Exhibit 21.1
SUBSIDIARIES OF THE REGISTRANT
As of September 30, 2022
Subsidiary | Jurisdiction of Incorporation | |||||||
Aerial Lighting & Electric, Inc. | Connecticut | |||||||
Azimuth Communications, Inc. | Oregon | |||||||
Bayonet Plumbing, Heating & Air Conditioning, LLC | Florida | |||||||
Calumet Armature and Electric, L.L.C. | Illinois | |||||||
Edmonson Electric, LLC | Florida | |||||||
Freeman Enclosure Systems, LLC | Ohio | |||||||
Hotchkiss Alarms, LLC | Connecticut | |||||||
ICS Holdings LLC | Arizona | |||||||
IES Commercial, Inc. | Delaware | |||||||
IES Communications, LLC | Delaware | |||||||
IES Consolidation, LLC | Delaware | |||||||
IES FL RE, LLC | Florida | |||||||
IES Infrastructure Solutions, LLC | Delaware | |||||||
IES Investments, LLC | Delaware | |||||||
IES Management LP | Texas | |||||||
IES Management ROO, LP | Texas | |||||||
IES OK RE, LLC | Oklahoma | |||||||
IES Operations Group, Inc. | Delaware | |||||||
IES Residential, Inc. | Delaware | |||||||
IES Shared Services, Inc. | Delaware | |||||||
IES Subsidiary Holdings, Inc. | Delaware | |||||||
Integrated Electrical Finance, Inc. | Delaware | |||||||
K.E.P. Electric, Inc. | Ohio | |||||||
Key Electrical Supply, Inc. | Texas | |||||||
Magnetech Industrial Services, Inc. | Indiana | |||||||
NEXT Electric, LLC | Wisconsin | |||||||
Plant Power and Control Systems, L.L.C. | Alabama | |||||||
Southern Industrial Sales and Services, Inc. | Georgia | |||||||
STR Mechanical, LLC | North Carolina | |||||||
Technibus, Inc. | Delaware | |||||||
Technical Services II, LLC | Virginia | |||||||
Thomas Popp & Company | Ohio | |||||||
Wedlake Fabricating, Inc. | Oklahoma |