The Tarong Battery Energy Storage System (BESS) in Queensland, Australia, has just hit a major milestone, with all 164 of its Tesla Megapack 2XL units now fully installed — reports Ecogeneration.
Located at Stanwell’s Tarong Power Station in the South Burnett region, the $514 million AUD (roughly $330 million USD) project also recently completed the energization of its two 275kV power transformers, marking a critical step towards commissioning in mid-2025.
Once online, the 300 MW/600 MWh battery will have the capacity to power approximately 101,000 homes for two hours. The project is expected to play a key role in stabilizing Queensland’s grid, supporting renewable energy goals, and putting downward pressure on electricity prices.
Stanwell, a Queensland Government-owned energy company, has signed a 12-year offtake deal with Tesla for storage services from the site, which will operate as part of Stanwell’s growing portfolio of battery assets. The Tarong BESS is a flagship project in Stanwell’s goal of delivering 5GW of energy storage by 2035, as it works to transform the coal-fired Tarong Power Station into a clean energy hub.
Construction of the Tarong BESS began in August 2023, and the project is being delivered in two stages. It’s also creating up to 80 full-time construction jobs, with six permanent positions expected once the site is operational.
This isn’t the only Tesla Megapack-powered project in Australia. In Queensland alone, Tesla’s Megapacks are being installed at the 250 MW/500 MWh Swanbank Battery — situated at the site of a former coal-fired power plant — and a 100 MW/200 MWh energy storage facility near the Kogan Creek coal power station. Tesla’s Megapacks were also recently tapped for a $220 million AUD ($145 million USD) battery energy storage project in Western Australia.
Tesla deployed 9.6 GWh of battery energy storage products during Q2 2025, bringing its total for the first half of the year to around 20 GWh. As Australia continues to ramp up its battery infrastructure, Tesla’s utility-grade Megapack systems remain at the forefront of the country’s energy transition.
