Tesla’s grid-scale energy business continues its global expansion, with TagEnergy confirming it will deploy 168 Tesla Megapack 2 XL battery systems at the Golden Plains Wind Farm in Victoria, Australia — a project that will become one of the largest combined wind and battery installations in the southern hemisphere.
The new battery energy storage system (BESS) will have a power capacity of 150 megawatts (MW) and total storage of 600 megawatt-hours (MWh), delivering a four-hour duration designed to support Victoria’s evening peak demand. Four-hour batteries are increasingly seen as the industry benchmark for stabilizing grids with high renewable penetration, especially during periods when solar and wind output begin to drop but electricity demand remains high.
Golden Plains is already a landmark renewable project. Once fully complete in mid-2027, the wind farm will have a total generation capacity of 1,333 MW — enough to supply around 9% of Victoria’s electricity needs. Stage 1 (756 MW) is currently in final commissioning, while construction on Stage 2 (577 MW) is well underway.
By pairing grid-scale battery storage with a wind farm of this size, TagEnergy says it can provide more than just clean energy generation. The project is designed to deliver critical system services, grid stability, and store excess renewable power during low-demand periods and discharging it when electricity is needed most.
Tesla’s role goes beyond simply supplying batteries. Each Megapack 2 XL unit will operate using Tesla’s grid-forming inverter technology, which allows the battery to actively support grid stability, frequency control, and voltage support — crucial for regions with large amounts of renewable generation.
The battery facility is scheduled to begin construction early next year, with operations targeted for mid-2027.
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• Tesla gives a tour of its Lathrop Megapack factory where it builds Megapack 2 XL
• Tesla gets massive 15.3GWh Megapack contract from Intersect Power
