Australia’s energy storage market is undergoing a dramatic transformation. In the first quarter of 2025 alone, over AUD 2.4 billion (USD 1.5 billion) was invested in large-scale battery energy storage systems, marking the second-highest quarterly investment ever. These projects added 1.5 GW of storage and 5 GWh of energy output.

Several mega-projects are leading this battery storage boom. Notable upcoming BESS projects in Australia include the Australia-Asia Power Link BESS, the Denman BESS, Nebo Battery Energy Storage, and the Eastern Hub Firming BESS. These developments represent capacities ranging from hundreds of megawatts to multiple gigawatts.

This blog provides a complete overview of the Top 7 Upcoming Battery Energy Storage System Projects in Australia (2025), ranked according to capacity.

List of Top 7 Upcoming Battery Energy Storage System Projects in Australia (according to capacity)

Australia-Asia Power Link BESS

The Australia-Asia Power Link BESS is part of SunCable’s proposed solar power and transmission project connecting the Northern Territory to Darwin and Singapore. The battery energy storage system project is currently the largest battery energy storage project in Australia under construction. It is planned at Powell Creek to stabilise and store electricity generated from a six-gigawatt solar farm in the Barkly region.

Electricity from the solar farm will be transmitted 800 kilometres to Darwin through the DarwinLink HVDC line and then exported to Singapore via 4,300 kilometres of subsea cables under the SingaporeLink component. The project has undergone a major redesign since 2024, reducing both solar and battery capacity.

Hillview (Eastern Hub) Firming BESS

The Eastern Hub Firming BESS is a large-scale battery project planned in the New England Renewable Energy Zone of New South Wales. Developer ACE Power has received federal environmental clearance, allowing the project to advance without a full federal assessment. The 1,000 MW system will feature a storage duration of 4-8 hours, giving it a total capacity of up to 8,000 MWh.

The AUD 1.6 billion battery will serve as the anchor project for the Hillview Energy Hub, which also includes co-located solar and wind farms. The BESS is designed to operate independently and provide long-duration firming and energy arbitrage services, supporting renewable integration and enhancing grid reliability. Located on more than 100 hectares of cleared agricultural land at a high elevation in the Northern Tablelands.

Denman Battery Energy Storage System

The Denman BESS is a proposed large-scale energy storage project located in the Hunter-Central Coast Renewable Energy Zone, though it will connect directly into existing transmission infrastructure rather than using REZ assets. The facility will feature 2,400 MW of power capacity and 4,800 MWh of storage, making it one of the largest BESS projects ever proposed in Australia.

The project scope includes an on-site substation, internal electrical reticulation, a switchyard for grid connection, access roads, and supporting infrastructure. It will connect to Transgrid’s 500 kV transmission line that passes directly through the site.

Denman BESS forms part of Metlen’s Denman Renewable Energy Hub, which also includes the 90 MW Upper Hunter South Solar Farm. At full scale, the project will eclipse other major BESS developments in the country, including the 2.8 GWh Eraring BESS in NSW and Victoria’s 1.6 GWh Melbourne Renewable Energy Hub. Its massive 2.4 GW capacity positions it as a flagship project in Australia’s transition to firm, dispatchable renewable energy.

Currently, the project is under detailed planning, and the Secretary’s Environmental Assessment Requirements were issued in October 2024. EPBC Act referral for the project was submitted in March 2025, and construction is expected to commence in 2026.

Nebo Battery Energy Storage

The Nebo BESS is one of the largest BESS projects in Australia and ACE Power’s flagship storage project in Queensland. It is designed to provide 900 MW of firming capacity with a four-hour duration. Located on private land adjacent to Powerlink’s 275 kV Nebo substation, the project will deliver 3,600 MWh of storage to support renewable integration and enhance grid stability.

The energy storage project is expected to create around 150 jobs during construction and 10 ongoing operational roles. It is a key component of Queensland’s transition to a net-zero energy system, alongside ACE Power’s Raglan BESS (500 MW / 2,000 MWh). Both projects received EPBC approvals in 2025, reducing environmental risks and enabling faster progression toward delivery.

The  Development Application was approved by the Isaac Regional Council in May 2025 and granted a “not a controlled action” decision under the EPBC Act in February 2025. The construction of the energy storage system is set to commence in 2026.

Bremer Battery Energy Storage System

The Bremer Battery is a proposed 850 MW, four-hour battery energy storage system located in the Rosewood and Lower Mount Walker district of Queensland. The project will provide 3,400 MWh of firming capacity to support grid reliability and balance renewable generation. 

It is designed to charge during the middle of the day and discharge during evening peak demand, supplying enough electricity to power approximately 177,000 homes for four hours.

The project will create local economic opportunities, with over 200 jobs expected during the two-year construction phase. A Community Benefit Fund will also be established to provide direct support for landowners and local initiatives in the Rosewood and Lower Mount Walker communities.

Waratah Super Battery Project

The Waratah Super Battery is one of the largest battery energy storage projects in the world and plays a unique role in the New South Wales electricity grid. Located on the site of the former Munmorah coal-fired power station, the battery is designed to act as a “shock absorber,” protecting the grid from power surges caused by events such as lightning strikes.

The project goes beyond the battery itself. It includes an overarching control system, arrangements for paired generation services, and major upgrades to the state’s transmission network. Together, these elements allow the system to stabilise the grid and unlock greater renewable energy integration.

Construction of the battery component began in May 2023 and was completed in October 2024. The project entered partial operation in August 2025 and is expected to be fully operational by the end of the year. By repurposing disused industrial land with existing grid infrastructure, the Waratah Super Battery minimises local impacts while delivering critical system security for NSW’s clean energy transition.

Yanco Delta Battery Energy Storage System

The Yanco Delta BESS is part of Origin Energy’s large-scale wind farm development in the Riverina region of New South Wales. The 800 MW battery will provide 800 MWh of storage capacity, enabling it to absorb excess wind generation and release power back into the grid when needed. By doing so, it will enhance grid stability and support the integration of renewable energy into the electricity system.

Located near Jerilderie, the Yanco Delta BESS will be integrated with a 1.5 GW wind farm, forming one of the largest renewable generation and storage hubs in the state. Using lithium-ion technology, the big batteries of this project is designed to deliver flexible, dispatchable power to firm renewable output. 

Currently in the planning and approvals phase, the BESS is expected to align its development timeline with the commissioning of the wind farm between 2027 and 2029.

Wrapping up – Battery energy storage in Australia

Australia’s upcoming battery projects signal a major shift in the national energy landscape reducing the dependency on fossil fuel. Several government schemes like the Capacity Investment Scheme (CIS) aims to deliver the Australian Government's 82% renewable electricity by 2030.

From the 2.4 GW Denman BESS to the 850 MW Bremer and Waratah Super Batteries, these seven BESS projects Australia alone will deliver tens of gigawatt-hours of storage across New South Wales, South Australia, Queensland, and the Northern Territory.

The broader battery boom is driven by strong investment, supportive government policy and rise of large scale solar farms attracts more developers and investors to the country. In early 2025, AUD 2.4 billion was funneled into large-scale BESS developments, an 83% increase over yearly averages. 

Experts project that by 2027, up to 12.5 GW of new battery capacity could be operational, potentially allowing storage to meet as much as 40% of the nation’s electricity demand by 2030.

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