Western Downs Battery (WDBESS1)

BESS · Western Downs BESS Pty Ltd as trustee for Western Downs BESS Trust · Storage - Battery

Asset Watch Dispatch stats Financials

AEMO: removed QLD1 Other - Other NEM data · 30 days

255/510 MW

Registered nameplate capacity / storage

30 days revenue

$663.7k

Capacity factor

-1.4%

Revenue / MWh

—

Est. SRMC

$1.50/MWh

Energy flow

Dispatch target (cleared) vs availability — 5‑minute intervals. QLD1 regional price (RRP) on right axis.

Capacity

255 MW / 510 MWh

AEMO status removed

Project status —

Region QLD1

Coordinates —

MLF 0.9801

DUID WDBESS1

Owner Western Downs BESS Pty Ltd as trustee for Western Downs BESS Trust

Commissioned Dec 2024

Expected closure 2025

Closure date —

Technology Storage - Battery

Fuel Other - Other

Battery OEM —

Battery platform / chemistry —

Inverter OEM —

Inverter / PCS model —

Dispatch & revenue

06 Oct 2026 04:55 → 05 Nov 2026 04:55 AEST

Energy revenue (× MLF)

$663.7k

FCAS revenue (× MLF)

$26.5k

FCAS volume

13,338.4 MWh

Dispatched

-2,607.3 MWh

Available

156,351.8 MWh

Curtailed

158,959.8 MWh

Curtailment

101.7%

of available

MLF used

0.9801

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.

16.1 MWh 3%

at 05 Nov 03:55 · of 510 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
2024-11-14	0.9762
2025-07-01	0.9891
2025-09-08	0.9899
2026-07-01	0.9801

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	$178.50M Shown in table $178.50M (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