Ballarat Energy Storage System (BALB1)

BESS · Ausnet Transmission Group Pty Ltd · Storage - Battery

Dispatch stats Financials
Operational AEMO: In Service VIC1 Other - Other NEM data · 24 hours
30/30 MW
Registered nameplate capacity / storage
24 hours revenue
$-11
Capacity factor
-1.2%
Revenue / MWh
—
Est. SRMC
$0.00/MWh

Energy flow

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

Key information
Capacity
30 MW / 30 MWh

AEMO status In Service
Project status Operational (AI)

Region VIC1
MLF 0.9766
DUID BALB1
Owner Ausnet Transmission Group Pty Ltd
Commissioned —
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 19:50 → 04 Jun 2026 19:50 AEST

Dispatch & revenue

03 Jun 2026 19:50 → 04 Jun 2026 19:50 AEST

Revenue (× MLF)
$-11
Dispatched
-8.6 MWh
Available
95.2 MWh
Curtailed
103.9 MWh
Curtailment
109.0%
of available
MLF used
0.9766
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
2024-07-18 0.9605
2025-07-01 0.9766

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
30 MW / 30 MWh
Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$0.00/MWh
Capex total (greenfield)
$42.66M

Shown in table
$42.66M (2026 real AUD)

How this was derived
Official ARENA project page gives the broad reported total project cost used as capex_total_aud.

Reference
Ballarat Energy Storage System (BESS) (high confidence)
Source recorded 04 Jun 2026
Capex refurbishment
—
Capex / MWh storage derived
$1,422,000

Shown in table
$1.42M (2026 real AUD)

How this was derived
Derived calculation: 42.66m / 30 MWh = AUD 1.422m/MWh.

Reference
Ballarat Energy Storage System (BESS) (high confidence)
Source recorded 04 Jun 2026
Fixed OPEX (annual)
$270.0k

Shown in table
$270.0k (2026 real AUD)

How this was derived
No Ballarat-specific dollar O&M was found, so the fixed O&M estimate is a technology default scaled from Aurecon/AEMO’s 1-hour BESS values.

Reference
2024 Energy Technology Cost and Technical Parameter Review (medium confidence)
Source recorded 04 Jun 2026
Fixed OPEX / MW-yr
$9,000

Shown in table
$9.0k (2026 real AUD)

How this was derived
Default O&M assumption used because the Ballarat reports describe responsibilities and cost allocation but not annual dollar O&M.

Reference
2024 Energy Technology Cost and Technical Parameter Review (medium confidence)
Source recorded 04 Jun 2026
Variable OPEX / MWh
$0.00

Shown in table
$0.00 (2026 real AUD)

How this was derived
Used to set variable O&M to zero/not separately modelled for this battery; costs are captured in fixed O&M/LTSA.

Reference
2024 Energy Technology Cost and Technical Parameter Review (medium confidence)
Source recorded 04 Jun 2026
Fuel cost / GJ
—

How this was derived
Confirms there is no direct fuel use; charging electricity is not treated as fuel cost per GJ.

Reference
Ballarat Battery Energy Storage System Final Knowledge Sharing Report (high confidence)
Source recorded 04 Jun 2026
Heat rate GJ/MWh
—

How this was derived
Heat rate is not meaningful for an electrochemical storage asset.

Reference
Ballarat Battery Energy Storage System Final Knowledge Sharing Report (high confidence)
Source recorded 04 Jun 2026

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

Notes
Capex: ARENA project page reports total project cost of AUD 42.66m; a 2019 knowledge-sharing report also states project value of AUD 33.2m, likely a narrower D&C/substantial completion value. The financial profile uses ARENA total project cost as the broadest reported nominal project cost and preserves 2018 commissioning/commercial operation year. O&M: no Ballarat-specific dollar O&M amount was found; fixed O&M is estimated/defaulted using Aurecon/AEMO 2024 1-hour large-scale BESS assumptions: AUD 5,400/MW-year fixed O&M plus AUD 3,600/MW-year extended warranty, scaled to 30 MW = AUD 270,000/year. Variable O&M is set to 0 because Aurecon reports BESS long-term service agreements are not typically split into fixed/variable and variable O&M is shown as dash/included in fixed service costs. Efficiency is Ballarat-specific round-trip efficiency, averaged/rounded from contract year 1 and 2 operating parameters of 87.17% and 86.80%. Emissions intensity is direct operational emissions only; it excludes upstream emissions associated with charging electricity. Asset life uses a default modern lithium-ion BESS technical/economic life of 20 years; Ballarat-specific documentation confirms a 15-year Fluence service agreement but no explicit closure date. Major refurbishment/operational note: a battery replacement program was completed in contract year 2 after SoC restrictions affected availability; the report expected availability without the SoC restriction to reach approximately 99%.

Sources