Avista Corp

Avista Corp. First Quarter 2010 Earnings Conference Call and Webcast Announced

April 9, 2010

SPOKANE, Wash., April 9, 2010 /PRNewswire via COMTEX/ --Avista Corp. (NYSE: AVA) will hold its quarterly conference call and webcast to discuss first quarter 2010 results on Thursday, May 6, 2010, at 10:30 a.m. Eastern Time. A news release with first quarter 2010 earnings information will be issued at 7:05 a.m. Eastern Time on May 6, 2010.

This call can be accessed at Avista's Web site at www.avistacorp.com, or you may listen to the call by dialing (866) 788.0541 in the United States, Passcode 43651583.

A replay of the call will be available through May 13, 2010. Call (888) 286.8010, Passcode 46106281 to listen to the replay. The webcast will be archived for one year on the Avista Corp. Web site at www.avistacorp.com.

Avista Corp. is an energy company involved in the production, transmission and distribution of energy as well as other energy-related businesses. Avista Utilities is our operating division that provides electric service to 356,000 homes and businesses and natural gas service to 316,000 homes and businesses in three Western states, serving more than 485,000 customers. Avista's primary, non-regulated subsidiary is Advantage IQ. Our stock is traded under the ticker symbol "AVA." For more information about Avista, please visit www.avistacorp.com.

Avista Corp. and the Avista Corp. logo are trademarks of Avista Corporation.

    Media:      Avista 24/7 Media Access (509) 495.4174
                Jessie Wuerst (509) 495.8578, jessie.wuerst@avistacorp.com
    Investors:  Jason Lang (509) 495.2930, Jason.lang@avistacorp.com

SOURCE Avista Corp.