Neoen’s 219 MW/877 MWh Battery Storage project begins operation in Australia

NEOEN has taken less than 18 months to build and start operating its 219 MW/877 MWh Collie Battery Stage 1, the battery storage facility located near the town of Collie, in the country of the Wilman people of the Bibbulmun nation, in the South West region of Western Australia.

It is the first Neoen asset to connect into the South-West Interconnected System (SWIS) and, in collaboration with Tesla, UGL, and network service provider Western Power. Collie Battery Stage 1 began delivering its 197 MW / 4-hour grid capacity service to the Australian Energy Market Operator (AEMO). The contract, called ‘Non-Co-optimised Essential System Services’ (NCESS) runs for two years. The battery provides 197 MW of storage capacity for 4 hours, charging during the day and then discharging across the evening peak. 

The battery is Neoen’s first major project in WA and its first 4-hour long-duration battery globally. Collie Battery Stage 2 (341 MW / 1,363 MWh), which is currently under construction, was awarded a similar 300 MW / 4-hour NCESS contract by AEMO in April 2024. Altogether, the Collie Battery (560 MW / 2,240 MWh) will have the ability to charge and discharge 20% of average demand in the SWIS.