EX-21.1 4 d445563dex211.htm EX-21.1 EX-21.1

Exhibit 21.1

Subsidiaries of ADA-ES, Inc.

 

Name

    State of Organization

ADA Environmental Solutions, LLC

    Colorado

ADA Intellectual Property, LLC

    Colorado

Advanced Emissions Solutions, Inc.

    Delaware

Clean Coal Solutions, LLC

    Colorado

BCSI, LLC

    Delaware

 

* Each subsidiary does business under its chartered name.