in production in 2018 Electricity transmission and distribution – Efficient management of investment resources – Seamlessly connecting new capacity to the grid Primary aluminium and value added products Aluminium is produced through the process of electrolysis, where electricity is run between a negative cathode and a positive anode (both made of carbon), which reacts with the oxygen in alumina and forms CO₂. Liquid aluminium is cast into extrusion ingots, sheet ingots, or foundry alloys, depending on the intended final product.