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 $6 million) must be tested using the Regulatory Investment Test for Transmission (RIT-T) developed by the Australian Energy Regulator (AER) 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.

The Regulatory Investment Test for Transmission (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. Read more about the RIT-T consultation process.