In line with our final decision on AusNet Services' electricity transmission network, we have updated AusNet Services' return on debt for 2023–24. As a result of this update, the return on debt for 2023–24 is 4.28 per cent. This results in an X-factor for 2023-24 of 1.88 per cent. Holding other things constant, a positive X-factor implies a real revenue decrease and a negative X-factor implies a real revenue increase. The revised PTRM shows the updated X-factor.

In line with our final decision on AusNet Services' electricity transmission network, we have updated AusNet Services' return on debt for 2024-25. As a result of this update, the return on debt for 2024-25 is 4.52 per cent. This results in an X-factor for 2024-25 of 1.39 per cent. Holding other things constant, a positive X-factor implies a real revenue decrease and a negative X-factor implies a real revenue increase. The revised PTRM shows the updated X-factor.

In line with our final decision on AusNet Services' electricity transmission network, we have updated AusNet Services' return on debt for 2025–26. As a result of this update, the return on debt for 2025–26 is 4.52 per cent. This results in an X-factor for 2025–26 of 0.51 per cent. Holding other things constant, a positive X-factor implies a real revenue decrease and a negative X-factor implies a real revenue increase. The revised PTRM shows the updated X-factor.

On 9 September 2025, the AER released its decision on a positive cost pass through application received from AusNet Services. This cost pass through application related to the recovery of costs incurred as a result of the collapse of transmission towers on the Moorabool to Sydenham 500kV transmission lines near Anakie during a storm which occurred on 13 February 2024.