G&W Electric Company
General Electric Company
ABB Group
Power System Engineering Inc.
Eaton Corporation PLC
Cisco Systems Inc.
Mitsubishi Electric
Landis+Gyr AG
Danaher
S&C Electric Company
Rockwell
Emerson
Siemens AG
Xylem Inc.
Honeywell
Hitachi
Schneider Electric SE
Schweitzer Engineering Laboratories
Yokogawa Electric
Toshiba