- Business
- Oil and Natural Gas Corporation Limited (ONGC) is India's largest producer of crude oil and natural gas, contributing around 71% of the country's domestic crude oil production and 84% of its natural gas output; the Maharatna public sector undertaking explores, develops, and produces hydrocarbons through onshore and offshore operations across 11 domestic assets and 7 exploratory basins, supplies crude oil, natural gas, and value-added products to major refiners including subsidiaries HPCL and MRPL, and provides integrated oilfield services such as drilling, geophysical logging, and well services. ONGC offers additional capabilities in coal bed methane, shale gas exploration, petrochemicals via subsidiary ONGC Petro-additions Limited (OPaL) producing polymers and chemicals, power generation through gas-based plants, pipeline transportation networks exceeding 25,500 kilometers, and emerging renewables including solar installations totaling 36 megawatts and wind capacity of 154 megawatts as of early 2023. Wholly-owned subsidiary ONGC Videsh operates 35 oil and gas assets in 15 countries including Azerbaijan, Russia, Brazil, Colombia, and Mozambique, while other subsidiaries like Mangalore Refinery and Petrochemicals Limited process 15 million metric tons per annum of crude into fuels and petrochemicals such as para-xylene and benzene. Founded in 1956 and headquartered in New Delhi, India, ONGC conducts primary operations domestically with significant international presence and targets energy security through its fully integrated hydrocarbon value chain. In recent developments, ONGC plans a Rs 4,600 crore investment in the KG Basin offshore expansion including new wells and platforms to boost East Coast output; ONGC Green Limited, formed to meet net-zero targets by 2038, acquired PTC Energy adding 289 megawatts of wind power and, through a joint venture with NTPC, purchased Ayana Renewable Power in March 2025 expanding its renewable portfolio to 2.5 gigawatts; the company increased its stake in OPaL to over 95% with Rs 183 billion additional investment, partnered with Powergrid in December 2024 and BHEL in January 2025 for green hydrogen, signed with Tata Power in February 2025 for battery storage, and pursued critical minerals via an MoU with UAE's International Resources Holding alongside overseas interests in Azerbaijan's ACG field and Baku-Tbilisi-Ceyhan pipeline.