Broken Hill GT (GB01)

Other Generators · Transgrid · Turbine - OCGT

Dispatch stats Financials
Operational AEMO: In Service NSW1 Fossil - Diesel NEM data · 18h
50 MW
Registered nameplate capacity
18h revenue
$0
Capacity factor
0.0%
Revenue / MWh
—
Est. SRMC
$2.11/MWh

Energy flow

Dispatch target (cleared) vs availability — 5‑minute intervals. NSW1 regional price (RRP) on right axis.

Key information
Capacity
50 MW

AEMO status In Service
Project status Operational (AI)

Transgrid PACR and project page note the existing turbines were already in service and later purchased from Essential Energy (Transgrid, 2022).

Region NSW1
Coordinates -31.95600, 141.46700 (AI)

Broken Hill town/site references place the asset in the Broken Hill area; exact turbine pad coordinates not publicly specified in the provided sources (Broken Hill coordinates from geospatial reference sources).

MLF 0.9228
DUID GB01
Owner Transgrid
Commissioned —
Expected closure 2027
Closure date —
Technology Turbine - OCGT
Fuel Fossil - Diesel
Equipment OEM Essential Energy
Equipment type / model diesel gas turbine (25 MW class, model not publicly specified)
Equipment confidence medium
Stats window
13 Jun 2026 00:00 → 13 Jun 2026 17:30 AEST

Dispatch & revenue

13 Jun 2026 00:00 → 13 Jun 2026 17:30 AEST

Energy revenue (× MLF)
$0
FCAS revenue (× MLF)
$0
FCAS volume
— MWh
Dispatched
— MWh
Available
— MWh
Curtailed
— MWh
Curtailment
—
of available
MLF used
0.9228
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
2024-07-01 0.8518
2025-07-01 0.9228

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
Other
Capacity
50 MW
Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$2.11/MWh
Capex total (greenfield)
$105.49M

Shown in table
$105.49M (2026 real AUD)

Reported / source value
$100.00M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
Used internal fallback capex = 2,000,000 AUD/MW × 50 MW because no owner/developer or government source gave a plant-specific original construction cost.
Capex refurbishment
—
Capex / MW derived
$2,109,705

Shown in table
$2.11M (2026 real AUD)

Reported / source value
$2.00M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX (annual)
$2.11M

Shown in table
$2.11M (2026 real AUD)

Reported / source value
$2.00M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
Used internal fallback fixed O&M = 40,000 AUD/MW-yr × 50 MW.
Fixed OPEX / MW-yr
$42,194

Shown in table
$42.2k (2026 real AUD)

Reported / source value
$40.0k (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Variable OPEX / MWh
$2.11

Shown in table
$2.11 (2026 real AUD)

Reported / source value
$2.00 (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
Used internal fallback variable O&M because no verified site-specific value was found.
Fuel cost / GJ
—
Heat rate GJ/MWh
11.75

Shown in table
$11.75 (2026 real AUD)

How this was derived
AEMO heat-rate table lists generic new OCGT incremental heat rate at 11.75 GJ/MWh; used as a proxy for the diesel OCGT unit.

Reference
Heat rates (medium confidence)
Source recorded 05 Jun 2026

Confidence: low · Status: ai estimated · Capex basis: default · AI checked 05 Jun 2026

Notes
Despite searching Transgrid and related sources, no plant-specific greenfield construction cost for Broken Hill GT / GB01 was found. Available Transgrid material indicates the Broken Hill backup supply historically used two 25 MW diesel-fired turbines and that Transgrid acquired them from Essential Energy in 2022, but this does not provide original construction capex for GB01. Therefore capex uses the server-side default fallback only. Heat-rate fallback uses AEMO's generic new OCGT incremental heat rate as a proxy for this diesel OCGT asset; diesel-specific fuel use, emissions intensity, and asset life were not verified from source documents.

Sources