Delaware (State or other jurisdiction of incorporation)		1-10499 (Commission File Number)	46-0172280 (IRS Employer Identification No.)
3010 W. 69^th Street Sioux Falls, South Dakota (Address of principal executive offices)			57108 (Zip Code)
	(605) 978-2900 (Registrant’s telephone number, including area code)

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 (see General Instruction A.2. below):

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

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

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

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

On May 21, 2008 at 10:00 a.m. Eastern Daylight Time, NorthWestern Corporation (NYSE: NWE) (the “Company”) will hold its annual meeting of stockholders at the Downtown Marriott Hotel in New York City. During the annual meeting, Michael J. Hanson, president and chief executive officer of the Company will make a presentation to stockholders and other attendees that will discuss the operations of the business. A live webcast of the annual meeting can be accessed from the Company’s Web site at http://www.northwesternenergy.com under the Investor Information heading.

A copy of the slide presentation is being furnished pursuant to Regulation FD as Exhibit 99.1 to this Current Report on Form 8-K and is herein incorporated by reference. The information in the slide presentation shall not be deemed to be “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section. Furthermore, the slide presentation shall not be deemed to be incorporated by reference into the Company’s filings under the Securities Act of 1933, as amended, or under the Securities Exchange Act of 1934, as amended, except as set forth with respect thereto in any such filing.

EXHIBIT NO.	DESCRIPTION OF DOCUMENT
99.1*	Slide presentation dated May 21, 2008

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 hereunto duly authorized.

		NORTHWESTERN CORPORATION

	By:	/s/ Miggie E. Cramblit
		Miggie E. Cramblit
		Vice President, General Counsel and Corporate Secretary

EXHIBIT NO.	DESCRIPTION OF DOCUMENT
99.1*	Slide presentation dated May 21, 2008