The Australian energy group AGL has officially broken ground on its Tomago Battery Project, located in the Hunter region of New South Wales (NSW), in Australia (AGL statement, 03/12/2025).
- The Tomago Battery is a 500 MW/2,000 MWh (4-hour duration) grid-scale battery being constructed at Tomago, NSW.
- The US-based energy storage systems supplier Fluence (a joint venture of Siemens and AES) has been appointed as the EPC contractor.
- Operations are expected to start in the second half of 2027.
“With operations targeted for the second half of 2027, the Tomago Battery Project will play a critical role in supporting reliable electricity supply for our NSW customers and strengthening the state’s energy future,” the company stated.
AGL noted that the start of construction marks a major milestone in its strategy to deliver 12 GW of new renewable energy generation and firming capacity by the end of 2035.