Case C-682/17: Judgment of the Court (Fifth Chamber) of 20 June 2019 (request for a preliminary ruling from the Verwaltungsgericht Berlin — Germany) — ExxonMobil Production Deutschland GmbH v Bundesrepublik Deutschland (Reference for a preliminary ruling — Environment — Directive 2003/87/EC — Scheme for greenhouse gas emission allowance trading — Natural gas processing installation — Sulphur recovery — ‘Claus process’ — Production of electricity in a secondary facility — Production of heat — Emission of inherent carbon dioxide (CO2) — Article 2(1) — Scope — Annex I — Activity of ‘combustion of fuels’ — Article 3(u) — Concept of ‘electricity generator’ — Article 10a(3) and (4) — Transitional arrangements for the harmonised free allocation of emission allowances — Decision 2011/278/EU — Scope — Article 3(c) — Concept of ‘heat benchmark sub-installation’)