Item 7.01 Regulation FD Disclosure.

On December 5, 2012, Robert Rowe, president and chief executive officer; Brian Bird, vice president, chief financial officer and treasurer, and Daniel Rausch, director - investor relations and corporate strategy, of NorthWestern Corporation d/b/a NorthWestern Energy (NYSE: NWE) (the "Company"), will be in New York, at the 2012 Wells Fargo Securities Research and Economics 11th Annual Pipeline, MLP and Energy Symposium, presenting to and conducting one-on-one meetings with analysts, investors, potential investors and other third parties. During these meetings, they will be providing certain information concerning the Company in a slide presentation and will be reaffirming that the Company's adjusted earnings guidance for 2012 is in the range of $2.30 to $2.40 per fully diluted share.

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 incorporated herein 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.

Item 9.01 Financial Statements and Exhibits.

EXHIBIT NO. DESCRIPTION OF DOCUMENT
99.1* Slide presentation dated December 5, 2012

* filed herewith