IOCL plans to expand the capacity of its Digboi refinery from 0.65 mtpa to 1 mtpa. According to the Ministry of Petroleum and Natural Gas, the configuration study is expected to be completed by January 2022, followed by first-stage investment approval by March 2022. IOCL also has plans to further increase the capacity of the Duliajan-Digboi crude pipeline capacity from 0.65 mtpa to 1 mtpa, so as to meet the increased output from the Digboi refinery. Furthermore, IOCL intends to increase the capacity of the Guwahati refinery from 1 mtpa to 1.2 mtpa and commission it by October 2023.