Mannum Battery Energy Storage System (MANNUMB1) is a 132 MW / 200 MWh grid-scale battery energy storage system in South Australia, tracked live on NEMPulse using AEMO 5-minute dispatch data. This page shows Mannum Battery Energy Storage System's energy arbitrage and FCAS revenue, state of charge, dispatch profile, bidding behaviour, and actual-vs-optimal performance in the Australian National Electricity Market (NEM).
With 200 MWh of storage across 132 MW of power, Mannum Battery Energy Storage System is a 1.5-hour medium-duration battery — the 8th-largest of 17 grid-scale batteries in South Australia by registered power. Duration sets how long it can sustain full output, and with it how much of the daily price spread it can arbitrage before running flat.
As of 6 July 2026: estimated gross energy + FCAS market revenue month-to-date $20k; capturing 13.2% of optimal dispatch value.
Price and dispatch are measured AEMO values; energy and FCAS revenue are derived from them; FPP revenue and integrated state of charge are estimated. See the provenance scheme on the methodology page.
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Other South Australia batteries: Blyth Battery Energy Storage SystemTorrens Island BESSBungama Battery Energy Storage SystemSummerfield BESS 1Summerfield BESS 2Hornsdale Power Reserve
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