On 3 July 2025, we published the final amendments to the transmission pricing methodology guidelines and final data requirements following a rule change by the Australian Energy Market Commission in October 2024. 

These amendments set out the information we require to assess whether electricity transmission networks’ pricing methodologies are consistent with the requirements of the final rule. Our final decision largely retains the amendments from our draft decision, but takes into account the submissions we received and provides clarification in relation to specific aspects of the guidelines and additional data requirements. Our final amendments will guide transmission network service providers in implementing interconnector cost allocation agreements in their transmission pricing methodologies.

We have published both clean and marked-up versions of the pricing methodology guidelines and templates that set out the information we will collect annually on interconnector cost allocations.

For previous amendments to our transmission pricing methodology guidelines, please see the Pricing methodology guidelines 2022 webpage.