The article discusses the changing landscape of hydrogen in Australia, particularly in heavy industries like steel and ammonia production. While recent setbacks have hampered large-scale hydrogen projects, there is a growing recognition of hydrogen's potential in reducing emissions in heavy industrial sectors. The use of hydrogen in green iron production, when paired with renewable energy sources, is highlighted as a cost-effective and environmentally friendly alternative to traditional methods. Research suggests that shipping green iron to Europe for steel production could be significantly cheaper and reduce emissions by up to 95% compared to current practices. The article also emphasizes the concept of industry hubs where hydrogen is produced on-site for immediate use, cutting down on transportation costs and improving overall efficiency. However, challenges such as the dependence on renewable energy, high production costs, transport logistics, and the need for significant infrastructure upgrades remain obstacles to widespread adoption. Despite these challenges, there is optimism surrounding the economic opportunities that green hydrogen presents for Australia, potentially reshaping global supply chains and driving a shift towards sustainability.