1GWh battery energy storage system gets green tick to start construction in NSW

A 125 MW lithium-ion battery system with eight hours of storage capacity has received planning approval near Narrabri in northern NSW. The project, backed by a 14-year Long-Term Energy Service Agreement through AEMO, is expected to cost USD $25-$30 million and begin construction in Q4 2026, reaching commercial operation in H1 2028. It will comprise 191 containerised battery units and 64 inverters, connecting to the nearby Narrabri substation.

Where this fits

This is a firm-power story masquerading as storage. Eight hours of dispatchable capacity sounds useful until the grid encounters a multi-day low-wind, low-solar period. When that happens, the battery will be empty, and the grid will need gas or another firm source. The cost signal here matters: AEMO has awarded a 14-year subsidy contract to make the economics work, which means the project cannot stand on merchant revenue alone. That subsidy, the true cost of filling gaps that renewables create, is offloaded to the grid bill. Meanwhile, 191 containerised battery units represent 1,000 MWh of lithium cells, cobalt, nickel and processed minerals sourced through a supply chain dominated by China, adding another layer of strategic dependence.

What it means

Australia is building storage to buy time for renewables, not to solve the intermittency problem. Each eight-hour battery, each gas plant held in reserve, each transmission line looped around wind farms, is a cost item that a firm, dispatchable power source like nuclear would eliminate. The Narrabri BESS will help, but it will not enable a renewables-only grid, and its materials footprint and subsidy commitment are both anchored to Chinese supply chains and Australian taxpayers.