EX-21.1 2 d270674dex211.htm SUBSIDIARIES OF THE REGISTRANT

Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

As of September 30, 2011

Subsidiary |  | Jurisdiction of Incorporation
IES Residential, Inc. |  | Delaware
ICS Holdings LLC |  | Delaware
IES Commercial, Inc. |  | Delaware
IES Management ROO, LP |  | Texas
IES Management, LP |  | Texas
IES Operations Group, Inc. |  | Delaware
IES Properties, Inc. |  | Delaware
IES Reinsurance, Ltd. |  | Bermuda
Integrated Electrical Finance, Inc. |  | Delaware
Key Electrical Supply, Inc. |  | Texas
Thomas Popp & Company |  | Ohio
IES Tangible Properties, Inc. |  | Delaware
IES Purchasing and Materials, Inc. |  | Delaware
IES Consolidated LLC |  | Delaware
IES Shared Services, Inc. |  | Delaware
IES Commercial & Industrial, LLC |  | Delaware