OIL & GAS
| Corona Energy | CPL Energy India Pvt. Ltd. | Gail (India) Ltd |
| HPCL – Mittal Energy Ltd. | Nayara Energy Limited | ONGC |
PETROCHEMICALS
| BC. Petro Chem | Bengal Cracker Complex Limited | Brahmaputra Cracker & Polymer Ltd |
| Chemical & Petrochemical Industries | Daxesh Petrochem Pvt Ltd | Haldia Petrochemicals Ltd. |
| National Petrochemical Ltd. | Raghav Polymers India Pvt. Ltd |
REFINERIES / NUCLEAR POWER PLANTS
| Costal Gujarat Power Ltd | CPL Energy India Pvt. Ltd. | Genting Lanco Power (India) Private Limited |
| GSPC Pipavav Power Company Limited | Indian Oil Corporation Limited | Neptunus Power Plant Services Pvt Ltd |
| Nuclear Power Corporation of India Ltd |