Happy Valley Reservoir (HVWWBA1)

BESS · South Australian Water Corporation · Storage - Battery

Dispatch stats Financials

Operational AEMO: In Service SA1 Other - Other NEM data · 24 hours

6/9 MW

Registered nameplate capacity / storage

24 hours revenue

$-8

Capacity factor

-2.8%

Revenue / MWh

—

Est. SRMC

$1.50/MWh

Energy flow

Dispatch target (cleared) vs availability — 5‑minute intervals. SA1 regional price (RRP) on right axis.

Capacity

6 MW / 9 MWh

AEMO status In Service

Project status Operational

Region SA1

MLF 1.0024

DUID HVWWBA1

Owner South Australian Water Corporation

Commissioned Dec 2022

Expected closure 2025-07-02

Closure date —

Technology Storage - Battery

Fuel Other - Other

Battery OEM —

Battery platform / chemistry —

Inverter OEM —

Inverter / PCS model —

Dispatch & revenue

03 Jun 2026 22:40 → 04 Jun 2026 22:40 AEST

Revenue (× MLF)

$-8

Dispatched

-3.7 MWh

Available

22.0 MWh

Curtailed

25.8 MWh

Curtailment

117.3%

of available

MLF used

1.0024

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 from	MLF
2024-09-06	1.0043
2025-07-01	1.0024

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.

Capex total (greenfield) default	$3.09M Shown in table $3.09M (2026 real AUD)
Capex refurbishment	—
Capex / MWh storage default	$350,000 Shown in table $350.0k (2026 real AUD)
Fixed OPEX (annual)	—
Fixed OPEX / MW-yr default	$25,000 Shown in table $25.0k (2026 real AUD)
Variable OPEX / MWh default	$1.50 Shown in table $1.50 (2026 real AUD)
Fuel cost / GJ	—
Heat rate GJ/MWh	—

Confidence: unknown · Status: needs review · Capex basis: unknown