Summerfield BESS (SMFBESS1)

BESS · CI Summerfield BESS Pty Ltd (ACN 656 223 773) as trustee for the CI Summerfield BESS Trust · Storage - Battery

Dispatch stats Financials

Construction AEMO: Publicly Announced SA1 Other - Other NEM data · 30 days

240/960 MW

Researched capacity / storage

30 days revenue

$-143

Capacity factor

0.0%

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 (AI)

240 MW / 960 MWh

Construction Front 2025; Summerfield BESS described as a 240 MW / 960 MWh four-hour battery storage project.

AEMO status Publicly Announced

Project status Construction (AI)

Construction Front 2025; CIP began construction on the 240 MW / 960 MWh Summerfield BESS in Australia after FID in Sep 2024.

Region SA1

Coordinates -35.07300, 139.11400 (AI)

ESCOSA 2026; battery energy storage system plants located at 120 Hoff Road, Tepko, South Australia.

DUID SMFBESS1

Owner CI Summerfield BESS Pty Ltd (ACN 656 223 773) as trustee for the CI Summerfield BESS Trust

Commissioned Dec 2025

Expected closure 2046

Closure date —

Technology Storage - Battery

Fuel Other - Other

Battery OEM —

Battery platform / chemistry —

Inverter OEM —

Inverter / PCS model —

Equipment confidence low

Dispatch & revenue

23 Jun 2026 06:05 → 23 Jul 2026 06:05 AEST

Energy revenue (× MLF)

$-143

FCAS revenue (× MLF)

FCAS volume

— MWh

Dispatched

-2.0 MWh

Available

— MWh

Curtailed

2.0 MWh

Curtailment

—

of available

MLF used

—

end of period

Revenue (× MLF)

Estimated $ per interval — energy (RRP) and FCAS (regional FCAS prices), both × MLF.

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).
Energy revenue (× MLF) — cleared MW × (5/60 h) × RRP × MLF.
FCAS revenue & volume — cleared FCAS MW from DISPATCHLOAD (raise/lower 6s, 60s, 5min, reg) × (5/60 h) × regional FCAS price × MLF. Volume is total FCAS enablement MWh across services.
State of charge — INITIAL_ENERGY_STORAGE (MWh at interval start) from UNIT_SOLUTION, published for bidirectional/storage units. Next-day data — the SOC line lags real time by up to a day.
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
2026-06-30	0.9998
2026-07-01	1.0008

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	$336.00M Shown in table $336.00M (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