AEMO and Transgrid approve Australia’s first 8-hour BESS for full operations

energy-storage.news May 28, 2026

AEMO and Transgrid approve Australia’s first 8-hour BESS for full operations

Curated by Shubham · TechCapsules · May 28, 2026

AI-summarised brief · reviewed before publication

AEMO and Transgrid have approved Australia's first 8-hour battery energy storage system for full operations. The 50MW/400MWh Limondale BESS, located near Balranald in southern New South Wales, comprises 144 Tesla Megapacks and can deliver its maximum discharge output for over 8 hours. The system can store excess renewable energy and dispatch it during peak demand, enhancing grid stability and reducing reliance on gas peaker plants. The project was sized at 8-hours in response to the New South Wales government's Electricity Infrastructure Roadmap. The approval marks a significant milestone in the development of long-duration energy storage in Australia, with the system set to provide backup during periods of low renewable energy generation or high demand.

💡 Why It Matters

· The approval of the Limondale BESS sets a new standard for long-duration energy storage in Australia, enabling the grid to rely less on gas peaker plants during extended periods of supply-demand imbalance.
· This milestone underscores the growing importance of battery storage in stabilizing the grid as renewable energy penetration increases.

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