Adani said in a statement the project would be launched in Chhattisgarh state, one of India's poorest, where there is an abundant supply of poorer quality coal containing high ash.

It said it would also invest 2 billion rupees in a rice bran solvent extraction plant and a physical refinery packing plant in Chhattisgarh.

Headed by billionaire Gautam Adani, the Adani Group's operations include coal mining, power plants, ports and logistics.

(Reporting by Tommy Wilkes; editing by Jason Neely)