Liddell Battery

Liddell Battery

The Liddell Battery project comprises the development of a 500-megawatt, two gigawatt-hour grid-scale battery (BESS) on the site of the former Liddell power station - which retired in 2023.

The project is to be delivered over three stages:

  • Stage one: decoupling works to faciliate new connection following the retirement of the Liddell power station.
  • Stage two: delivery of the BESS.
  • Stage three: ancilliary works to Bayswater power station.

Construction work for the BESS is expected to commence in early 2024. 

Construction works for the BESS project would include: 

  • Cut and fill to battery compound, transformer compounds, footings and construction laydown area
  • Trenching and installation of cable from Battery to 330 kV / 33 kV transformer compounds
  • Structural works to support Battery enclosures, inverters, transformers, buildings and transformer compounds
  • Delivery, installation and electrical fit-out of the Battery
  • Delivery installation and fit out of transformers and ancillary equipment for decoupling works
  • Testing and commissioning activities 
  • Installation, maintenance and access works 
  • Demolition or deconstruction of existing equipment  
  • Establishment of a hardstand pad and construction laydown areas

Key Dates

Dec 2023 Contract Award
Jun 2026 Expected Construction Completion

Funding contributions

In December 2022, the Australian Renewable Energy Agency (ARENA) announced the project as one of eight Battery Energy Storage Systems to receive conditional funding through ARENA’s $176 million Large Scale Battery Storage Funding Round. 

The project will be supported by a $35 million grant from ARENA's  Large Scale Battery Storage Fund and a Firming Long-Term Energy Service Agreement (LTESA), arranged by AEMO Services on behalf of the NSW Government.


Procuring Agency: AGL
Successful Tenderer: Fluence (a Siemens and AES Company)


Mar 2022 The project received planning approval from the NSW Department of Planning and Environment.
Dec 2022 The project was announced as one of eight battery projects to receive conditional funding from the Australian Renewable Energy Agency (ARENA)'s Large Scale battery storage Funding Round, pending a formal funding agreement. The exact funding allocation has not been announced.
Mar 2023 The NSW Department of Planning granted the project Stated Significant Development (SSD) status.
Nov 2023 The project was awarded a Firming Supply Long-Term Energy Service Agreement by AEMO Services under Tender Round Two of the NSW Electricity Infrastructure Roadmap.
Dec 2023 AGL announced it had reached Final Investment Decision for the 500 MW grid scale battery. The total construction cost for the project is estimated at approximately $750,000,000.
Dec 2023 Fluence was selected as the preferred engineering, procurement and construction provider for the delivery of the BESS.
Estimated Total Cost
Procurement approach
Unconfirmed |
New South Wales |