The owners and suppliers of Australia's biggest battery project, the Supernode battery, have reduced its footprint by 20% and are considering an extension to provide over 5 gigawatt hours of storage. The battery is owned by Quinbrook Infrastructure Services and contracted to Origin Energy, with plans for further expansion. Chinese battery giant CATL supplied the batteries for the project, which are designed to be more efficient and have higher density. The project highlights the rapid advancements in battery technology and the shift towards longer duration storage solutions in the energy market.