Avista Corp

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

July 7, 2010

SPOKANE, Wash., July 7, 2010 /PRNewswire via COMTEX/ --

Avista Corp. (NYSE: AVA) will hold its quarterly conference call and webcast to discuss second quarter 2010 results on Thursday, Aug. 5, 2010, at 10:30 a.m. Eastern Time. A news release with second quarter 2010 earnings information will be issued at 7:05 a.m. Eastern Time on Aug. 5, 2010.

This call can be accessed at Avista's Web site at www.avistacorp.com, or you may listen to the call by dialing (800) 299.7928 in the United States, Passcode 11076080.

A replay of the call will be available through Aug. 12, 2010. Call (888) 286.8010, Passcode 86624311 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 customers and natural gas to 316,000 customers. Our service territory covers 30,000 square miles in eastern Washington, northern Idaho and parts of southern and eastern Oregon, with a population of 1.5 million. 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,
                 Jason Lang (509) 495.2930,
    Investors:   Jason.lang@avistacorp.com

SOURCE Avista Corp.