Key project activity - dating from 2006 - can be found in the Project Chronology section of this page.
Please note that to best serve the need, the project has evolved as a result of co-operation between TransGrid, ACT Government agencies and ActewAGL to optimise the layout, route and staging of the transmission infrastructure. This has included evolving from establishment of a switching station to establishment of a substation by including a new transformer that was previously planned as a replacement at the existing Canberra substation to optimise network performance.
The main driver of this project evolution was the ACT Electricity Transmission Supply Code 2016, issued in July 2016. Other factors that informed the evolution of project need were:
A number of options have been considered for the arrangement of a new switching/substation and associated transmission lines. These were subject to a multi–criteria assessment considering many factors including:
Through a rigorous site selection process and collaborative working group with the ACT Government agencies, a site for a new switching/substation at Stockdill Drive was identified, and approved by ACT Government in March 2015. It was identified as the site that best minimises impacts associated with the above factors.
The project involves construction of a:
To date, various activities have been undertaken to develop the project. A chronology of these activities is outlined in the Stockdill Drive Chronology document. Individual items mentioned in the document can be viewed below.
Item 1 - Disallowable Instrument DI2006-47 Rot.pdf
Item 2 - TAPR reference.pdf
Item 3 - Regulatory Test Application Notice.pdf
Item 4 - Disallowable Instrument DI2009-144 Rot.pdf
Item 5 - Regulatory Test Final Report.pdf
Item 6 - GHD options assessment report.pdf
Item 7 - Riverview Group's report on options.pdf
Item 10 - Letter to Minister advising of status.pdf
Item 12 - Disallowable Instrument DI2012-267 Rot.pdf
Item 13 - Letter to Minister for the Environment and Sustainable Development.pdf
Item 14 - TransGrid Electricity Transmission Licence in ACT.pdf
Item 15 - Letter from ACT Director-General Economic Development.pdf
Item 17 - Disallowable Instrument DI2016-189 including Electricity Transmission Supply Code.pdf
Item 19 - 2016-7784-Referral-Decision.pdf
The project is needed to:
Project evolution from switching station to substation will strengthen supply into the ACT, via the ActewAGL 132kV network.
Scheduled key project dates:
Stakeholder Update Letter - ACT Second Supply Project - February 2017 - ACT Government