The Wallgrove Battery Energy Storage System is a 50,000kW energy storage project located in Sydney, New South Wales, Australia. The rated storage capacity of the project is 75,000kWh.

The electro-chemical battery energy storage project uses lithium-ion as its storage technology. The project will be commissioned in 2021.


The Wallgrove Battery Energy Storage System is owned by TransGrid (100%).

The key applications of the project are fast frequency response, synthetic inertia and grid supportive services.

Contractors involved

TransGrid is the owner. Tesla is the technology provider for the project.

Additional information

The federal government will provide up to AU$11.5 million of funding, through the Australian Renewable Energy Agency (ARENA) and its ‘Advancing Renewables Program,’ while the NSW government is offering up to AU$10 million through its ‘Emerging Energy Program’. The BESS is scheduled to start commercial operations in October 2021, with full construction work set to finish by November, before a two-year testing programme is conducted from Q4 2021 until the final quarter of 2023. The Wallgrove battery system will also be operated in energy arbitrage markets as well as frequency control ancillary services (FCAS) markets by renewable energy developer and asset operator Infigen Energy.


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.