Gannawarra Energy Storage System (GANNB1) is a 30 MW / 50 MWh grid-scale battery energy storage system in Victoria, tracked live on NEMPulse using AEMO 5-minute dispatch data. This page shows Gannawarra 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 50 MWh of storage across 30 MW of power, Gannawarra Energy Storage System is a 1.7-hour medium-duration battery — the 11th-largest of 15 grid-scale batteries in Victoria 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 $8k; capturing 41.6% 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 Victoria batteries: Victorian Big BatteryMornington BESSRangebank BESSMelbourne Renewable Energy Hub Connection A1Melbourne Renewable Energy Hub Connection A2Melbourne Renewable Energy Hub Connection A3
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