The study highlights the potential of green hydrogen as an alternative energy source in aluminum recycling processes to address the industry's significant energy consumption and environmental impact. With the global aluminum market expanding rapidly, particularly in sectors like food packaging and construction, the research emphasizes the advantages of using green hydrogen produced from renewable sources to replace natural gas. By integrating green hydrogen into smelting and refining furnaces, the industry can achieve economic benefits and reduce CO2 emissions. The economic evaluation in Spain demonstrates a positive Net Present Value and Internal Rate of Return, indicating the viability of this approach. The study's methodology includes detailed assessments of energy requirements, renewable hydrogen production, and the economic feasibility of the integration. Environmental benefits, such as a substantial reduction in greenhouse gas emissions, underscore the importance of adopting green hydrogen solutions in aluminum recycling. Overall, the research showcases how green hydrogen can contribute to the industry's sustainability goals and drive the transition towards more environmentally friendly practices.