Quinbrook, the developer of Australia's biggest battery, is focusing on hybrid solar and storage projects to power industrial energy needs at a competitive cost without government support. They are planning to build a smelting facility in Townsville powered by renewables, utilizing long-duration "infrastructure batteries" paired with cheap renewables. Australia is seeing a rise in DC-coupled solar-battery hybrid projects, with Quinbrook's partnership with China battery giant CATL allowing them to build batteries at a lower cost. Advancements in solar technology and batteries have led to historically low costs for solar energy, providing cheap and reliable energy for up to 18 hours a day in sunny locations like Gladstone and Townsville, without relying on government subsidies.