Proposed New Large Transmission Network Asset Sydney CBD and Inner Metropolitan Area
The Sydney CBD and inner metropolitan area is supplied via a network of 330kV and 132kV lines and cables from 330/132kV substations at Sydney North (Dural), Sydney South (Picnic Point), Beaconsfield West and Haymarket. Beaconsfield West and Haymarket substations are supplied via 330 kV cables from Sydney South.
TransGrid and EnergyAustralia are proposing the construction of a new large transmission network asset to increase the capacity of the transmission network supplying the area. The proposal has major components as follows:
- Construction of sections of new double circuit 330kV line and conversion of parts of an existing double circuit line to operate at 330kV between Sydney West 330/132kV substation and the Holroyd area
- Construction of a new 330/132kV substation in the Holroyd area
- Installation of two 330kV cables between the new Holroyd substation and the Potts Hill area
- Construction of a new 330/132kV substation in the Potts Hill area (Rookwood Road, Potts Hill)
The works are estimated to cost approximately $557 million and are proposed to be completed for summer 2013/14.
| Final Report - Development of Electricity Supply to the Sydney CBD and Inner Metro Area |
March 2010 |
 PDF |
Proposed New Large Transmission Network Asset Development of Electricity Supply to the Nowra Area
The NSW South Coast area includes the local government areas of Shellharbour, Shoalhaven and Kiama in the Illawarra Local Planning Area. They have a total population of around 214,000. The electrical load is characterised primarily by residential loads with some commercial and light industrial loads in the major population centres, rural loads in surrounding areas and holiday loads.
TransGrid and Integral Energy are proposing the construction of a new large transmission network asset to increase the capacity of the transmission network supplying the area and have published an application notice.
The proposal has major components as follows:
- Construction of a new 330/132 kV Substation;
- Construction of a short section of double circuit 330 kV transmission line from the new substation to TransGrid’s Kangaroo Valley to Capital Wind Farm line west of the substation;
- Construction of short sections of 132 kV transmission line from the new substation to Integral Energy’s 132kV lines to the east;
- Connections to enable the new 330kV and 132kV circuits to be formed;
- The necessary control, protection and communications services.
The TransGrid component of these works is estimated to cost around $45.6 million. The Integral energy component of these works is estimated to cost around $25.6 million.
A copy of the application notice can be downloaded from below or from Integral Energy’s website www.integral.com.au
TransGrid and Integral Energy invite submissions on the application notice from interested parties. The closing date for submissions is 20th April 2010.
Submissions or other enquiries should be directed by email to regulatory.consultation@transgrid.com.au or
matthew.webb@integral.com.au
| Application Notice - Supply to the Nowra Area |
March 2010 |
PDF |
Sydney CBD and Inner Metropolitan Area
The Sydney CBD and inner metropolitan area is supplied via a network of 330kV and 132kV lines and cables from 330/132kV substations at Sydney North (Dural), Sydney South (Picnic Point), Beaconsfield West and Haymarket. Beaconsfield West and Haymarket substations are supplied via 330 kV cables from Sydney South.
TransGrid and EnergyAustralia are proposing the construction of a new large transmission network asset to increase the capacity of the transmission network supplying the area. The proposal has major components as follows:
- Implementation of a demand management program
- Construction of sections of new double circuit 330kV line and conversion of parts of an existing double circuit line to operate at 330kV between Sydney West 330/132kV substation and the Holroyd area
- Construction of a new 330/132kV substation in the Holroyd area
- Installation of two 330kV cables between the new Holroyd substation and the Potts Hill area
- Construction of a new 330/132kV substation in the Potts Hill area (Rookwood Road, Potts Hill)
The demand management program is anticipated to cost around $20 million and is proposed to be implemented in Summer 2013/14. The other works are estimated to cost approximately $569 million and are proposed to be completed prior to the following summer.
| Application Notice - Development of Electricity Supply to the Sydney CBD and Inner Metropolitan Area |
December 2009 |
PDF |
| Request for proposals (RFP) 105/09 - Development of Electricity Supply to the Sydney CBD and Inner Metropolitan Area |
December 2009 |
 LINK |
TransGrid invites submissions to the Application Notice and Request for Proposals. Submissions are to be emailed to regulatory.consultation@transgrid.com.au
Southern Supply to the ACT
TransGrid and ActewAGL are proposing the construction of a new large transmission network asset and a new small distribution network asset.
The project consists of the following:
- Establishment of a new 330kV switching substation at Wallaroo (northwest of Canberra);
- Formation of 330kV circuits from Yass - Wallaroo and from Wallaroo - Canberra;
- Construction of a short section of 330kV line from Wallaroo to the route of the Canberra - Williamsdale 330kV line;
- Connection of the new line at Wallaroo and to the Canberra - Williamsdale 330kV line;
- Provision of an additional 375 MVA 330/132kV transformer at Williamsdale; and
- Upgrading by ActewAGL of its existing Gilmore to Theodore 132kV lines.
The estimated cost for these works is $36.1 million to TransGrid and $ 7.8 million to ActewAGL with completion scheduled for 30th June 2012.
| Final Report - Development of the Southern Supply to the ACT |
June 2009 |
PDF |
Redevelopment of Orange 132/66kV Substation
TransGrid and Country Energy are proposing the construction of a new large transmission network asset to increase the capacity of the transmission network to supply Orange.
The proposal has the following components:
- Establishment of a new 132kV switching station to the north of the existing Orange 132/66kV substation;
- Line rearrangements to connect the 132kV switching station to existing 132kV lines and to Orange 132/66kV substation; and
- Refurbishment works at Orange 132/66kV substation.
| Final Report - Redevelopment of Orange 132/66kV Substation |
May 2009 |
PDF |
Development of EnergyAustralia's Lake Munmorah 132/11kV Zone Substation
EnergyAustralia and TransGrid are proposing the construction of a new large transmission network asset to increase the capacity of supply to the Lake Munmorah area on the NSW Central Coast.
The proposal has the following components:
- Reconstruction of EnergyAustralia's existing Lake Munmorah 33/11kV zone substation on the existing site as a 132/11kV substation supplied at 132kV from TransGrid's Vales Point and Munmorah 132kV supply points; and
- Establishment of 132kV busbars at TransGrid's Vales Point and Munmorah 132kV supply points.
| Final Report - Development of Lake Munmorah Zone Substation |
May 2009 |
PDF |
NSW Lower Mid North Coast
TransGrid and Country Energy are proposing the construction of a new large transmission network asset to increase the capacity of the transmission network supplying the lower Mid North Coast.
The proposal has the following components:
- Construction of a short section of double circuit 330kV transmission line between TransGrid's Tomago 330kV substation and the Tarro area;
- Construction of a new double circuit 132kV transmission line between Tarro and Country Energy's Stroud STS;
- Connections to enable a new Tomago - Stroud 132kV circuit and a Tomago - Brandy Hill 132 kV circuit to be in service by summer 2012/13;
- Construction of a new single circuit 330kV line between Stroud STS and Lansdowne (north of Taree);
- Establishment of a new 132kV switching station at Lansdowne;
- Construction of a short section of double circuit 132kV transmission line between Lansdowne and TransGrid's Taree - Port Macquarie 132kV line; and
- Connections to enable new 132kV circuits from Stroud - Lansdowne, Taree - Lansdowne and Lansdowne - Port Macquarie to be in service by summer 2015/16.
| Final Report - Development of Electricity Supply to the Lower Mid North Coast |
August 2009 |
PDF |
| Application Notice - Development of Electricity Supply to the Lower Mid North Coast |
January 2009 |
PDF |