Battery energy storage systems (BESS) in Australia’s New South Wales (NSW) earned an estimated AU$5.63 million (US$3.88 million) in two hours on 12 October, as wholesale electricity prices peaked at AU$23,107/MWh.

Australia’s 58 grid-scale battery storage systems in the NEM generated a combined AU$28.79 million in estimated gross energy and FCAS revenue.

Australia’s 55 grid-scale BESS generated a combined AU$17.98 million in estimated gross energy and FCAS market revenue during June 2026.

OptiGrid’s Sahand Karimi examines why state of charge & algorithm quality drove divergent outcomes during SA1’s AU$20,300/MWh price cap on 21 June.