The Hornsdale Power Reserve – Battery Energy Storage System is a 100,000kW energy storage project located in Hornsdale, South Australia, Australia.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project was announced in 2017 and was commissioned in 2017.


The Hornsdale Power Reserve – Battery Energy Storage System is owned by Neoen (50%), a subsidiary of Impala and The Government of South Australia (50%).

The key applications of the project are frequency regulation, renewables capacity firming and renewables energy time shift.

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By GlobalData

Contractors involved

Neoen, Tesla and The Government of South Australia have delivered the battery energy storage project.

Additional information

The batteries will be charged by the wind farm and will discharge into the grid during times of peak and high demand. The batteries will also serve to smooth the integration of variable wind energy into the network and to provide backup power in the event of outages.

The expansion takes the total capacity of the battery to 150MW.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.