EX-21 4 exhibit21_1.htm EXHIBIT 21.1

Exhibit 21.1

Exhibit 21.1

SUBSIDIARIES OF POWELL INDUSTRIES, INC.

Name of Domestic Subsidiary

Powell Electrical Systems, Inc.
Transdyn, Inc
Powell Industries International, Inc.
     Powell Industries China, Inc.
     Powell Industries Asia, Inc.
Powell-ESCO Company
Powell Energy Systems, Inc. (Inactive)
Transdyn Controls, Inc. State of Incorporation

Delaware
Delaware
Delaware
Delaware
Delaware
Texas
Nevada
California