EX-21 2 esoa-20250930xex21.htm EX-21

Exhibit 21

Subsidiaries of Energy Services of American Corporation

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Name | ​ ​ ​ | State of Incorporation
​ | ​ | ​
West Virginia Pipeline, Inc. | ​ | West Virginia (direct)
​ | ​ | ​
SQP Construction Group, Inc. | ​ | West Virginia (direct)
​ | ​ | ​
Tri-State Paving & Sealcoating, Inc. | ​ | West Virginia (direct)
​ | ​ | ​
Ryan Construction Services, Inc. | ​ | West Virginia (direct)
​ | ​ | ​
Tribute Acquisition Company, Inc. | ​ | Ohio (direct)
​ | ​ | ​
C.J. Hughes Construction Company, Inc. | ​ | West Virginia (direct)
​ | ​ | ​
Contractors Rental Company, Inc. (1) | ​ | West Virginia (indirect)
​ | ​ | ​
Nitro Construction Service, Inc. (1) | ​ | West Virginia (indirect)
​ | ​ | ​
Nitro Electric Company, LLC (2) | ​ | Michigan (indirect)
​ | ​ | ​
Pinnacle Technical Solutions, Inc. (2) | ​ | West Virginia (indirect)

(1) | Subsidiary of C.J. Hughes Construction Company, Inc.

(2) | Subsidiary of Nitro Construction Services, Inc.