Arundel BESS

BESS · Eku Energy Projects (Australia) Trust · Storage - Battery

Dispatch stats Financials
Publicly Announced Other - Other NEM data · 24 hours
300/1,200 MW
Registered nameplate capacity / storage
Est. SRMC
$0.00/MWh

Stats window 29 May 2026 04:00 → 30 May 2026 04:00 AEST

Key information
Capacity
300 MW / 1,200 MWh
Status Publicly Announced
Lifecycle Pre-operating
DUID —
Owner Eku Energy Projects (Australia) Trust
Commissioned —
Expected closure —
Closure date —
Technology Storage - Battery
Fuel Other - Other

Dispatch & revenue

29 May 2026 04:00 → 30 May 2026 04:00 AEST

No DUID specified. Open this page from the stats list or a generator profile.

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 storage lithium ion 4h
Capacity
300 MW / 1,200 MWh
Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$0.00/MWh
Capex total (greenfield)
$496.30M

How this was derived
No Arundel-specific capex was found. The estimate uses the official AEMO/Aurecon 2024 cost basis for a 4-hour lithium-ion BESS with dedicated grid connection, because Arundel/Wagga South is a 4-hour BESS.

Reference
2024 Energy Technology Cost and Technical Parameter Review (medium confidence)
Capex refurbishment
—
Capex / MW
$1,654,333
Capex / MWh storage
$413,583
Fixed OPEX (annual)
$6.36M

How this was derived
The fixed opex estimate includes both base fixed O&M and the indicative 20-year battery warranty cost for the 4-hour BESS case.

Reference
2024 Energy Technology Cost and Technical Parameter Review (medium confidence)
Fixed OPEX / MW-yr
$21,200

How this was derived
Aurecon reports separate base fixed O&M and extended warranty values; combined value is used as all-in fixed opex.

Reference
2024 Energy Technology Cost and Technical Parameter Review (medium confidence)
Variable OPEX / MWh
—

How this was derived
The source does not provide a numeric variable O&M assumption for BESS; the field is left null rather than estimating zero.

Reference
2024 Energy Technology Cost and Technical Parameter Review (medium confidence)
Fuel cost / GJ
—
Heat rate GJ/MWh
—

Confidence: medium · Status: ai estimated · Capex basis: estimated · AI checked 04 Jun 2026

Notes
Eku Energy states Arundel BESS is now Wagga South BESS: a proposed 300 MW / 1,200 MWh lithium-ion BESS in development near Gregadoo, anticipated operational in 2030 with proposed operational life of 20+ years. No project-specific capex, O&M, EPC award, supplier, financing, offtake/tolling or final investment decision was found. Capex is therefore estimated using Aurecon/AEMO 2024 BESS cost parameters for a 4-hour standalone 200 MW lithium-ion BESS with dedicated grid connection: AUD 525/kW power component plus AUD 274/kWh energy component, scaled to 300 MW / 1,200 MWh, plus AUD 10 million land/development allowance. This gives AUD 486.3 million EPC and AUD 496.3 million including land/development. Fixed opex is estimated using Aurecon 4-hour BESS O&M of AUD 12,800/MW-year plus AUD 8,400/MW-year extended warranty for 20-year battery life, total AUD 21,200/MW-year. Variable O&M is left null because Aurecon states BESS long-term service agreements are not typically structured as fixed/variable. Beginning-of-life round-trip efficiency is 85% at the point of connection. Direct operational emissions are set to zero; NSW EPA states BESS emissions are taken to be zero because they store electricity rather than generate emissions. Major closure/refurbishment note: GHD estimates 4-hour large-scale BESS retirement cost at AUD 94,000/MW, implying about AUD 28.2 million for 300 MW, with retirement including grid disconnection, battery module removal, cabling recovery and civil structure removal; Aurecon notes 20-year life may be extended to about 25 years depending on condition assessment and battery upgrades.

Sources