Synergy Renewable Energy Development (SynergyRED) has submitted a development application to the Shire of Coorow for a hybrid renewable complex that would add up to 500 MW of solar generation and an equivalent 500 MW of battery storage capacity.

The proposal would be built within the existing Warradarge wind farm envelope in the Shire of Coorow, Mid‑West region of Western Australia, re‑using roads, underground cabling and existing 330 kV transmission connections where feasible.

The site covers roughly five kilometres east‑west and six kilometres north‑south, extending the wind farm’s footprint while avoiding new infrastructure that could disturb the landscape.

The Shire of Coorow values the overall development at about A$2 billion (approximately US$1.4 billion), reflecting the combined value of the solar, battery and wind expansion components.

Existing wind capacity at Warradarge is 180 MW and is slated to increase to 283 MW with the addition of 30 new turbines, bringing the total to 81 turbines.

The battery system could be configured as a centralised unit or a dispersed array, though SynergyRED has not yet selected the final design or the storage duration.

The project has also been referred to the Western Australian Environmental Protection Authority for environmental assessment.

Public submissions on the development application close at 4 pm on 2 November 2026.

If approved, the hybrid complex would connect to the existing 330 kV transmission network serving the South West Interconnected System, strengthening grid capacity in the region.

SynergyRED anticipates that the solar farm will generate electricity during daylight hours, while the battery storage will shift supply to periods of higher demand, helping to manage solar variability on the grid.