1. Aclara Technologies Llc (Acquired By Hubbel Incorporated)
2. Arad Group
3. Electsolve Technology Solutions & Services Inc.
4. Elster Solutions (Acquired By Honeywell International Inc.)
5. Enoro Ab (Acquired By Hansen Technologies)
6. Itron Inc.
7. Landis+Gyr Group
8. Oracle Utilities (Opower)
9. Siemens Ag
10. Trilliant Holdings
11. Eaton Corporation
12. Diehl
13. Schneider Electric
14. Kamstrup
15. Sensus (Xylem)