The completion of the Tarong Battery Energy Storage System (BESS) in Queensland, Australia, marks a significant milestone in the region’s transition to renewable energy. With all 164 Tesla Megapack 2XL units now fully installed at Stanwell’s Tarong Power Station, the $514 million AUD project is well on its way to commissioning in mid-2025.
The energization of the two 275kV power transformers is a critical step towards the project’s completion. Once online, the 300 MW/600 MWh battery will have the capacity to power approximately 101,000 homes for two hours. This immense storage capacity will play a crucial role in stabilizing Queensland’s grid, supporting renewable energy goals, and driving down electricity prices.
Stanwell, a Queensland Government-owned energy company, has entered into a 12-year offtake agreement with Tesla for storage services from the Tarong BESS. This project is part of Stanwell’s ambitious plan to deliver 5GW of energy storage by 2035, as the company works to transform the coal-fired Tarong Power Station into a clean energy hub.
Construction of the Tarong BESS began in August 2023 and is being delivered in two stages. The project is not only creating up to 80 full-time construction jobs but also expects to provide six permanent positions once the site is operational.
The Tarong BESS is just one of several projects in Australia powered by Tesla Megapacks. In Queensland alone, Megapacks are being installed at the Swanbank Battery and a energy storage facility near the Kogan Creek coal power station. Additionally, Tesla’s Megapacks were recently utilized in a $220 million AUD battery energy storage project in Western Australia.
Tesla’s commitment to sustainable energy solutions is evident in its deployment of 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 expand its battery infrastructure, Tesla’s utility-grade Megapack systems remain at the forefront of the country’s energy transition.