The project was completed in less than 18 months. Credit: Phonlamai Photo / Shutterstock.

Neoen‘s 219MW Collie Battery Stage 1 has commenced operations in Western Australia (WA).

Claimed to be the largest battery storage facility in WA, the 877MWh battery storage facility is located near Collie, on the Wilman people’s land of the Bibbulmun nation.

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The project was completed in less than 18 months, marking an impressive achievement for Neoen and its collaborators.

The facility is the first Neoen asset to connect to the South-West Interconnected System (SWIS) and was delivered ahead of schedule in collaboration with Tesla, UGL, and Western Power.

On 1 October, Collie Battery Stage 1 began delivering its 197MW/four-hour grid capacity service to the Australian Energy Market Operator (AEMO).

The service, known as ‘Non-Co-optimised Essential System Services’ (NCESS), is contracted for two years and is designed to help manage the grid’s stability.

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The battery’s storage, which can be sustained for four hours, is charged during the day and discharged during the evening peak hours.

This capability is particularly important as it addresses risks associated with the phased retirement of government-owned coal-fired power plants and the high penetration of rooftop solar in WA.

Neoen’s Collie battery is the first major project in WA and is also the company’s first four-hour long-duration battery worldwide.

The 341MW/1363MWh Collie Battery Stage 2, which is currently under construction, was awarded a 300MW/four-hour NCESS contract by AEMO in April this year.

Once fully operational, the entire site (560MW / 2,240MWh), will be capable of charging and discharging 20% of the average demand on the SWIS.

Neoen Australia chief executive Jean-Christophe Cheylus said: “We are extremely proud to have delivered the largest battery in Western Australia in record time.

“I would like to thank everyone who has worked tirelessly to make this happen: Western Power, Tesla and UGL, as well as AEMO and the Western Australian government. We are delighted to be contributing to a storage project of this scale and duration.

“With over 2GW of projects in our pipeline in WA, we are committed to continuing to play our part in the state’s energy transition.”