Indicative dates for key milestones in the decision-making process
| Milestone | Date |
| Transgrid submits a compliant revenue proposal | 22 April 2026 |
| AER publish revenue proposal and open submissions | 24 April 2026 |
| Submissions on revenue proposal close | 18 May 2026 |
| AER publishes Preliminary position paper and open submissions | June/July 2026 |
| Public forum on the Preliminary position paper | July 2026 |
| Submissions close on the Preliminary position paper | July 2026 |
| AER makes final decision | by 21 October 2026 |
| AER publishes final decision | TBD |