ONGC subsidiary HPCL is a Maharatna CPSE. HPCL has the second largest share of product pipelines in India with a pipeline network of 5134 kms for transportation of petroleum products and a vast marketing network consisting of 19 Zonal offices in major cities and 145 Regional Offices facilitated by a Supply & Distribution infrastructure comprising Terminals, Pipeline networks, Aviation Service Stations, LPG Bottling Plants, Inland Relay Depots & Retail Outlets, Lube and LPG Distributorships. Consistent excellent performance has been made possible by highly motivated workforce of over 8,000 employees working all over India at its various refining and marketing locations.

HPCL owns & operates 2 major refineries producing a wide variety of petroleum fuels & specialties, one in Mumbai (West Coast) of 9.5 Million Metric Tonnes Per Annum (MMTPA) capacity and the other in Visakhapatnam, (East Coast) with a capacity of 15.0 MMTPA. HPCL also owns and operates the largest Lube Refinery in the country producing Lube Base Oils of international standards, with a capacity of 428 TMT. This Lube Refinery accounts for over 40% of the India's total Lube Base Oil production.

JVs & Subsidiaries: HPCL business operations extend through subsidiaries and joint venture companies, strategically covering key areas of business. In total there are 21 Partnerships across key business areas.