Halys BESS (X-Elio)

BESS · X-Elio Australia Pty Ltd · Storage - Battery

Dispatch stats Financials
Development AEMO: Publicly Announced Other - Other NEM data · 30 days
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Registered nameplate capacity — refresh AI for MW/MWh
Est. SRMC
$1.50/MWh
Key information

Capacity not yet researched — use Refresh equipment & project status (AI).

AEMO status Publicly Announced
Project status Development (AI)

Coordinates —

DUID —
Owner X-Elio Australia Pty Ltd
Commissioned —
Expected closure —
Closure date —
Technology Storage - Battery
Fuel Other - Other
Battery OEM —
Battery platform / chemistry —
Inverter OEM —
Inverter / PCS model —
Stats window
16 May 2026 00:50 → 15 Jun 2026 00:50 AEST

Dispatch & revenue

16 May 2026 00:50 → 15 Jun 2026 00:50 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 (BESS)
Capacity
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Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$1.50/MWh
Capex total (greenfield)
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Capex refurbishment
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Capex / MWh storage
$358,607

Shown in table
$358.6k (2026 real AUD)

Reported / source value
$350.0k (2025 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX (annual)
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Fixed OPEX / MW-yr
$16,393

Shown in table
$16.4k (2026 real AUD)

Reported / source value
$16.0k (2025 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
For the 4-hour case, the draft AEMO/GHD report shows fixed O&M at AUD 16,000 per MW-year.

Reference
2025 Energy Technology Cost and Technical Parameter Review (draft) (medium confidence)
Source recorded 04 Jun 2026
Variable OPEX / MWh default
$1.50

Shown in table
$1.50 (2026 real AUD)
Fuel cost / GJ
—
Heat rate GJ/MWh
—

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

Notes
No plant-specific greenfield capex announcement was found for Halys BESS / South Burnett BESS. X-Elio’s project page identifies the asset as a 300 MW four-hour lithium-ion battery connected to the Powerlink Halys substation, with construction expected to start mid-2026 and operations targeted for end-2027. AEMO draft 2025 technology review provides a 4-hour large-scale lithium-ion BESS fixed O&M benchmark of AUD 16,000/MW/year and a 20-year design/technical life. Because the project-specific capex was not located, capex fields remain unfilled rather than using a benchmark as reported capex.

Sources