Judgment of the Court (Tenth Chamber) of 3 December 2020.#European Commission v Kingdom of Belgium.#Failure of a Member State to fulfil obligations – Directives 2009/72/EC and 2009/73/EC – Internal market in electricity and natural gas – Effective separation between the operation of electricity and gas transmission networks, on the one hand, and supply and generation activities, on the other hand – Establishment of independent national regulatory authorities.#Case C-767/19.