All potential solutions to replace network assets or help increase the capacity of Queensland’s high voltage transmission network that are over a certain threshold, (currently $7 million) must be tested using the Regulatory Investment Test for Transmission (RIT-T) developed by the Australian Energy Regulator to ensure the recommended solution will have maximum net economic benefits. Transmission network, distribution network or non-network alternatives (such as demand management or local generation) are considered as options for both reinvestment and augmentation needs.

For more information, please refer to our RIT-T information sheet.

The RIT-T applies to transmission augmentation investment consultations initiated from 1 August 2010 onwards and more recently, for network asset replacements, from 18 September 2017.

For details of our cost estimating process and asset risk cost methodology please refer to Powerlink’s Cost estimating methodology and Overview of Asset Risk Cost Methodology.

Looking for historical documentation? Submit your request to: [email protected].

Addressing the secondary system condition risks at Sumner

Southern region
Current

Maintaining reliability of supply to Mansfield

Southern region
Current

Addressing system strength requirements in Queensland from December 2025

State-wide region
Current

Managing voltages in South East Queensland

Southern region
Completed

RIT-T Consultation Process

Powerlink must undertake the Australian Energy Regulator’s (AER) Regulatory Investment Test for Transmission (RIT-T) when potential solutions to reinvest in network assets or increase the capacity of Queensland’s high voltage transmission network are over a $7 million threshold as defined in the National Electricity Rules.

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Frequently Asked Questions

Regulatory Investment Test for Transmission consultation, processes and registered industry participants and interested parties FAQs.
 

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RIT-T stakeholder engagement matrix

To enhance the value and outcomes of the Regulatory Investment Test for Transmission (RIT-T) engagement process, Powerlink has developed a stakeholder engagement matrix. 

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Transitional arrangements

The Regulatory Investment Test for Transmission (RIT-T) has been extended to apply to replacement expenditure planning from 18 September 2017.

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Emergencies

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