Ballarat Energy Storage System

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The world-class consortium comprising Spotless, AusNet Services, EnergyAustralia and Fluence, has been commissioned by the Victorian Government and the Australian Renewable Energy Agency (ARENA) to design, construct and operate Victoria’s first utilities scale grid-connected Battery Energy Storage System.

The 30 Megawatt (MW) 30 Megawatt-hour (MWh) Battery Energy Storage System will be located at the AusNet Services Ballarat Terminal Station in Warrenheip, Ballarat. The system will comprise nine purpose-built and engineered battery enclosures (similar to a standard shipping container) for its Lithium–Ion batteries, operating system and environmental controls, security and associated cooling and safety systems.

Spotless Sustainability Services will manage the design and construction of this landmark project. They will commission the Battery Energy Storage System from Fluence, the recognised energy storage global leader. The system will be an unregulated asset of AusNet Services and will be installed at its Ballarat Terminal Station and connected to its electricity transmission network. Once the system has been commissioned and accepted by AusNet Services and the Australian Energy Market Operator (AEMO), EnergyAustralia will operate the charge and discharge of the system.

This energy storage initiative is supported by Government and private funding.


BESS – Partners

The consortium is made up of the following partners:

  • Spotless Sustainability Services

    Spotless Sustainability Services

    Spotless is a leading provider of integrated facilities services in Australia and New Zealand. Spotless’ 36,000 people, including 10,000 Victorians, deliver millions of service hours a year across more than 100 services that are essential to our customers. Spotless is the consortium lead company for the Victorian Government Energy Storage Initiative responsible for delivering the Battery Energy Storage System in Warrenheip, Ballarat. Spotless is 88 per cent owned by Downer EDI Limited (DOW), and headquartered in Melbourne.
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  • EnergyAustralia


    EnergyAustralia is one of Australia’s leading energy retailers, serving more than 2.6 million accounts and approximately 1.7 million customers nationally. EnergyAustralia owns and operates a multibillion dollar energy generation portfolio, including coal, gas and wind assets. EnergyAustralia is headquartered in Melbourne, employing around 2,500 people in Australia. EnergyAustralia will be the market operator and trader of the proposed Energy Storage System.
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  • AusNet Services

    AusNet Services

    AusNet Services owns and operates the Victorian electricity transmission network, one of the five electricity distribution networks and one of the three gas distribution networks in Victoria, and a commercial energy services business that provides utility-scale connection assets, commercial, industrial and community-based energy assets, platform solutions, metering, asset intelligence and telecommunication solutions to the utility and infrastructure sectors. AusNet Services will own the proposed Ballarat Energy Storage System.
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  • Fluence


    Fluence, a Siemens and AES company, is a global energy storage technology solutions and services company that combines the agility of a technology company with the expertise, vision, and financial backing of two industry powerhouses. Fluence’s goal is to create a more sustainable future by transforming the way we power our world. The company offers proven energy storage technology solutions designed to address the diverse needs and challenges of customers in a rapidly transforming energy landscape, providing design, delivery and integration in over 160 countries. Fluence works closely with customers during every step of their journey and provides advisory, financing, and project lifecycle services. To date, Fluence’s teams have deployed or been awarded over 500 MW in 16 countries.
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    The AusNet Services Ballarat Terminal Station (BATS) at 124 Coulsons Road in Warrenheip is the central hub for the electricity transmission network in western Victoria. It is the ideal location for the battery energy storage system to provide both peak electricity demand generation and electricity network support functions. The battery facility will complement the existing infrastructure and use of the site.