SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Thoren Diane C (Last) (First) (Middle) 1411 E. MISSION AVENUE (Street) SPOKANE WA 99202 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 06/12/2009	3. Issuer Name and Ticker or Trading Symbol AVISTA CORP [ AVA ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Treasurer	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	1,547	D
Common Stock held in 401(k) Investment Plan	4,024	I	by Trustee
Common Stock held in Executive Deferral Plan	944	I	by Trustee
Common Stock held in Custodial Account for Grandson	36	I	by Grandson Zachary Brown
Common Stock held in Custodial Account for Niece	56	I	by Niece Meagan Cuthill
Common Stock held in Custodial Account for Niece	36	I	by Niece Katherine Cuthill
Common Stock held in Custodial Account for Niece	12	I	by Niece McIntyre Cuthill
Common Stock held in Custodial Account for Granddaughter	22	I	by Granddaughter McKenzie Brown
Common Stock held in Custodial Account for Grandson	13	I	by Grandson Colton Materne
Common Stock held in Custodial Account for Granddaughter	6	I	by Granddaughter Avery Materne

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
2000 Stock Option Grant	11/09/2004(1)	11/09/2010	Common Stock	2,400	22.54	D
2001 Stock Option Grant	11/08/2005(1)	11/08/2011	Common Stock	5,200	11.8	D
2002 Stock Option Grant	11/07/2006(1)	11/07/2012	Common Stock	2,700	10.17	D
2007 Performance Share Grant	(2)	(2)	Common Stock	370	(3)	D
2008 Performance Share Grant	(2)	(2)	Common Stock	800	(3)	D
2009 Performance Share Grant	(2)	(2)	Common Stock	800	(3)	D

Explanation of Responses:

1. Grant vests 25% each year beginning one year following date of grant. Grant is 100% vested four years following date of grant.

2. Each performance cycle is three years in length. Shares will be issued at the end of each three-year cycle if performance is met.

3. No conversion price. Shares awarded if performance measure is met.

	/s/ Diane C. Thoren	06/19/2009
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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