M/s. Oil & Natural Gas Corporation Ltd. (ONGC)

1. ONGC Ltd. Mumbai

    Offshore Process Platforms

1. ONGC, Ankleshwar

    CPF, Gandhar
    Group Gathering Stations,

1. ONGC, Hazira
2. ONGC, Ahmedabad Project
3. ONGC, Mehsana

M/s. Reliance Industries Ltd. (R I L)

1. R I L., Hazira
2. R I L., Jamnagar

M/s. GAIL (INDIA)Ltd.,

1. GAIL, Vijaypur
2. GAIL, Agra
3. GAIL, Jhabua
4. GAIL, Baroda
5. GAIL,Gandhar
6. GAIL, Hazira

M/s.Essar Steel Ltd.,

1. ESSAR STEEL I, Hazira
2. ESSAR STEEL II, Hazira

M/s.Essar Power Ltd.

1. ESSAR POWER Ltd.,Hazira

M/s. Essar Oil Ltd.,

1. Essar Oil Ltd., Jamnagar

M/s. Krishak Bharati  Co-Operative Ltd.,

1. KRIBHCO, Hazira
2. KRIBHCO, HAEP,Hazira

M/s. Indian Farmers Fertilizers    
Co-Operative Ltd.,

1. IFFCO, Kalol

M/s.Gujarat Gas Company Ltd.,

1. GGCL, Ankleshwar
2. GGCL, Surat

M/s.NIKO Resources Ltd.

1. Hazira, Surat

M/s.Cairn Energy (I) Pvt.Ltd.

1. Hazira, Surat

M/s. Indian Oil Corporation Ltd.

1. IOCL, Hazira Bottling Plant
2. IOCL, Gandhar

Gujarat State Petronet Ltd,

1. GSPL, Hazira Terminals

M/s.Gujarat Alkalies & Chemicals Ltd.,

1. GACL, Dahej

M/s. Process Control Technology (India) Pvt. Ltd.

1. Thane, Mumbai

M/s. Pandesara Dyes & Intermediates Ltd.,

1. Pandesara, Surat