The Queensland government is delivering more affordable and reliable power, with four large-scale battery projects reaching key connection and market milestones across the state.
Over the past three months, state-owned transmission network provider Powerlink has energised the second stage of Quinbrook Infrastructure Partners’ Supernode battery at Brendale, alongside the Stanwell and Woolooga battery facilities. Iberdrola Australia’s Broadsound battery has also entered its testing and commissioning phase.
Once fully operational, the four assets will inject a combined 940 megawatts (MW) of storage capacity into the state’s electricity grid. This is enough to supply electricity to up to 940,000 homes during peak demand periods.
Treasurer and Minister for Energy David Janetzki said the rapid rollout of utility-scale storage under the government’s Energy Roadmap would apply downward pressure on wholesale energy costs.
“Big batteries play an important role in capturing excess energy throughout the day and discharging it during the evening peak when demand and prices are highest,” Janetzki said.
“Once these projects are operational, more than two gigawatts of large-scale battery storage will have come online since mid-2025, providing essential firming capacity to support new energy generation.”
The government expects the influx of storage to contribute to a 10 per cent reduction in electricity prices under the upcoming Default Market Offer, countering the significant tariff increases recorded in recent years.
Minister for Finance and Trade Ros Bates stated that securing major projects from international developers like Iberdrola demonstrated that Queensland had restored investment stability in the renewables sector.
“By securing these investments from Quinbrook and Iberdrola, we are strengthening Queensland’s energy future and supporting long‑term affordability for households and businesses across the state,” Bates added.
Powerlink interim CEO Darryl Rowell confirmed that the network operator has connected nine grid-scale batteries totalling over 2 GW in the past 12 months alone.
“The pipeline for BESS connections remains strong with a connection agreement with Quinbrook for the third stage of their Supernode BESS at Brendale being executed right now,” Rowell said.
