Researchers from the Australian Centre for Advanced Photovoltaics have quantified the potential of ultra-low-cost solar to deliver 1,000 TWh per year for domestic use and 2,600 TWh per year for exports in Australia. The ARENA 30-30-30 vision aims for 30% solar module efficiency and an installed cost of $0.30 per watt by 2030, creating a 2,000 GW-scale solar market in Australia. This could support a fully decarbonized economy and large-scale production of green metals for global markets, changing the economics of Australia's energy transition. Cost reductions in heavy industry and closer cost parity with conventional production for green commodity production are expected as a result of ULC solar implementation.