Greenacre substation project

Artist impression Greenacre zone substation 

Ausgrid is planning to build a new substation to replace the existing zone substation in Rosedale Avenue, Greenacre. The replacement substation will be built on Ausgrid owned land at 222-230 Hume Highway, Greenacre, adjacent to the existing substation at 81 Rosedale Avenue. 

Project need

Zone substations such as the one in Rosedale Avenue are part of the power supply chain that delivers power from where it is generated to electricity users.

Electricity comes into a substation at high voltage (in this case 132,000 volts) and is converted to 11,000 volts for distribution to the community. Substation equipment includes transformers that converts electricity to lower voltages and switching gear that allows us to safely operate and maintain the electricity network. Smaller substations, such as the ones you may have seen in large green boxes by the side of the street, or mounted on the side of power poles, then convert power to voltages suitable for use in homes and businesses. These substations house equipment that includes transformers that converts electricity to lower voltages and switching gear that allows us to safely operate and maintain the electricity network.

The existing substation has been in service for more than 45 years and needs to be replaced to ensure we continue to provide a safe and reliable power supply for Greenacre and surrounding suburbs.

Once the new substation becomes operational, the old substation will be decommissioned. At that time Ausgrid will consider the sale of the remaining land.

Planning the new substation

Ausgrid has considered a range of options in the design of the substation. The factors we consider when planning options include:

  • cost (minimising the impact on electricity bills)
  • community impacts, including traffic impacts
  • availability around existing utility services
  • environmental and heritage impacts
  • technical feasibility.

In considering the surrounding community, the building has been designed to be in keeping with the local area.

Community involvement

Ausgrid has carried out early consultation with residents nearest to the proposed new substation. Feedback was sought on a range of architectural sketches with different styles of fencing and roof shape options. A new black ‘diplomat’ fence, similar in style to those used around schools, with a horizontal shape roof was the preferred option chosen by most residents. 

The first community newsletter will be issued to properties along or close to the proposed substation site route in July 2017.

All feedback will be considered by the project team as part of the process to minimise impacts during construction. To find out more or provide feedback to Ausgrid, please get in touch via the contacts on the right of this page. 

Project approval process and environmental assessment

Under the Environmental Planning and Assessment Act 1979, Ausgrid is the determining authority for this project. As part of this process, an environmental assessment (known as a Review of Environmental Factors or REF) has been prepared. The REF includes a range of specialist studies and input from the community, councils and other authorities.

The REF is on exhibition for comment until Friday 11 August 2017 and Ausgrid encourages further community comments on the proposal at this stage. You can submit your feedback via the link on this page or contact us and we can send you a form. 

There are a number of ways you can read the REF:

In person
Printed copies of the REF are available at:
Greenacre Library, Community Place, Greenacre NSW 2190
Ausgrid, 570 George Street – available at reception on Bathurst Street.

Via the link at the top right hand side of this page.

Following the exhibition period, Ausgrid will review and consider all submissions. You will receive an update after the environmental assessment is complete and a summary of the submissions will be available on the project web page. You can also contact us to request a copy.

Ausgrid will then assess the project for approval based on information contained in the REF, the submissions and other relevant documents. Subject to planning approval, Ausgrid plans to start construction work in November 2017.

Please contact us with any enquiries at any time via the contact details at right.

What to expect during construction

Like on any construction site there would be typical building impacts such as noise and dust as a result of work on and around the site. Any potential impacts are assessed as part of an environmental assessment (known as a Review of Environmental Factors or REF) and measures put in place to minimise impacts on the local environment.

The work with most significant impact would typically be during the first twelve months of the project as the builder carries out earthworks and building construction and the works associated with the new underground cables that would connect to the new substation. Installation of new equipment within the new structure would be of lower impact with Ausgrid staff working predominantly within the building.

Ausgrid does not plan to interrupt local electricity supplies as part of construction of the new substation.

There would also be temporary traffic impacts when the underground cables are being installed in local streets to connect the new substation to the electricity network which we would work to minimise.