The Mecalo project, funded by the European Commission, aims to transform metal production through innovative carbon-neutral processes. Traditional metal production is a significant contributor to global CO2 emissions, posing a challenge for sustainability. Mecalo's approach involves capturing carbon from furnace off-gases and converting it back into solid carbon feedstock. By utilizing a carbon looping system, the project enables renewable hydrogen to play a crucial role in producing critical raw materials like silicon and manganese necessary for the green transition. The concept allows for sustainable metal production while reducing environmental impact. The Mecalo process involves four key steps: methanation, plasmalysis, agglomeration, and metal production, demonstrating a closed-loop system that recycles carbon and uses hydrogen as a feedstock to eliminate CO2 emissions. This innovative approach offers a promising solution for the decarbonization of the 'hard-to-abate' metallurgical sector, crucial for achieving a sustainable future. The Mecalo concept's compatibility with existing smelter plants enhances its feasibility for rapid implementation and positive environmental impact.