Indian Oil Corporation Limited announced that at the board meeting held on June 28, 2022, the company has accorded investment approval for capacity expansion of Digboi Refinery in Assam from 0.65 MMTPA to 1 MMTPA along with associated facilities at an estimated cost of INR 7,402 million. The project is expected to be commissioned by October 2025. The capacity expansion would improve the profitability of the Digboi Refinery.