1. Caterpillar India
2. Wartsila India Ltd.
3. Cummins India Ltd.
4. Siemens Energy India
5. Yanmar Engine Manufacturing India Pvt. Ltd.
6. Mitsubishi Heavy Industries India Private Limited
7. Baudouin India
8. Green Power International Pvt. Ltd.
9. Cooper Corp.
10. Chroma Power Systems India Private Limited