Abstract:Based on the thinking of energy saving and emission reduction of traditional steelmaking, it is researched to applicate clean energy in the process of steelmaking. The photovoltaic steelmaking concept is introduced with characteristics of photovoltaic effect transformation and offnetwork by the group. The process of the transformation is direct and immediate without any substantial and chemical change. The aim of offnetwork unconnecting with regular power grid is to ensure energy independence of the system. Processes, electrothermal transformatin modes, steelmaking reactors and energy storage forms are evaluated , analysised and integrated by the means of system engineering.. The basic parameters are given after the calculation and designment. 1 kgcapacity photovoltaic steelmaking concept furnace has been designed and manufactured independently. It turns theory into reality as many times steelmaking experiment has been done.