EX-21.1 3 exhibit211-subsidiariesofa.htm EXHIBIT 21.1 Exhibit
Subsidiaries of Advanced Emissions Solutions, Inc.

Entity Name
State or Country of Organization
ADA Analytics Israel Ltd.
Israel
ADA Analytics, LLC
Delaware
ADA Environmental Solutions, LLC
Colorado
ADA-ES Intellectual Property, LLC
Colorado
ADA-ES, Inc.
Colorado
ADEquity, LLC
Delaware
Advanced Clean Energy Solutions, LLC
Delaware
BCSI, LLC
Delaware

Each subsidiary does business under its chartered name.