Mt Stuart (MSTUART1)

Other Generators · Origin Energy Mt Stuart · Turbine - OCGT

Dispatch stats Financials

Operational AEMO: In Service QLD1 Fossil - Diesel NEM data · 24 hours

146 MW

Registered nameplate capacity

24 hours revenue

$25

Capacity factor

0.0%

Revenue / MWh

$31.14

Est. SRMC

$2.00/MWh

Energy flow

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

Capacity

146 MW

AEMO status In Service

Project status Operational (AI)

Wikipedia/Origin Energy: Mount Stuart Power Station commissioned Dec 1998 and operates as a peaking plant; Origin says the site uses an open-cycle gas turbine system.

Region QLD1

Coordinates -19.33800, 146.85100 (AI)

Wikipedia coordinates for Mount Stuart Power Station: 19°20′17″S 146°51′04″E.

MLF 0.9121

DUID MSTUART1

Owner Origin Energy Mt Stuart

Commissioned —

Expected closure 2033

Closure date —

Technology Turbine - OCGT

Fuel Fossil - Diesel

Equipment OEM GE Power

Equipment type / model 3x gas turbines (OCGT peaking plant), model not publicly specified

Secondary OEM Mitsubishi Power

Secondary equipment electric generator(s) / turbine package support, model not publicly specified

Equipment confidence medium

Dispatch & revenue

12 Jun 2026 18:15 → 13 Jun 2026 18:15 AEST

Energy revenue (× MLF)

$25

FCAS revenue (× MLF)

FCAS volume

— MWh

Dispatched

0.8 MWh

Available

1,380.0 MWh

Curtailed

1,380.0 MWh

Curtailment

100.0%

of available

MLF used

0.9121

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 from	MLF
2024-07-01	0.9471
2025-07-01	0.9121

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	$292.00M Shown in table $292.00M (2026 real AUD)
Capex refurbishment	—
Capex / MW default	$2,000,000 Shown in table $2.00M (2026 real AUD)
Fixed OPEX (annual)	—
Fixed OPEX / MW-yr default	$40,000 Shown in table $40.0k (2026 real AUD)
Variable OPEX / MWh default	$2.00 Shown in table $2.00 (2026 real AUD)
Fuel cost / GJ	—
Heat rate GJ/MWh	—

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