Exhibit 21.1

Subsidiaries of ADA-ES, Inc

Name*	State of Organization
ADA Environmental Solutions, LLC	Colorado
ADA Carbon Solutions, LLC	Delaware
Clean Coal Solutions, LLC	Colorado
Crowfoot Supply Company LLC	Delaware
Morton Environmental Products, LLC	Delaware
Red River Environmental Products, LLC	Delaware
Underwood Environmental Products, LLC	Delaware
Five Forks Mining, LLC	Delaware

* Each subsidiary does business under its chartered name.