The process of ferroalloys manufacturing is a complex technological process influenced by factors related to furnace unit energy efficiency, chemical and grain-size composition of feedstock, weighing precision along with a proper input timing and feedstock surface formation, self-baking electrodes forming, cooling of furnace structural elements, carrying the process forward by handling the furnace as well as tapping of molten metal. The key technological challenge of production in electric arc-resistance furnaces is maximisation of energy efficiency of the smelting process. In order to face the challenge, the experienced Re Alloys’ staff, in cooperation with scientists, launched implementation of an R&D project resulting in an upgraded, energy efficient production technology. The objective will be reached thanks to application of a modern energy supply system providing electricity to operating space of furnace hearth, a key element of which is a low-loss bifilar high current circuit.