1. Abb
2. Autogrid Systems Inc
3. Statkraft
4. Next Kraftwerke
5. Enel X
6. General Electric
7. Hitachi Ltd
8. Flexitricity Limited
9. Ibm Corporation
10. Open Access Technology International Inc
11. Robert Bosch
12. Schneider Electric
13. Siemens
14. Viridity Energy
15. Enbala
16. Tesla