On 18 April 2023, APA Group submitted to the AER an annual tariff variation notice for its Northern Territory gas transmission network for the period 1 July 2023 to 30 June 2024.
On 28 April 2023, APA Group submitted a revised tariff variation notice in response to AER queries. This resubmission did not result in any changes to the proposed reference tariff.
On 8 May 2023, the AER approved APA Group's annual tariff variation notice for the period 1 July 2023 to 30 June 2024. This was after assessing the tariff variation as compliant with the AER's final decision on Amadeus' 2021–26 access arrangement.