ΣIDERWIN project proposes to develop a breakthrough innovation compared to the present-day steel production process by applying electrochemical technique to iron metal production. The electrolysis process using renewable energies will transform any iron oxide, including those inside the by-products from other metallurgies, into steel plate with a significant reduction of energy use. This process decomposes under mild conditions but at intense reaction rate naturally occurring iron oxides such as hematite into iron metal and oxygen gas. By developing a low-CO2 steel production process, the project could contribute to the reduction of the total greenhouse gas emissions. Compared to traditional steelmaking plants, this innovative technology has several positive impacts such as: a reduction by 87% of the direct CO2 emissions; a reduction by 31% of the direct energy use; the ability to produce steel from by-products rich in iron oxides from non-ferrous metallurgy residues; an increased integration with renewable energies with a more flexible process.