Aluminum

Aluminum production follows a three-stage transformation: bauxite mining, alumina refining, and electrolytic smelting. Bauxite ore is chemically processed through the Bayer process into alumina, which is then reduced to metallic aluminum through the Hall-Heroult electrolytic process. The defining characteristic of the chain is its extraordinary energy intensity, with smelting requiring roughly 13,000 to 16,000 kilowatt-hours of electricity per tonne of metal, making power cost the single largest determinant of competitive position.

The industry's structure is shaped by energy dependence, geographic concentration of ore deposits, commodity pricing, and high exit barriers. Smelters cluster near low-cost power sources, and shifts in energy economics can permanently alter the competitive landscape. Commodity exchange pricing leaves producers as price-takers, while the capital cost and physical difficulty of restarting idled smelters creates capacity stickiness even when margins turn negative. Red mud waste from alumina refining constrains facility siting and imposes permanent containment obligations.

Scale determines the degree of vertical integration a producer can sustain. Large operators maintain integrated chains from mine to smelter with captive power generation, while mid-size and smaller participants specialize in individual production stages or downstream fabrication. Downstream processing, where primary metal is cast, rolled, and extruded into finished forms, operates under different structural logic emphasizing metallurgical specification control and proximity to manufacturing customers rather than raw energy economics.