IOC and CPCL will hold a 25% stake each in the joint venture that will set up the 9 million tonne per year refinery. The remaining 50% equity would be with financial investors, the Chairman told media sources.

CPCL also plans to build a 475,000 tonne per annum capacity petrochemical plant. A detailed feasibility report for the expansion project is underway.

Formerly known as Madras Refineries Ltd, CPCL was formed as a joint venture in 1965 between the Government of India, AMOCO, and the National Iranian Oil Corporation (NIOC) having a shareholding in the ratio of 74%, 13%, and 13% respectively.