Eraring Big Battery (ERB01)

BESS · Origin Energy Electricity Limited · Storage - Battery

Dispatch stats Financials
AEMO: removed NSW1 Other - Other NEM data · 24 hours
240/1,030 MW
Registered nameplate capacity / storage
24 hours revenue
$38.5k
Capacity factor
7.0%
Revenue / MWh
$95.94
Est. SRMC
$1.58/MWh

Energy flow

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

Key information
Capacity
240 MW / 1,030 MWh

AEMO status removed
Project status — (AI)

Region NSW1
Coordinates —

MLF 0.9901
DUID ERB01
Owner Origin Energy Electricity Limited
Commissioned Apr 2027
Expected closure —
Closure date —
Technology Storage - Battery
Fuel Other - Other
Battery OEM —
Battery platform / chemistry —
Inverter OEM —
Inverter / PCS model —
Stats window
12 Jun 2026 00:00 → 12 Jun 2026 23:59 AEST

Dispatch & revenue

12 Jun 2026 00:00 → 12 Jun 2026 23:59 AEST

Energy revenue (× MLF)
$38.5k
FCAS revenue (× MLF)
$0
FCAS volume
— MWh
Dispatched
401.3 MWh
Available
11,040.0 MWh
Curtailed
10,638.7 MWh
Curtailment
96.4%
of available
MLF used
0.9901
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
2025-03-04 0.9925
2025-07-01 0.9901

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
240 MW / 1,030 MWh
Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$1.58/MWh
Capex total (greenfield)
$474.68M

Shown in table
$474.68M (2026 real AUD)

Reported / source value
$450.00M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
Industry report states Origin approved AU$450 million for the 240 MW / 1,030 MWh second-stage Eraring battery.

Reference
Origin elevates Eraring battery capacity over 2 GWh at site of Australia’s largest coal generator (medium confidence)
Source recorded 07 Jun 2026
Capex refurbishment
—
Capex / MWh storage derived
$460,858

Shown in table
$460.9k (2026 real AUD)

Reported / source value
$436.9k (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX (annual)
$4.05M

Shown in table
$4.05M (2026 real AUD)

Reported / source value
$3.84M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX / MW-yr
$16,878

Shown in table
$16.9k (2026 real AUD)

Reported / source value
$16.0k (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
AEMO/GHD draft report provides fixed O&M benchmark for a 4-hour lithium-ion BESS.

Reference
2025 Energy Technology Cost and Technical Parameter Review (high confidence)
Source recorded 07 Jun 2026
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).

How this was derived
No plant-specific battery variable O&M was found; internal default used.
Fuel cost / GJ
—
Heat rate GJ/MWh
—

Confidence: medium · Status: ai estimated · Capex basis: reported · AI checked 07 Jun 2026

Notes
Plant-specific greenfield investment for the 240 MW / 1,030 MWh second stage of Eraring Big Battery was reported by industry coverage as AU$450 million. This is treated as the project capex for ERB01. For operating assumptions, AEMO/GHD draft 2025 technology review gives fixed O&M of AU$16,000/MW-year for a 4-hour large-scale lithium-ion BESS, implying AU$3.84 million/year for 240 MW. No plant-specific fuel, heat rate, or emissions assumptions apply to a battery.

Sources