Western Downs Battery - Stage 1 And 2 (WDBESS1)

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

Dispatch stats Financials
Operational AEMO: In Commissioning QLD1 Other - Other NEM data · 30 days
255/510 MW
Registered nameplate capacity / storage
30 days revenue
$703.0k
Capacity factor
-1.5%
Revenue / MWh
—
Est. SRMC
$1.58/MWh

Energy flow

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

Key information
Capacity
255 MW / 510 MWh

AEMO status In Commissioning
Project status Operational (AI)

Neoen / Western Downs Green Power Hub, Dec 2025: Stage 1 and 2 are now operating and delivering services to the NEM.

Region QLD1
Coordinates -26.76000, 150.58000 (AI)

Western Downs Green Power Hub project location near Chinchilla, Queensland (Neoen project page / site references).

MLF 0.9899
DUID WDBESS1
Owner Western Downs BESS Pty Ltd as trustee for Western Downs BESS Trust
Commissioned Dec 2024
Expected closure 2048
Closure date —
Technology Storage - Battery
Fuel Other - Other
Battery OEM Tesla
Battery platform / chemistry Megapack 2XL
Inverter OEM Tesla
Inverter / PCS model grid-forming inverter / PCS (not separately modelled in source)
Equipment confidence high
Stats window
15 May 2026 19:55 → 14 Jun 2026 19:55 AEST

Dispatch & revenue

15 May 2026 19:55 → 14 Jun 2026 19:55 AEST

Energy revenue (× MLF)
$703.0k
FCAS revenue (× MLF)
$61.7k
FCAS volume
71,543.5 MWh
Dispatched
-2,818.7 MWh
Available
152,294.8 MWh
Curtailed
155,174.7 MWh
Curtailment
101.9%
of available
MLF used
0.9899
end of period

Revenue (× MLF)

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

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.
  • 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 fromMLF
2024-11-14 0.9762
2025-07-01 0.9891
2025-09-08 0.9899

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.
Type
Battery (BESS)
Capacity
255 MW / 510 MWh
Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$1.58/MWh
Capex total (greenfield)
$188.29M

Shown in table
$188.29M (2026 real AUD)

Reported / source value
$178.50M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Capex refurbishment
—
Capex / MWh storage derived
$369,198

Shown in table
$369.2k (2026 real AUD)

Reported / source value
$350.0k (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX (annual)
$6.72M

Shown in table
$6.72M (2026 real AUD)

Reported / source value
$6.37M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX / MW-yr
$26,371

Shown in table
$26.4k (2026 real AUD)

Reported / source value
$25.0k (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Variable OPEX / MWh
$1.58

Shown in table
$1.58 (2026 real AUD)

Reported / source value
$1.50 (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fuel cost / GJ
—
Heat rate GJ/MWh
—

Confidence: medium · Status: ai estimated · Capex basis: default · AI checked 06 Jun 2026

Notes
No plant-specific greenfield CAPEX figure was found in the searched owner/developer or government sources. The project was identified as Stage 1 and Stage 2 of Neoen's Western Downs Battery, with both stages reported at 270 MW / 540 MWh and the combined asset at 540 MW / 1,080 MWh. Operating and cost assumptions use server fallback values for battery storage where plant-specific O&M data was not found.

Sources