Hazelwood Battery Energy Storage System (HBESS) (HBESS1)

BESS · Hazelwood BESS Project Co Pty Ltd as trustee for the HBESS Asset Trust · Storage - Battery

Dispatch stats Financials
Operational AEMO: In Service VIC1 Other - Other NEM data · 24 hours
200/162 MW
Registered nameplate capacity / storage
24 hours revenue
$585
Capacity factor
-0.8%
Revenue / MWh
—
Est. SRMC
$1.87/MWh

Energy flow

Dispatch target (cleared) vs availability — 5‑minute intervals. VIC1 regional price (RRP) on right axis.

Key information
Capacity
200 MW / 162 MWh

AEMO status In Service
Project status Operational (AI)

Region VIC1
MLF 0.9873
DUID HBESS1
Owner Hazelwood BESS Project Co Pty Ltd as trustee for the HBESS Asset Trust
Commissioned Jun 2023
Expected closure 2025-07-02
Closure date —
Technology Storage - Battery
Fuel Other - Other
Battery OEM —
Battery platform / chemistry —
Inverter OEM —
Inverter / PCS model —
Stats window
03 Jun 2026 22:30 → 04 Jun 2026 22:30 AEST

Dispatch & revenue

03 Jun 2026 22:30 → 04 Jun 2026 22:30 AEST

Revenue (× MLF)
$585
Dispatched
-36.5 MWh
Available
850.0 MWh
Curtailed
900.8 MWh
Curtailment
106.0%
of available
MLF used
0.9873
end of period

Revenue (× MLF)

Estimated $ per interval using regional RRP and MLF effective on each day.

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).
  • Revenue (× MLF) — cleared MW × (5/60 h) × RRP × MLF. Chart uses MLF effective on each interval’s date; summary total uses MLF as at the end of the selected period (same as the revenue list).
  • 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
2024-08-15 0.9864
2025-07-01 0.9873

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
200 MW / 162 MWh
Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$1.87/MWh
Capex total (greenfield)
$186.57M

Shown in table
$186.57M (2026 real AUD)

Reported / source value
$150.00M (2021 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
Reported project construction cost for Hazelwood BESS at financial close / construction commencement.

Reference
Engie begins construction of 150 MW big battery at Hazelwood site (medium confidence)
Source recorded 04 Jun 2026
Capex refurbishment
—
Capex / MWh storage derived
$1,151,649

Shown in table
$1.15M (2026 real AUD)

Reported / source value
$925.9k (2021 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX (annual)
$6.22M

Shown in table
$6.22M (2026 real AUD)

Reported / source value
$3.75M (2021 nominal)
Table total may differ if recalculated from $/MW × registered capacity after CPI adjustment.
Fixed OPEX / MW-yr
$31,095

Shown in table
$31.1k (2026 real AUD)

Reported / source value
$25.0k (2021 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Variable OPEX / MWh
$1.87

Shown in table
$1.87 (2026 real AUD)

Reported / source value
$1.50 (2021 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: reported · AI checked 04 Jun 2026

Notes
Owner/developer press material indicates the Hazelwood BESS was jointly funded and developed by ENGIE and Eku Energy; a contemporaneous industry report cited an estimated project cost of $150 million at construction start in December 2021. The project was commissioned on 14 June 2023 and is described by ENGIE as having an expected lifespan of 20 years. No separate refurbishment capex was identified.

Sources