Nalco is likely to invest more than Rs 33,000 crore in a host of sectors including energy to boost its productivity and profitability in the next three to four years.

The proposed plan includes expansion - both brownfield and greenfield, diversification into energy and non-ferrous metal sectors, backward integration, merger and acquisition.

The company is planning to set up a Rs 5,500 crore greenfield project of alumina refinery in Gujarat with one million tpa capacity. The preparation of a detailed project report for this has begun.

Similarly, the company is also planning a Rs 16,450 crore smelter of 0.5 million tpa capacity and power plant of 1,260 MW capacity in Sundargarh district of Orissa for which approval of the high level clearance authority of the state government has been obtained. Site selection study and preliminary land survey for the proposed project is underway and the company is actively pursuing allocation of coal block in this regard.

Under the energy sector, the company formed a JV with Nuclear Power Corporation of India (NPCIL), to set up nuclear power plants.

For renewable energy sources, Nalco has entered into a new business of wind power generation with the establishment of a 50.4 MW wind power plant at Gandikota in Andhra Pradesh at an investment of Rs 274 crore. The second wind power plant of 47.6 MW is being set up in Rajasthan with an investment of Rs 283 crore. Another plant has been planned in Nalco's own mined out area at Panchpatmali in Koraput district of Orissa.