Powerlink has recently published a Project Assessment Conclusions Report (PACR) to address the secondary systems condition risks at Abermain Substation.
Located in south-east Queensland, Abermain Substation is a major injection point into the Energex distribution network. Planning studies have confirmed there is an enduring need for the substation to maintain the supply of electricity in the Ipswich, Lockrose, Gatton and south western parts of Brisbane.
Most secondary systems at the Abermain Substation are reaching the end of their technical service life, and are no longer supported by the manufacturer, with few spares available.
The first step of the Regulatory Investment Test for Transmission (RIT-T) was the publication of the Project Specification Consultation Report (PSCR) in September 2018 which invited submissions particularly on the credible options which could address the identified need.
The proposed preferred option identified in the PSCR considered to satisfy the RIT-T involves replacing all ageing and obsolete secondary systems using a modular prefabricated building with new secondary systems installed by June 2021. There were no submissions received in response to the PSCR which closed in December 2018. As a result, no additional credible options have been identified as part of this RIT-T consultation.
The outcomes of the economic analysis contained in the PACR remain unchanged from those published in the PSCR. Consequently, the draft recommendation to replace all ageing and obsolete secondary systems using a modular prefabricated building with new secondary systems installed by June 2021 has been adopted without change as the final recommendation in the PACR.
The estimated capital cost is $6.76 million in 2018/19 prices. Powerlink is the proponent of this project.
In the context of engagement activities with consumers and the general community, Powerlink has assessed this project as ‘minor’ on the RIT-T Stakeholder Engagement Matrix.
A copy of the Project Assessment Conclusions Report is available below.