One of India's top national oil marketing companies (OMCs), BPCL was formed in 1976 through nationalisation of the the Burmah Shell Oil Storage & Distribution Company of India. With sales of 19.35 million tonnes and a market share of 21.43%, BPCL is today the second largest oil marketing company in the country.

The public sector company GAIL is responsible for the transportation, distribution, processing and marketing of natural gas in India.

Public sector undertaking IOCL is India's largest commercial enterprise and has established itself as a regular both in the Fortune magazine's Global 500 listing of the world's largest corporations and Forbes magazine's International 500 list of largest companies outside the USA.

Oil And Natural Gas Corporation LogoThe public sector giant ONGC is spearheading India's aggressive hunt for crude oil, natural gas and other energy sources. Established in 1956 as the Oil and Natural Gas Commission, it was corporatized as Oil and Natural Gas Corporation Limited on February 1, 1994. Today ONGC, which is fast emerging as an integrated energy transnational, is responsible for the exploration, production and transportation of unprocessed hydrocarbons and accounts for more than 90% of India's oil and gas output (mostly in the Western Offshore Region).