Judgment of the Court (Ninth Chamber) of 16 July 2020.#European Commission v Hungary.#Failure of a Member State to fulfil obligations – Internal markets in electricity and natural gas – Electricity and natural gas transmission networks – Conditions of access – Regulation (EC) No 714/2009 – Article 14(1) – Regulation (EC) No 715/2009 – Article 13(1) – Costs – Determination of network access charges – Directive 2009/72/EC – Article 37(17) – Directive 2009/73/EC – Article 41(17) – National causes of action – Principle of effective judicial protection.#Case C-771/18.