TagEnergy will begin construction in early 2026 on a 150 megawatt (MW) battery energy storage system with a capacity of 600 megawatt-hours (MWh) at the Golden Plains Wind Farm site in the state of Victoria. This project marks the independent power producer’s first storage investment in Australia, reinforcing its presence in a rapidly evolving market.
An integrated project within existing infrastructure
The infrastructure contract has been awarded to Consolidated Power Projects Australia (CPP), which will install the system and a dedicated substation. Tesla will supply 168 Megapack 2XL battery units for the installation, which will be directly connected to AusNet’s substation at the Rokewood site, already linked to the operational first stage of the wind farm. Commissioning is scheduled for mid-2027.
The Golden Plains Wind Farm, comprising two phases totalling 1,333 MW, is among the largest in the southern hemisphere. The first 756 MW phase is undergoing commissioning, while the second 577 MW phase is under construction. Once completed, the site could supply up to 9% of Victoria’s electricity needs.
A lever for grid stability and demand management
The future facility will play a critical role in managing the 500 kilovolt high-voltage transmission network in the state’s west. It will store excess electricity generated in the middle of the day and release it during periods of peak demand, particularly in the evening.
This storage capacity will enhance the flexibility of the grid and contribute to frequency regulation, while supporting the performance of the existing wind farm. The system’s configuration will also enable energy arbitrage operations, charging the batteries when electricity is abundant and discharging when demand is highest.
A strategy for market expansion in Australia
This project is part of a series of strategic investments by TagEnergy in Australia. In August, the company acquired developer ACE Power, which holds a portfolio of advanced-stage storage projects. This acquisition gives TagEnergy direct access to several developments across different states.
The company, which already operates six storage systems in the United Kingdom, is also developing France’s largest battery site, currently under construction in the Grand Est region. By strengthening its position in multiple markets, TagEnergy aims to diversify its assets between generation and storage.
