Essar Oil is a prominent subsidiary of the Essar Group, an Indian multinational conglomerate established in 1969. Founded in 1989, Essar Oil focuses on integrated oil services, making a significant impact in the energy sector. The company is involved in exploration, production, refining, and marketing of petroleum products.

Essar Oil operates across the entire oil value chain. It was one of the first private Indian companies to enter the exploration and production sector, holding substantial reserves of oil and gas. The company runs the Vadinar refinery in Gujarat, India, and has interests in the Stanlow refinery in the UK. Additionally, Essar Oil manages a network of around 1,385 petrol stations throughout India, catering to retail customers. Through its subsidiary, Essar Energy, the company also generates power from multiple plants, contributing to its diverse operations.

With a wide range of refined petroleum products, crude oil, natural gas, and electricity, Essar Oil serves various customers, including retail consumers, industrial clients, and international markets. The company plays a vital role in the energy landscape while being part of the larger Essar Group, which has interests in multiple sectors.