1. Bharat Heavy Electricals Limited (BHEL)
2. Siemens Limited
3. Larsen & Toubro (L&T)
4. Kirloskar Oil Engines Limited
5. Cummins India Limited
6. Tata Power
7. Thermax Limited
8. Bhagwan Group
9. Triveni Turbine Limited
10. Waaree Energies