Exhibit 21.1
SUBSIDIARIES OF THE REGISTRANT
As of September 30, 2018
Subsidiary | Jurisdiction of Incorporation | |||
Azimuth Communications, Inc. | Oregon | |||
Calumet Armature and Electric, L.L.C. Freeman Enclosure Systems, LLC HK Engine Components, LLC ICS Holdings LLC IES Commercial, Inc. IES Communications, LLC IES Consolidation, LLC IES Infrastructure Solutions, LLC IES Management, LP IES Management ROO, LP IES Operations Group, Inc. IES Properties, Inc. IES Purchasing & Materials, Inc. IES Renewable Energy, LLC IES Residential, Inc. IES Shared Services, Inc. IES Subsidiary Holdings, Inc. IES Tangible Properties, Inc. | Illinois Ohio Indiana Arizona Delaware Delaware Delaware Delaware Texas Texas Delaware Delaware Delaware Delaware Delaware Delaware Delaware Delaware | |||
Integrated Electrical Finance, Inc. | Delaware | |||
Key Electrical Supply, Inc. | Texas | |||
Magnetech Industrial Services, Inc. | Indiana | |||
NEXT Electric, LLC Shanahan Mechanical and Electrical, Inc. Southern Industrial Sales and Services, Inc. STR Mechanical, LLC Technibus, Inc. Technical Services II, LLC | Wisconsin Nebraska Georgia North Carolina Delaware Virginia | |||
Thomas Popp & Company | Ohio |
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