Overview

Transgrid is trialling the use of a large scale grid-scale battery to provide synthetic inertia and fast frequency response services to help keep the network stable. These network services are becoming increasingly important as more renewable generation joins the grid.

The project has received funding from ARENA as part of ARENA's Advancing Renewables Program and the NSW Government as part of the Emerging Energy Program.

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What does the project involve?

A 50MW/75MWh lithium ion battery will be installed at Transgrid’s Wallgrove substation in Western Sydney.

It will be connected directly into the transmission network to provide synthetic inertia and fast frequency response services. It will occupy an area of about 115m x 40m within the existing substation land. 

Project benefits

Batteries are potentially a much cheaper technical solution to controlling frequency than traditional technologies such as synchronous condensers. Finding lowest-cost ways of providing inertia and fast frequency response services ultimately benefits consumers by putting downward pressure on energy bills.

The trial will provide valuable technical information about the actual operation of the battery, including how often it will be needed for fast frequency response and how much electricity it is able to store and dispatch under different conditions.

Timeline

  • Detailed design work - Completed

    November 2020 - February 2021

  • Start of construction - Completed

    February 2021

  • Start of battery commercial operations - Completed

    December 2021

  • Completion of construction work - Completed

    January 2022

  • Testing program - Proposed

    Q4 2021-Q4 2023

Environmental approvals

Transgrid prepared a Summary Environmental Report (SER) under Part 5 of the Environmental Planning and Assessment Act 1979. The SER was determined on 28 April 2020. 

An Addendum SER was prepared to assess changes to the proposed activity due to detailed designed, and was determined on 28 July 2020. 

Operations Data

The operations data comprises the following 5-minute interval data relating to the Wallgrove Grid Battery:

  • Battery state of charge
  • Power and energy imported/exported, distinguished for energy dispatch target vs frequency control (including primary frequency response (PFR) and frequency control ancillary services (FCAS))
  • Reactive power imported/exported
  • Applicable energy prices and estimated gross revenue
  • Applicable FCAS prices, enablement, and estimated gross revenue
  • Applicable marginal loss factors (MLFs)

This data is provided subject to the disclaimer contained in the “explanation and disclaimer” document below. This document also contains a more detailed explanation of the data and how it is generated.

Explanation and Disclaimer

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Operations Data

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Resources

Fact sheets

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PDF 1.85 MB

Environmental reports

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PDF 4.63 MB

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PDF 2.53 MB

Contact us

Innovation

30 October 2020

Wallgrove Grid Battery to accelerate emerging technology

A blog by Eva Hanly, Executive Manager Strategy, Innovation and Technology.

Innovation

23 October 2020

First large-scale grid battery in NSW coming to Western Sydney

TransGrid welcomes today’s announcements by Minister Taylor and Minister Kean of the decision by the NSW Government and the Australian Renewable Energy Agency (ARENA) to award funding for the installation of the first large-scale grid battery in NSW, at TransGrid’s Wallgrove substation in Western Sydney.