This instrument amends statutory instrument, Electricity Network Codes and Guidelines (System Operation and Connection) (Amendment etc.) (EU Exit) Regulations 2019 (S.I. 2019/533) and will help ensure that legislation governing the UK’s energy systems will function effectively in the event that the UK leaves the European Union (‘EU’) without a withdrawal agreement in place on 31 October 2019. It ensures that three Commission Regulations for electricity connection codes become retained EU law. These codes did not apply in full before an exit date of 29 March 2019 but they will now apply in full before exit as a result of the Article 50 extension to 31 October 2019.