IOC Indian Oil Corporation Ltd Expansion Plans Announcement 2025 - Cost Revision Indian Oil Corporation has revised the project cost for the expansion of its Barauni Refinery in Bihar from Rs. 13,779 crore to Rs. 16,724 crore as of April 30, 2025, due to increased costs in Plant & Machinery..Find Corporate Announcements for Press Releases, AGM, Insider Trading & SAST, Results and Corporate Action for Indian Oil Corporation Ltd