en.Wedoany.com Reported - BLT Energy has recently obtained planning approval from the Western Australian Regional Development Assessment Panel to develop the Red Gully battery energy storage system in the Shire of Gingin, north of Perth. The project has a total planned capacity of 800 MW/4,800 MWh and is described as the largest utility-scale battery energy storage project in Western Australia.
The battery energy storage project will be developed in phases, with the first phase providing 400 MW of power and 2,400 MWh of storage capacity, connected to the South West Interconnected System (SWIS). The project site is adjacent to state-owned utility Western Power's Regans Terminal and will synergize with the Western Australia Clean Energy Link – North transmission network upgrade plan. The battery energy storage project is scheduled for completion in 2027. BLT Energy will proceed with detailed engineering design and first-phase financing following the planning approval.
Major operational battery energy storage projects in Western Australia include: Neoen's Collie Battery Phase 1 (219 MW) and Phase 2 (341 MW), Synergy's 200 MW/800 MWh Kwinana BESS Phase 2, and Synergy's 500 MW/2,400 MWh Collie BESS. In May 2026, utility-scale battery energy storage on the SWIS grid met 37.2% of peak-hour electricity demand. Energy Policy WA Coordinator Jai Thomas described this proportion as "one of the highest levels of battery energy storage penetration in an isolated grid globally."
Once both phases of the Red Gully project are fully constructed, its 4,800 MWh storage capacity will surpass that of the current largest operational battery in Western Australia—Synergy's 500 MW/2,400 MWh Collie BESS. The rapid advancement of battery energy storage projects reflects the accelerated deployment of storage infrastructure in Western Australia amid the coal power phase-out. The state government plans to retire all state-owned coal-fired power plants by 2030.
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