Kwinana Battery Energy Storage System 2
Kwinana Battery Energy Storage System 2 battery storage overview.
Kwinana Battery Energy Storage System 2 expands the storage facilities at the former Kwinana Power Station site in Naval Base, Western Australia. The four-hour battery stores surplus electricity and supports the South West Interconnected System, using a transmission connection shared with the neighbouring first-stage battery.In OperationAustralia
At a Glance
Capacity
225 MWEnergy storage
900 MWhStorage duration
4 hoursStorage type
StandaloneOwners
Electricity Generation and Retail CorporationOperator
Data coming soonCountry
AustraliaLocation
-32.202°, 115.778°Website
Official project pageOwnership
2 records| Share | Organisation | Role | Details | Period |
|---|---|---|---|---|
| Unknown | Operator | Synergy operates Kwinana Battery Energy Storage System 2 in the South West Interconnected System. | Current / not dated | |
| Unknown | Owner | Electricity Generation and Retail Corporation is identified as owner in the development application and Synergy reports the battery within its assets. | Current / not dated |
Organisations
13 recordsOrganisations recorded as working on this asset or its project, and their role.
| Organisation | Role | Details |
|---|---|---|
| Battery container system manufacturerEquipment Supply | CATL supplied the containerised battery systems installed for Kwinana Battery 2. | |
| Battery owner and operatorOwner Operator | Synergy owns and operates Kwinana Battery Energy Storage System 2. | |
| Transmission connection network operatorGrid Connection | Kwinana Battery 2 connects to Western Power’s 330 kV transmission system through infrastructure at the adjacent first-stage battery site. | |
| Civil and electrical balance of plant contractor groupEpc Balance Of Plant | GenusPlus Group was awarded the civil and electrical balance-of-plant contract for Kwinana Battery 2, including installation and commissioning works. | |
| Delivery partner and engineering servicesEngineering Consulting And Project Management | GHD supported Synergy through the integrated project management team, providing engineering, procurement, construction management, commissioning coordination and approvals support. | |
| Environmental noise assessment adviserConsenting Environmental | GHD prepared the environmental noise assessment used in the planning determination, including the April 2023 addendum referenced in the approval conditions. | |
| Civil and concrete works subcontractorEpc Balance Of Plant | JRC Civils delivered concrete cable trenches, earthing and firewater excavations, foundations, pavement, roads and drainage works under principal contractor GenusPlus Group. | |
| Civil and electrical construction businessEpc Balance Of Plant | Synergy’s 2024 report identifies Genus Industrial Services as the local contractor supporting construction of Kwinana Battery 2. | |
| Shared control facility electrical and communications contractorSubstation Electrical | Nilsen (WA) delivered electrical and communications infrastructure for the Kwinana Primary Data Centre supporting the two Kwinana batteries and other Synergy facilities. | |
| Planning application adviserConsenting And Planning | Planning Solutions prepared and presented the development application on behalf of SynergyRED. | |
| Battery inverter supplierEquipment Supply | Power Electronics was contracted to provide the 72 inverter units for Kwinana Battery 2. | |
| Development application proponentDevelopment | SynergyRED was the proponent represented in the May 2023 development application for Kwinana Battery 2. | |
| Bulk earthworks contractorEpc Balance Of Plant | Westforce undertook bulk earthworks, site preparation, the northern stormwater basin and access and laydown works for Kwinana Battery 2. |
Supplier registration
Developer supplier portalHow suppliers get onto this project's radar: its standing register, supplier portal or contact route.
Prospective suppliers can register interest through the corporate supplier page and enter the invitation-based accreditation process. The supplier guidance explains accreditation requirements and how invited sourcing events are handled.
Synergy’s portfolio supplier process invites expressions of interest through its supplier support channel. Ariba accreditation starts with an invitation from Synergy and is not a project-specific register for Kwinana Battery 2.
SourceChecked 28 Oct 2026