ElectraNet - Eyre Peninsula Electricity Supply Options regulatory investment test - transmission (RIT-T)

Commencement date: 
23 November 2018
AER General inquiries AERInquiry@aer.gov.au
AER reference: 


On 23 November 2018, ElectraNet submitted a request to the AER seeking a determination that the preferred option identified in the Eyre Peninsula Electricity Supply Options Regulatory Investment Test for Transmission (RIT-T) satisfies the requirements of the RIT-T.

The existing single-circuit 132 kV line serving the Eyre Peninsula has been in service since 1967 and several sections now require major replacement works. ElectraNet's Eyre Peninsula Electricity Supply Options RIT-T has explored options for providing a reliable supply to the Eyre Peninsula most efficiently into the future. ElectraNet released its Project Assessment Conclusions Report (the final step in the RIT-T process) on 18 October 2018, which identified the following preferred option: 

  • a new double-circuit line from Cultana to Yadnarie, initially energised at 132 kV but with the option to be energised at 275 kV if required in the future; and
  • a new 132 kV double-circuit line from Yadnarie to Port Lincoln.

The purpose of the RIT-T is to identify the credible option that maximises the present value of net economic benefit to all those who produce, consume and transport electricity in the market. The AER will assess ElectraNet's application of the RIT-T and make a determination as to whether the preferred option identified by ElectraNet satisfies the RIT-T, in accordance with the requirements of the National Electricity Rules.

Subject to our determination, ElectraNet may subsequently submit to the AER a contingent project application to amend its 2018-23 revenue determination to account for the costs of the project.