Bauxite for the expanded refinery will come from the region’s Pottangi mines, which hold enough raw materials until 2036. In total, the reserves total 65Mt.

Nalco is also planning a 1Mt/yr alumina refinery in Gujarat and a 500kt/yr smelter and captive power plant in Odisha’s Sundargarh district.

The ultimate aim is for Nalco to have 4.40Mt/yr of alumina production capacity and a corresponding 1.7Mt/yr of aluminium capacity by 2020 – along with 5,000MW of captive power generation.