UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): August 16, 2006

AVISTA CORPORATION

(Exact name of registrant as specified in its charter)

Washington	1-3701	91-0462470
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

1411 East Mission Avenue, Spokane, Washington	99202-2600
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: 509-489-0500

Web site: http://www.avistacorp.com

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Section 5 – Corporate Governance and Management

Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year.

On August 16, 2006, the Bylaws of Avista Corporation were amended. A complete copy of the Bylaws of Avista Corporation, as amended August 16, 2006, is filed as exhibit 3(ii).

Specifically, section 2 of Article III of the Bylaws of Avista Corporation has been changed with respect to the number of directors of the Corporation. Section 2 of Article III, which previously stated that “the number of directors of the Corporation shall be eleven,” has been amended to state “the number of directors of the Corporation shall be no more than eleven.”

Section 9 – Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

3 (ii) Bylaws of Avista Corporation, as amended August 16, 2006.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	AVISTA CORPORATION
	(Registrant)
Date: August 21, 2006	/s/ Malyn K. Malquist
	Malyn K. Malquist
	Executive Vice President and Chief Financial Officer