Batteries arrive on site at Stanwell
28 Jul 2025
How many battery packs do you need to build the largest battery energy storage system under construction in Queensland? In this case, 324 Tesla Megapack units, each the size of a bus!
We’re making progress at our Stanwell battery project near Rockhampton, where nearly half the consignments of battery packs have arrived on site. They will continue to roll in daily until September, travelling from Brisbane to Stanwell along the Bruce Highway, Capricorn Highway and Power Station Road.
The 38 tonne battery packs are carefully unloaded from the drop-deck semi-trailers and positioned onto custom concrete pads using a crane. They will stay in safe ‘shipping mode’ until all the units are in place and commissioning works begin in November.
The construction site is adjacent to the existing Stanwell Power Station and the project is part of a larger plan to diversify the energy mix at the site. Coal-fired power stations provide reliable baseload electricity, and the addition of a 300MW, four hours’ storage duration battery will provide significant firming capacity to the Central Queensland electricity grid.
Batteries can be charged when energy generation is high, and discharge energy back into the grid when generation is low or demand is high, or to maintain grid stability. This system can charge and discharge electricity several times a day and can respond within fractions of a second to electricity demand. It will be used by Stanwell to participate in the wholesale electricity market, and to provide ancillary services to the NEM.
