February 13, 2026
The $514 million 300MW Battery Energy Storage System (BESS) at Tarong Power Station has begun supplying electricity to the grid.
Construction of the Tarong Battery began in 2023.
It consists of 164 lithium-ion Tesla Megapacks and will boost Tarong power stations’ overall capacity to 2.1GW.
A Stanwell spokesperson said this meant Tarong was the single largest power generating site in Queensland.
Stanwell CEO Michael O’Rourke said Stanwell was playing a key role in establishing Queensland’s future energy portfolio, while continuing to invest in and maintain existing assets.
“This is a significant milestone for Stanwell, our first wholly owned battery project, delivered end-to-end by our team from concept through to construction, operations and maintenance,” Mr O’Rourke said.
“The 300MW battery will store energy during periods of high generation and then release it into the grid during periods of high demand, responding within fractions of a second to provide essential firming capacity and reliability.
“This exciting new chapter reflects the tireless dedication of everyone who has contributed to the project over the past two and a half years.”
The Stanwell spokesperson said the project had created 80 full-time jobs during construction as well as contract opportunities for local suppliers.
