Avista Corp

Avista Corp. First Quarter 2011 Earnings Conference Call and Webcast Announced

April 8, 2011

SPOKANE, Wash., April 8, 2011 /PRNewswire via COMTEX/ --

Avista Corp. (NYSE: AVA) will hold its quarterly conference call and webcast to discuss first quarter 2011 results on Friday, May 6, 2011, at 10:30 a.m. Eastern Time. A news release with first quarter 2011 earnings information will be issued at 7:05 a.m. Eastern Time on May 6, 2011.

This call can be accessed at Avista's Web site at www.avistacorp.com, or you may listen to the call by dialing (866) 783.2141 in the United States, Pass code 47720905.

A replay of the call will be available through May 13, 2011. Call (888) 286.8010, Pass code 78542679 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 359,000 customers and natural gas to 319,000 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.

Contact:


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.