On 18 October 2018, APA VTS submitted to the AER its annual tariff variation proposal for the period 1 January to 31 December 2019. However, this was a placeholder tariff variation proposal as the final consumer price index and winter demand inputs were not available. APA VTS subsequently provided its revised tariff model in December 2018.
On 13 December 2018, the AER approved APA VTS' revised annual tariff variation proposal for the period 1 January to 31 December 2019. This was after assessing the revised tariff variation proposal dated 7 December 2018 as compliant with the AER's Final Decision on APA VTS’ 2018-22 Access Arrangement.