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CG render of the batteries at Akaysha's Ulinda Park BESS

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Ulinda Park BESS

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Akaysha Energy operates the 155MW /298MWh Ulinda Park BESS, adjacent to the Western Downs Substation in Queensland’s energy heartland.

Located within an established transmission zone originally built for conventional generation, Ulinda Park plays a critical role in supporting the rapid expansion of solar and wind across the Western Downs.

By leveraging existing network infrastructure, the BESS enables the efficient integration and delivery of renewable energy to customers across Queensland while strengthening system reliability and resilience.

Ulinda Park’s revenue is underpinned by a 10-year battery revenue swap with Re2, a leading climate risk transfer platform, balancing contracted and merchant exposure while preserving operational flexibility for Akaysha to optimise bidding across energy and FCAS markets.

Looking ahead, Akaysha Energy has been awarded the Australian Government’s Capacity Investment Scheme for the Ulinda Park Expansion (195MW/780MWh).

Once complete, the expanded Ulinda Park BESS will total 350MW/1,078MWh, further enhancing Queensland’s clean energy transition.

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Aerial view of the Waratah Super Battery

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Waratah Super Battery

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The Waratah Super Battery, at 850MW and 1680 MWh, is currently the world's most powerful battery.

Located about 100km north of Sydney and approximately 25km south of the retiring Eraring coal-fired power station, the Waratah Super Battery resides in a 138,000 square metre site (over 8 Australian Football fields).

The Waratah Super Battery is capable of providing a guaranteed continuous active power capacity of at least 700 MWs and a guaranteed useable energy storage capacity of at least 1400 MWh.

By operating as part of a System Integrity Protection Scheme (SIPS) to increase the transmission capacity of the existing network, the BESS will allow more power to flow from existing generators to meet the needs of the families and businesses of NSW.

The size of the Waratah Super Battery also allows Akaysha to trade the additional capacity in the electricity market placing further downward pressure on the cost to electricity users in NSW.

Akaysha Energy was appointed by Energy Corporation of NSW to develop the battery.

350MW of the Waratah Super Battery is online, with remaining capacity coming online by the end of this year.

Project partners include: Powin for battery hardware and software, Consolidated Power Projects (CPP) for engineering, procurement and construction, EKS (now part of Hitachi Energy) for power conversion systems and Wilson Transformer Company for power transformers.

Continuous active power capacity

700 MW

Useable energy storage capacity

1400 MWh

Square Metre site

138000 m2

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