ARENA chips in $24M for Origin’s Mortlake Battery

Large blue buildings at Mortlake Power Station in Victoria (battery ARENA)
Mortlake Power Station (Image: Origin Energy)

The Australian Renewable Energy Agency (ARENA) will provide up to $24 million in funding for Origin’s grid-supporting 300MW/650MWh Mortlake Battery in Victoria.

Related article: Origin approves large-scale battery at Mortlake Power Station

At a total cost of around $400 million, the battery, situated near the existing Mortlake Power Station, will provide grid forming and stability services to the region’s growing number of wind and solar farms, particularly in Victoria’s South West Renewable Energy Zone.

Fluence has been appointed as the EPC contractor and will utilise grid-forming inverters supplied by SMA.

ARENA will provide funding to  eight grid-scale battery projects across Australia. Each battery will be equipped with grid-forming inverter technology, allowing them to provide essential system stability services.

ARENA CEO Darren Miller said the project highlighted the growing importance of grid-forming capabilities for the energy grid.

“As traditional forms of energy generation are phased out, new clean technologies are required to take their place. Large-scale batteries can play a significant role in providing system stability services, particularly when fitted with advanced grid-forming inverters.”

“ARENA’s funding has been integral to creating smarter batteries with this technology. This is the fifth project to have been committed under the Funding Round, with three more to go across Australia.

“The decision to proceed by Origin further highlights the increased confidence in grid-forming inverter technology and the strong market incentives driving investment in battery storage.”

Related article: Origin acquires renewables developer Walcha Energy

The battery is expected to be commissioned in late 2026.

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