EnergyAustralia’s 50MW/245MWh Hallett Battery Energy Storage System (BESS) project in South Australia is progressing through construction, with the final battery pack installed in November 2026. Located alongside the existing Hallett gas-fired power station in Canowie, approximately 210km north of Adelaide, the project is designed to provide five hours of electricity storage.Similarly, Alinta Energy’s 100MW/200MWh Wagerup Battery Storage Project in Western Australia has entered commercial operation, further strengthening grid flexibility and renewable energy integration.
EnergyAustralia reached financial close in February 2026 and commenced construction shortly afterwards. Meanwhile, Enerven is delivering the civil, electrical and construction works, while NHOA Energy is responsible for supplying the battery systems and inverters.
The project is expected to begin commercial operations in mid-2027. In addition, planning approval allows for a second stage that could add 150MW of power capacity, increasing the site’s overall planned capacity to 200MW. Once operational, the facility will support grid stability, improve renewable energy integration and provide electricity during periods of peak demand.
Hallett Battery Energy Storage System (BESS) Project in South Australia Reaches Financial Close, Launched by EnergyAustralia
Reported on February 17,2026 – EnergyAustralia, Enerven, and NHOA Energy have reached financial close and officially launched construction of the 245 MWh Hallett battery energy storage system (BESS) project near Canowie in South Australia. This marks the project’s transition into delivery phase. The grid-scale system is expected to provide stability services to Australia’s National Electricity Market (NEM) and will begin commissioning in January 2027.
More on the Project Co-located with Hallett Gas-Fired Power Station
The project forms part of Australia’s push to deploy dispatchable clean-energy infrastructure capable of stabilizing grids with high renewable penetration. Backing under the federal Capacity Investment Scheme is also structured to reduce investor risk and accelerates storage deployment. Additionally, the Australian Government has been especially keen on supporting capital infrastructure as a way of ensuring renewables deployment remains on track. An example of this is long-duration vanadium battery development through projects like Kalgoorlie vanadium flow battery by AVL in Western Australia.
By colocating the battery energy storage system (BESS) project at the existing Hallett gas-fired power station, developers are also leveraging existing infrastructure. This will minimize transmission build-out, lower land impact, and shorten delivery timelines.
Hallett Battery Energy Storage System (BESS) Stage 1 Project Overview
Location: Near Canowie, South Australia
Owner/Developer: EnergyAustralia
Delivery partner: NHOA Energy
Electrical contractor: Enerven
Capacity: 245 MWh
Power rating: 50 MW
Duration: 5 hours storage
Technology: Grid-forming BESS with advanced control platform
Status: Financial close achieved. Project construction also started
Commissioning date target: January 2027
Technical Scope of Hallett BESS Project in South Australia
The battery will deliver multiple market and system services. These include:
- Frequency control and ancillary services
- Grid stability and support
- Energy arbitrage
- Participation in NEM market services
- Coordinated operation with existing energy generation sites via proprietary control software
Project Factsheet
Energy capacity: 245 MWh guaranteed usable at beginning of life
Power output: 50 MW
Storage duration: 5 hours
Site integration: Co-located with operating gas plant
Policy support: Australian Capacity Investment Scheme
Project phase: Delivery stage following financial close
Hallett Battery Energy Storage System (BESS) Project: Contractors and Stakeholders
- EnergyAustralia as owner, developer, operator
- NHOA Energy as BESS technology supplier and system integrator
- Enerven as electrical infrastructure and balance-of-plant works overseer
- Australian Government for CIS support framework
Outlook on the Project
Hallett BESS is a good template for hybridization of legacy thermal sites with large batteries. This is an approach increasingly being used globally to extend energy generation value while enabling renewables integration. With financial close achieved and government backing secured for Hallett BESS project, execution risk is now largely tied to delivery performance and grid integration milestones rather than financing. Once construction is complete, like at Templers BESS that is now in its final stretch of commissioning, Hallett will serve the good people of Australia with renewable energy as the world looks toward a greener, cleaner future.
Leave a Reply