BESS · Athena Energy Australia (Holdings) Pty Ltd · Storage - Battery
03 Jun 2026 19:45 → 04 Jun 2026 19:45 AEST
| Capex total (greenfield) |
$109.85M
Shown in table How this was derived Reference |
|---|---|
| Capex refurbishment |
—
|
| Capex / MWh storage |
$549,250
Shown in table How this was derived Reference |
| Fixed OPEX (annual) |
$1.33M
Shown in table How this was derived Reference |
| Fixed OPEX / MW-yr |
$13,300
Shown in table How this was derived Reference |
| Variable OPEX / MWh |
$0.00
Shown in table How this was derived Reference |
| Fuel cost / GJ |
—
How this was derived Reference |
| Heat rate GJ/MWh |
—
How this was derived Reference |
Confidence: medium · Status: ai estimated · Capex basis: estimated · AI checked 04 Jun 2026
Notes
Generator-specific BESS capex, O&M, charging cost, tolling/offtake, refurbishment and closure terms were not found in public sources. Public project documentation reports Bendemeer Solar Farm as a combined solar+BESS development, with BESS size stated as up to 150 MW / 300 MWh in the EIS economic assessment, while the KCI/NEMStats entry lists the Storage - KCI component as 100 MW and no MWh. For the financial profile, a 2-hour duration was inferred from the EIS BESS ratio and applied to the 100 MW KCI storage entry, giving an assumed 200 MWh. Capex uses CSIRO/AEMO GenCost 2023-24 final 2024 two-hour battery cost of AUD668/kWh, multiplied by 200,000 kWh. Fixed O&M uses the AEMO/GenCost battery FOM decomposition quoted in CAEEPR commentary: AUD4.5/kW-year plus AUD3.4/kWh-year, applied to 100,000 kW and 200,000 kWh. These are default technology assumptions, not reported Bendemeer contract costs. The reported AUD465.810357 million CIV is for the combined 280 MWDC solar farm plus BESS scope and was not allocated directly to the battery in the financial profile.
The NEMStats KCI entry lists Bendemeer Renewable Energy Hub - Storage - KCI as a publicly announced 100 MW battery with no DUID. Current NSW planning/amendment documents for the Bendemeer Solar Farm describe a larger BESS of up to 150 MW / 300 MWh and a commitment to LFP battery technology. No generator-specific battery EPC contract, debt close, OEM contract, O&M contract, revenue/fuel contract, or standalone BESS capex split was found. The capex estimate in this record scales Aurecon/AEMO 2025 IASR large-scale Li-ion BESS 2-hour co-located EPC assumptions to the KCI 100 MW capacity and assumes 2 hours / 200 MWh because the current project BESS is 150 MW / 300 MWh. Estimated capex excludes owner development, financing, GST, land, and any solar/shared substation cost allocation not included in the BESS EPC benchmark. Fixed opex uses Aurecon/AEMO 2-hour BESS fixed O&M plus indicative 20-year extended warranty allowance. Direct operational emissions are treated as zero for the battery itself; lifecycle and charging-energy emissions are not included. No major refurbishment or closure date was found; Aurecon notes 20-year design/technical life, potential extension to ~25 years after condition assessment, and later extension with battery upgrades.