Vedanta Aluminium said it has expanded its annual alumina refining capacity to 3.5 million tonnes at its Lanjigarh unit in Odisha.

The alumina refining capacity earlier was 2 million tonnes per annum (MTPA), the company said in a statement.

It plans to further increase alumina refining capacity to 5 MTPA, besides increasing aluminium production capacity to 3 MTPA from 2.37 MTPA at present, the Vedanta Group company said.

Vedanta Aluminium CEO John Slaven said: "We expanded the capacity, which strengthens our raw material security and reduces costs for our Jharsuguda and BALCO aluminium smelters. It is a significant step towards 100 per cent vertical integration and strongly positions us for sustainable growth within the global aluminium market.