The steel industry, accounting for 7% of global greenhouse gas emissions, is under pressure to decarbonize to meet climate targets. Europe leads in decarbonisation efforts, with plans for green-steel hubs powered by renewable energy and technologies like Direct Reduced Iron (DRI) production and carbon capture. These hubs aim to optimize ironmaking and steel production processes, reducing emissions and meeting the demand for green steel in sectors like automotive and construction. Transitioning from traditional blast furnace–basic oxygen furnace (BF-BOF) plants to DRI production using green hydrogen or natural gas, along with incorporating renewable-energy-powered furnaces, is crucial for decarbonisation. Hybrid models combining scrap with HBI from green-steel hubs offer emission reduction opportunities. The success of green-steel hubs relies on collaboration and integration, with a focus on efficiency and sustainability. This shift towards green-steel hubs presents a significant step towards a low-carbon economy, emphasizing the importance of technological innovation and strategic partnerships in achieving a sustainable future.