# Origin Energy Mortlake Power Station Battery

Publisher: CapexCue
Canonical dossier: <https://capexcue.com/projects/origin-energy-mortlake-power-station-battery-57b2728d-496/>
Dossier reference: release 1 (10b7e95d-dafe-4d56-a00c-2afdda370284)

Released project intelligence

Oldest supporting observation: 2026-10-15T14:35:04.208028+00:00
Dossier released: 2026-10-15T14:44:00.677039+00:00
Source report dates and capture dates are listed per fact below; neither establishes an event date.

## Project summary

ARENA's project listing describes a planned 300 MW / 650 MWh grid-forming battery at Mortlake Power Station in Mortlake, Victoria, with SMA inverters. Origin Energy Power Limited is listed as the lead organisation. The listing reports $24 million in ARENA funding and a total project cost of $417 million. It lists project dates of 1 February 2024 to 30 April 2029 and says the page was last updated 29 May 2024.

## Evidence limits and unknowns

- The source, last updated 29 May 2024, does not establish whether construction has started, whether the project has been completed, or its current status.
- The source does not state procurement status, supplier purchasing availability, or a buying window.

Current purchasing availability: unknown.
Source-dated plans do not establish current progress or available supplier packages.

## Project metadata

Country: Australia
Region: Oceania
Physical assets: Battery Storage
Derived from the exact released evidence; unresolved fields remain unclassified.

## Project category

Energy
Derived from the reviewed scope statement; delivery stage remains unclassified.
Origin plans to construct a 300 MW / 650 MWh grid-forming battery using SMA inverters. It is planned to be commissioned with grid-forming functionality enabled, tuned to improve system stability in Victoria, and operated with that functionality enabled at all times.
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00

Project overview
Oldest decisive evidence: 2026-10-15T14:35:04.208028+00:00
Newest evidence: 2026-10-15T14:35:04.208028+00:00
Knowledge reviewed: 2026-10-15T14:43:23.939692+00:00
Publication reviewed: 2026-10-15T14:44:00.216073+00:00

## Date
Listed project start date: 1 February 2024; listed end date: 30 April 2029. ARENA page last updated: 29 May 2024.
Status: reported
Attribution: arena.gov.au
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00

## Name
Origin Energy Mortlake Power Station Battery
Status: reported
Attribution: arena.gov.au
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00

## Scope
Origin plans to construct a 300 MW / 650 MWh grid-forming battery using SMA inverters. It is planned to be commissioned with grid-forming functionality enabled, tuned to improve system stability in Victoria, and operated with that functionality enabled at all times.
Status: planned
Attribution: arena.gov.au
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00

## Activity
Battery storage (primary project activity).
Status: reported
Attribution: arena.gov.au
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00

## Location
Mortlake Power Station, Mortlake, Victoria.
Status: reported
Attribution: arena.gov.au
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00

## Developer
Origin Energy Power Limited, listed as the lead organisation.
Status: reported
Attribution: arena.gov.au
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00

## Source Program
Advancing Renewables Program.
Status: reported
Attribution: arena.gov.au
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00

## Financing Amount
$24 million funded by ARENA; total project cost listed as $417 million.
Status: reported
Attribution: arena.gov.au
Source: arena.gov.au — https://arena.gov.au/projects/origin-energy-mortlake-power-station-battery/ | published unknown | observed 2026-10-15T14:35:04.208028+00:00


## Cite this dossier

CapexCue — Origin Energy Mortlake Power Station Battery — dossier released 2026-10-15T14:44:00.677039+00:00, release 1 (10b7e95d-dafe-4d56-a00c-2afdda370284) — https://capexcue.com/projects/origin-energy-mortlake-power-station-battery-57b2728d-496/.

For current information and later dossier updates, visit <https://capexcue.com/projects/origin-energy-mortlake-power-station-battery-57b2728d-496/>.
This file records the release identified above; the current dossier may change.