August 15, 1985
Proposal for a Refinery Included in "Assam Accord" as a part of Government of India's offered economic package
June 23, 1989
IBP Co. Limited Appointed as Implementing Agency (Equity Structure IBP: 51%, Govt. of Assam: 10%, Public: 39%)
May 31, 1991
Environmental Clearance Obtained for Refinery Project
August 28, 1992
EIL Appointed as Prime Consultant
July 3, 1992
Foundation Stone for Refinery Laid by Prime Minister of India Shri P.V. Narasimha Rao
July 15, 1992
CCEA (Cabinet Committee of Economic Affairs) Approval for Implementation of Numaligarh Refinery Project
April 22, 1993
Numaligarh Refinery Limited Incorporated as a Company
June 2, 1995
BPCL Inducted as Major Promoter (Equity Structure BPCL: 32%, IBP: 19%, Govt. of Assam: 10%, Public: 39%)
April, 1999
Numaligarh Refinery Commissioned
July 9, 1999
Numaligarh Refinery Dedicated to the Nation by Prime Minister of India Shri Atal Bihari Vajpayee
October, 2000
Commencement of Commercial Operations
March, 2001
NRL Becomes Subsidiary of BPCL (Equity Structure BPCL: 61.65% ; OIL: 26% Govt. of Assam: 12.35%)
October 22, 2018
Public Investment Board (PIB) Clearance for Refinery Expansion from 3 MMTPA to 9 MMTPA
January 16, 2019
Cabinet Committee of Economic Affairs Approval for Refinery Expansion Project at a Project Cost of Rs. 22,594 Crore
July 27, 2020
Environmental Clearance Obtained for Refinery Expansion Project
March 25, 2021
BPCL Exits NRL as Major Stakeholder. OIL Acquires Majority Shares, Engineers India Limited (EIL) Enters as One of the Shareholders (Equity Structure OIL: 80.16%, Govt. of Assam: 15.47%, EIL: 4.37%)
October 07, 2021
MoPNG Approves Revised Refinery Expansion Project Cost of Rs. 28,026 Crore
January 3, 2022
Share Transfer by OIL to Govt. of Assam Complete (Equity Structure OIL: 69.63%, Govt. of Assam: 26%, EIL: 4.37%)
June 22 & July 04, 2023
Upgradation of NRL from Schedule-B to Schedule-A - (22.06.2023 Click here) | (04.07.2023 Click here)
August 01, 2024
Environmental Clearance Obtained for Poly Propylene Unit. - (Click here)