ONGC arm Imperial Energy to merge 5 subsidiaries with itself, save ₹2 crore per yearCNBC-TV18 • 3 months agoONCG merger: The rationale behind this amalgamation is to mitigate administrative costs, estimated at approximately $0.24 million per year (equivalent to ₹2 crore per year), primarily attributed to accounting and audit, statutory payments, and taxes.