Exhibit 21

Avista Corporation

SUBSIDIARIES OF REGISTRANT

Subsidiary	State or Country of Incorporation
Avista Capital, Inc.	Washington
Advantage IQ, Inc.	Washington
Avista Development, Inc.	Washington
Avista Energy, Inc.	Washington
Avista Northwest Resources, LLC	Washington
Avista Power, LLC	Washington
Avista Turbine Power, Inc.	Washington
Avista Ventures, Inc.	Washington
Pentzer Corporation	Washington
Bay Area Manufacturing, Inc.	Washington
Advanced Manufacturing and Development, Inc.	California
Avista Receivables Corporation	Washington
Avista Capital II	Delaware
Spokane Energy, LLC	Delaware
Steam Plant Square, LLC	Washington
Courtyard Office Center, LLC	Washington
Ecos IQ, Inc.	Washington