The World’s Largest Battery

The Waratah

Eraring, the largest coal plant in New South Wales (NSW) in Australia, is scheduled to close in 2025. And it’s against this backdrop that the NSW government initiated the tender for the building of the Waratah Super Battery as a priority transmission infrastructure project under the NSW Government’s Electricity Infrastructure Roadmap. The idea is that this project will ensure continued access to reliable and cost-effective electricity even after Eraring’s closure.

Project wins

850 MW
1680 MWh
Mid 2025 COD

Transmission support

Load shifting

Peak shaving

Frequency control

Ancillary services

Meet the Waratah Super Battery

A world first

As a System Integrity Protection Scheme, the Waratah Super Battery is effectively a giant shock observer for the grid. In other words, it will serve as a buffer in the event of sudden power disruptions which can be caused by weather events or wildfires. Under these conditions, the super battery will automatically charge or discharge to stabilize the network and prevent blackouts. The remaining capacity of the BESS could be used in energy arbitrage or wholesale markets.

To get this project off the ground, Powin will supply 2,592 Centipede™ Energy Segments and 288 power conversion systems from our wholly-owned subsidiary, EKS Energy. The super battery will be located 100 kilometers north of Sydney at the former Munmorrah Power Station, and it will play a key role in ensuring that more than 8 million people living in Sydney and surrounding areas will have access to reliable power.

This project matters because it has the potential to:
  • Create the foundation for an affordable, clean, and reliable energy system
  • Unlock latent transfer capacity in the existing transmission system
  • Maintain grid & system reliability
  • Reduce the risk of interruption
  • Ensure Sydney, Newcastle, and Wollongong

“Quote about the Service”


General Manager of American Fire Technologies
NFPA-855 Board Member

Power Partnership

Akaysha Chooses Powin as
the Trusted BESS Supplier

In 2022, the NSW government launched a competitive tender process to develop the Waratah Super Battery project. Energy Corporation of NSW (EnergyCo) selected Akaysha Energy to develop, own, and operate the Waratah Super Battery. Akaysha Energy then subsequently chose Powin as the only BESS provider for this project.

This partnership is independent of a supply agreement signed early in 2022 to deploy over 1.7 GWh of energy storage systems over the next two years. This agreement officially marked Powin’s entry into the Australian energy market.


Centipede™ Energy Segment:

  • We provide pre-integrated, factory-built, modular Stack 750 battery units.
  • For Waratah, we will supply 2,592 Centipede™ Energy Segment.

In-house PCS:

  • For this project, we will deliver 288 Power Conversion Systems.
  • Our StackOS™ makes everything work more efficiently, from monitoring equipment safety to responding to grid conditions.
  • This is an all-encompassing Battery Management System (BMS), Energy Management System (EMS), and Thermal Management System (TMS).
  • It will manage batteries, energy, and thermal conditions for the Waratah BESS.
  • We provide unparalleled insights and exemplary service offerings.
  • For the Waratah project, Powin will provide a 20-year long-term service agreement (LTSA).
  • This will enhance the super battery’s

Partner With Powin

We work hard to support all our project partners every step of the way because we understand that every project is unique and deserves individual attention — and we’re committed to providing solutions tailored to any size project developer, IPP, or utility.