Mannum BESS (MANNUMB1)

BESS · Mannum Stage 2 Battery SubCo Pty Ltd as Trustee for The Mannum Stage 2 Battery Unit Trust · Storage - Battery

Dispatch stats Financials

Operational AEMO: Anticipated SA1 Other - Other NEM data · 24 hours

100/200 MW

Researched capacity / storage

24 hours revenue

$10.7k

Capacity factor

-1.6%

Revenue / MWh

—

Est. SRMC

$1.50/MWh

Energy flow

Dispatch target (cleared) vs availability — 5‑minute intervals. SA1 regional price (RRP) on right axis.

Capacity (AI)

100 MW / 200 MWh

Epic Energy project page (epicenergy.com.au) states 100MW / 200MWh and 100 MW for up to two hours.

AEMO status Anticipated

Project status Operational (AI)

Epic Energy project page (epicenergy.com.au) says Mannum BESS commenced operations in 2025.

Region SA1

Coordinates —

ESCOSA states the site is approximately 4km west of Mannum, but no precise coordinates were available in the provided results.

MLF 1.0083

DUID MANNUMB1

Owner Mannum Stage 2 Battery SubCo Pty Ltd as Trustee for The Mannum Stage 2 Battery Unit Trust

Commissioned Sep 2025

Expected closure 2044

Closure date —

Technology Storage - Battery

Fuel Other - Other

Battery OEM e-STORAGE

Battery platform / chemistry Battery energy storage system (lithium-ion)

Inverter OEM e-STORAGE

Inverter / PCS model Battery containerized BESS / PCS not documented

Equipment confidence high

Dispatch & revenue

22 Jul 2026 07:55 → 23 Jul 2026 07:55 AEST

Energy revenue (× MLF)

$10.7k

FCAS revenue (× MLF)

FCAS volume

— MWh

Dispatched

-39.2 MWh

Available

2,016.7 MWh

Curtailed

2,082.7 MWh

Curtailment

103.3%

of available

MLF used

1.0083

end of period

Revenue (× MLF)

Estimated $ per interval — energy (RRP) and FCAS (regional FCAS prices), both × MLF.

🔋 State of charge

Stored energy at the start of each 5‑minute interval (AEMO INITIAL_ENERGY_STORAGE). Available up to the latest next‑day dispatch file.

156.6 MWh 78%

at 23 Jul 04:00 · of 200 MWh registered

Methodology & assumptions

Dispatch & availability — AEMO Next Day Dispatch UNIT_SOLUTION (5‑minute intervals). Intervention intervals excluded.
Regional price — dispatch_price RRP matched by settlement time and NEM region (from generator registry).
Energy revenue (× MLF) — cleared MW × (5/60 h) × RRP × MLF.
FCAS revenue & volume — cleared FCAS MW from DISPATCHLOAD (raise/lower 6s, 60s, 5min, reg) × (5/60 h) × regional FCAS price × MLF. Volume is total FCAS enablement MWh across services.
State of charge — INITIAL_ENERGY_STORAGE (MWh at interval start) from UNIT_SOLUTION, published for bidirectional/storage units. Next-day data — the SOC line lags real time by up to a day.
Curtailment — estimated economic curtailment when availability exceeds dispatch target: max(0, availability − cleared) × (5/60) MWh.
Not settlement — estimates only. AEMO settlement applies DLF, rebids, constraints, and other factors not modelled here.

MLF history (AEMO daily)

Effective from	MLF
2025-05-13	1.0144
2025-07-01	1.0294
2026-07-01	1.0083

Financial overview

2026 real AUD. Monetary values are CPI-adjusted to 2026 real Australian dollars. Greenfield capex uses AEMO benchmarks when plant-specific cost is unknown.

Capex total (greenfield) default	$70.00M Shown in table $70.00M (2026 real AUD)
Capex refurbishment	—
Capex / MWh storage default	$350,000 Shown in table $350.0k (2026 real AUD)
Fixed OPEX (annual)	—
Fixed OPEX / MW-yr default	$25,000 Shown in table $25.0k (2026 real AUD)
Variable OPEX / MWh default	$1.50 Shown in table $1.50 (2026 real AUD)
Fuel cost / GJ	—
Heat rate GJ/MWh	—

Confidence: unknown · Status: needs review · Capex basis: unknown