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Neoen Collie Battery

Collie Battery is Neoen’s first 4-hour-long battery and its first major project in Western Australia. 

The battery was built in stages: 

  • Stage 1, sized at 219 MW / 877 MWh, was constructed in less than 16 months and has been operating since October 2024.
  • Stage 2, sized at 341 MW / 1,363 MWh, was constructed in less than 15 months and has been operating since July 2025.

The Collie Battery can provide short-term storage in peak times to ease pressure on the grid. It can charge and discharge 20% of the average demand in Western Australia’s South-West Interconnected System (SWIS).

Aerial shot of battery storage facility surrounded by green fields and trees


Key facts  

  • Location: 13km north-east of the town of Collie, in the southwest region of Western Australia
     
  • Capacity: Stage 1: 219 MW / 877 MWh and Stage 2: 341 MW / 1,363 MWh
     
  • Benefits: Will enable more power from wind and solar, increase competition, and grid reliability 
     
  • Website: Collie Battery website

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