taxation of energy products and electricity – Directive 2003/96/EC – Fifth indent of Article 2(4)(b) – Concept of ‘mineralogical processes’ – Electricity used to power machines used to process limestone extracted from quarries.#Case C-133/23.