How South Australia's grid-scale batteries performed in H2 2025: energy and FCAS market revenue, $/MW, $/MWh, top performers, and price events.
South Australia (SA1) batteries earned $35.51M in estimated gross energy and FCAS market revenue in H2 2025, from 12 grid-scale units tracked by NEMPulse. Figures cover the full period.
Normalised across 921 MW and 1,448 MWh of registered capacity, the region earned $39k/MW and $25k/MWh for the period.
Energy arbitrage supplied 79% of the total and FCAS 20%, with estimated Frequency Performance Payments contributing the remaining 1% ($490k). Within FCAS, regulation accounted for 31% and contingency 69%; the single largest market was raise 6-second at $2.02M.
For context on the trading conditions, the average daily price spread (top two hours minus bottom two hours) in South Australia was $305/MWh, and the highest spot price reached $20,300/MWh.
Against the perfect-foresight energy benchmark, South Australia batteries captured 45% of what hindsight would have earned, an estimated $33.47M of unrealised upside.
On capture of the perfect-foresight energy benchmark, the strongest performers were Bolivar Waste Water Treatment Plant (78%), Happy Valley Water Treatment Plant (75%), Christies Beach Wastewater Treatment Plant (72%). At the other end: Hornsdale Power Reserve (36%), Lake Bonney BESS1 (30%), Dalrymple North BESS (19%) — capture reflects strategy, contracting and constraints as much as skill, so a low figure is not automatically underperformance.
The strongest single day was 2 Jul 2025 at $5.21M, and the best single battery-day was Blyth Battery Energy Storage System on 2 Jul 2025 with $2.15M. Revenue stays concentrated: five of the period's 184 days delivered 20% of everything South Australia batteries earned.
Blyth Battery Energy Storage System led the region with $11.01M. Full dispatch, state-of-charge and bidding detail is available on each battery's page.
South Australia saw 112 price events this period, the sharpest an extreme price event peaking at $20,300/MWh.
| Battery | Energy + FCAS | $/MW | $/MWh | Capture |
|---|---|---|---|---|
| Blyth Battery Energy Storage System | $11.01M | $55k/MW | $28k/MWh | 48% |
| Torrens Island BESS | $8.35M | $33k/MW | $33k/MWh | 44% |
| Hornsdale Power Reserve | $5.71M | $38k/MW | $29k/MWh | 36% |
| Templers Battery Energy Storage System | $3.24M | $29k/MW | $11k/MWh | 54% |
| Mannum Battery Energy Storage System | $2.80M | $28k/MW | $14k/MWh | 44% |
| Tailem Bend 2 Hybrid Renewable Power Station | $1.94M | $47k/MW | $47k/MWh | 51% |
| Lake Bonney BESS1 | $1.44M | $58k/MW | $28k/MWh | 30% |
| Adelaide Desalination Plant | $323k | $52k/MW | $54k/MWh | 69% |
| Happy Valley Water Treatment Plant | $245k | $61k/MW | $61k/MWh | 75% |
| Dalrymple North BESS | $193k | $6,431/MW | $16k/MWh | 19% |
| Bolivar Waste Water Treatment Plant | $135k | $67k/MW | $67k/MWh | 78% |
| Christies Beach Wastewater Treatment Plant | $134k | $63k/MW | $67k/MWh | 72% |
Capture = actual energy revenue as a share of the perfect-foresight LP benchmark; shown only for units with material modelled upside.
Third-party reporting on these units, matched automatically and linked for context. NEMPulse does not endorse or verify external coverage.
Keep reading: NEM-wide wrap — H2 2025South Australia battery fleetActual vs optimal dispatchMarket eventsHow capture is calculated
Explore: All insightsBattery fleetActual vs optimalPerformance rankingsMarket economicsMarket eventsBid stackBidding strategyVirtual power plantsHome battery potential (modelled)Project simulatorAskPulseEmail alerts
Automatically generated from AEMO public data using fixed templates (not AI-written). Figures are estimated gross market revenue (energy + FCAS) from dispatch — they exclude contracts, hedges and network-support schemes (e.g. SIPS), so actual commercial revenue will differ.
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