On 17 October 2025, APA Group submitted to the AER an annual tariff variation notice for its Victorian gas transmission network (the Victorian Transmission System). The tariff variation notice relates to network charges for APA's users of this network for the period 1 January 2026 - 31 December 2026.

On 13 November 2025, APA Group submitted to the AER a revised annual tariff variation to provide updated data, and again on 9 December for minor amendments.