The recent update on global steel projections highlights the need for decarbonization in the steel industry, following China's declining demand for construction materials. Flash ironmaking, an innovative technology developed in response to the inefficiencies of blast furnaces, has emerged as a promising solution. Originating from research at the University of Utah, flash ironmaking aims to reduce iron ore particles without the need for coke production and pelletizing, offering significant energy and emissions savings. While initial tests have shown impressive results in energy efficiency and emissions reductions, the process's reliance on combustion presents a challenge for achieving complete decarbonization. Combustion of gases like natural gas releases CO2, limiting the sustainability of flash ironmaking unless paired with zero-carbon fuels like hydrogen. Biomethane, another potential fuel, faces challenges in availability and scalability, making it difficult to support large-scale flash ironmaking operations. The article also addresses the broader issue of methane emissions and the need for sustainable production methods. Scaling up biomethane production to industrial levels poses significant challenges, including leaks from current biodigesters. While biomethane holds promise for various industrial applications, including direct iron reduction, its widespread use in flash ironmaking may be limited by these challenges. Overall, flash ironmaking presents a promising pathway for decarbonizing steel production, but overcoming the reliance on combustion and addressing fuel limitations are key areas for further research and development.