The Waratah Super Battery Project has started partial operation, reinforcing the energy security of New South Wales’ electricity grid. As a vital “shock absorber”, the battery system is designed to mitigate power disruptions caused by events such as lightning strikes and bushfires.
The first 350 megawatts (700 megawatt-hours) of the battery’s total capacity have now been activated, with the full system expected to be operational later this year. Once completed, the Waratah Super Battery will be the most powerful battery energy storage system globally, situated at the site of the former Munmorah coal-fired power station, on the Central Coast.
This initiative is part of the NSW Government’s broader strategy to modernise the energy grid and ensure a clean, reliable, and affordable energy supply, particularly as the state phases out aging coal plants.
EnergyCo, the NSW Government body overseeing the project, has successfully brought online approximately half of the battery’s capacity. Additionally, the overarching control system is functioning, agreements with generators are in place, and the first stage of transmission network upgrades has been completed. The remainder of the capacity, totalling 850 megawatts (1680 megawatt-hours), is expected to be operational by the end of the year.
Transgrid operates the network, while Akaysha Energy is responsible for the battery storage system.
“The Waratah Super Battery is one of the biggest in the world and a crucial addition to our energy system. As it comes online, it will help power our homes and businesses while stabilising the grid to avoid blackouts,” says Minister for Climate Change and Energy, Penny Sharpe.
And according to EnergyCo CEO, Hannah McCaughey, switching on the Waratah Super Battery Project is a win for our grid and… will provide clean, reliable, and affordable energy to people in our state and the National Electricity Market. This is the first of our projects to go into operation, and we look forward to more milestones in our renewable energy zones this year.”
How the Waratah Super Battery Works
The project is not just a large-scale battery; it integrates multiple systems to stabilise and enhance the electricity grid. Key components include:
- A comprehensive control system
- Paired generation services to balance grid fluctuations
- Upgrades to the state’s existing transmission network.
It implements a system integrity protection scheme (SIPS), allowing transmission lines supplying the Hunter, Sydney, and Illawarra regions to operate at higher capacity. In case of a power line outage caused by lightning strikes, bushfires, or other events, the SIPS Control System directs the battery to inject additional power into the grid. Simultaneously, it reduces the output of paired generators to balance electricity flow.
The Waratah Super Battery will continue to play this role until the Hunter Transmission Project is completed, which will enable electricity to flow from inland renewable energy zones to the broader NSW network.
The Unique Innovation of the Waratah Super Battery
The project features the largest SIPS in Australia, capable of monitoring 36 transmission lines in real-time and responding instantly to system events. The scale of the battery is unprecedented, with the ability to deliver 850 megawatts for up to two hours.
The Waratah Super Battery is unique in that it allows existing transmission lines to be used more effectively and more quickly than new transmission lines could be built, significantly improving the grid’s overall capacity and responsiveness.
Employment and Economic Impact
The Waratah Super Battery Project has attracted over $1 billion in private investment and created thousands of jobs across the state. Approximately 1,000 people have been involved in its design and construction, including 170 workers at the battery site. Additionally, 474 workers have contributed to the network upgrades and installation of the SIPS Control System throughout NSW.
For further information, visit Waratah Super Battery Project.
