The basis for the establishment of ACER is Regulation 713/2009 of the European Parliament and the Council of 13 July 2009. The regulation describes the establishment and the legal status, tasks, organisation, and financial provisions.[3] It was reestablished in 2019 by directive (EU) 2019/942[4]
complements and coordinates the work of national regulatory authorities,
participates in the creation of European network rules,
takes, under certain conditions, binding individual decisions on terms and conditions for access and operational security for cross border infrastructure,
gives advice on various energy-related issues to the European institutions, and