Neoen acknowledges the Nukunu & Ngadjuri people, Traditional Owners of the land on which Hornsdale Power Reserve stores energy. We pay our respects to their Elders past and present.
South Australia’s Big Battery
Sharing Benefits
Making a difference in local communities
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Thank you to the South Australian Government and the Northern Areas Council for their support.


The Hornsdale Power Reserve is the world’s first big battery. It provides essential grid-support services.

The first 100 MW/129 MWh was completed in November 2017. In its first two years of operation the Hornsdale Power Reserve confirmed the benefits associated with grid-scale batteries in the National Electricity Market and saved South Australian consumers over $150 million.

Following this success, a 50 MW/64.5 MWh expansion was completed in September 2020. As part of the expansion the full 150 MW is being upgraded to include Tesla’s Virtual Machine Mode, enabling the battery to provide inertia support services to the electricity grid.


Battery storage allows us to store the energy and provide it to the grid whenever it’s needed.

Click map to enlarge


The Hornsdale Power Reserve is located in a strong part of South Australia’s electricity transmission network approximately 15km north of Jamestown, about 3 hour’s drive from Adelaide.

The project is co-located with Hornsdale Wind Farm



Providing full time jobs plus ongoing opportunities for local businesses

For the consumer

Reducing South Australia’s energy costs by more than $150 million in the first two years.

For your community

Up to $60,000 per year
funding for local community initiatives and projects

Project Lifecycle

View Live Data Graph

The live data graph indicates how much power the battery has charged and discharged in the past 48 hours, as well as the electricity price.
Click the button below to view it.

Neoen has been contributing to Australia’s energy transition with 100% renewable energy since 2012.

With a balanced portfolio of wind, solar and big battery projects, we are aiming to achieve 10 GW by 2030. We own and operate all of the projects we build (rather than developing them to be sold) and as long-term neighbours we are committed to sharing the benefits with surrounding communities.

This dedication to community and environment has made us a renewable energy developer of choice in Australia.