On October 22, 2009, Black Hills Power, Inc. (the "Company"), a direct, wholly-owned subsidiary of Black Hills Corporation, entered into an underwriting agreement (the "Underwriting Agreement") with RBC Capital Markets Corporation, RBS Securities Inc. and Scotia Capital (USA) Inc., acting for themselves and as representatives of the several underwriters named in Schedule A to the Underwriting Agreement, in connection with an underwritten public offering (the "Offering") of $180 million aggregate principal amount of the Company's first mortgage bonds, 6.125% Series AF due 2039 (the "Bonds"). The Bonds have been registered under the Securities Act of 1933, as amended, pursuant to the Company's registration statement (File No. 333-150669-01) (the "Registration Statement"). The closing of the Offering is expected to occur on October 27, 2009, subject to satisfaction of customary closing conditions.

The Company intends to use the net proceeds of the Offering to pay the amount of all principal and interest outstanding under its Utility Money Pool Agreement with Black Hills Corporation, Cheyenne Light, Fuel and Power Company and Black Hills Utility Holdings, Inc. (the "Utility Money Pool Agreement"), pursuant to which the Company has borrowed approximately $103.3 million from Black Hills Corporation, at a variable interest rate which was 0.95% at September 30, 2009, to fund certain project costs for the construction of Wygen III, a 110 megawatt coal-fired base load electric generation facility located near Gillette, Wyoming, which is expected to become operational in mid-2010. The Company expects to use approximately $27 million of the net proceeds to pay its share of the remaining total project cost for the construction of Wygen III. The expected total cost of construction is approximately $255 million, which includes estimates of allowances for funds used during construction. In April 2009, the Company sold a 25% ownership interest in Wygen III to MDU Resources Group, Inc. and the Company expects to retain ownership of a majority of the facility's capacity. The Company expects to use approximately $30 million of the net proceeds to repay its Series AC, 8.06% first mortgage bonds upon their maturity in February 2010. Black Hills Corporation expects to use the funds received from the Company upon repayment by the Company of the $103.3 million owed under the Utility Money Pool Agreement to pay down outstanding borrowings owed by Black Hills Corporation under its unsecured revolving credit facility. Borrowings under Black Hills Corporation's unsecured revolving credit facility accrue interest at a variable interest rate which was 0.95% at September 30, 2009.

The Underwriting Agreement is included in this Current Report on Form 8-K as Exhibit 1 hereto and is incorporated by reference into this Item 1.01 as though fully set forth herein.

This Current Report on Form 8-K shall not constitute an offer to sell or a solicitation of an offer to buy the securities described herein, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. The Offering is being made only by means of a prospectus and related prospectus supplement.

The Company is offering and selling the Bonds under the Registration Statement and accompanying prospectus and prospectus supplement, which Registration Statement relates to the offer and sale on a delayed basis from time to time of an indeterminate amount of the Company's first mortgage bonds. This Current Report on Form 8-K is being filed in connection with the offer and sale of the Bonds as described herein. A copy of the Press Release announcing the pricing of the Bonds is attached as Exhibit 99 hereto.

(d) Exhibits.

The Registrant files the following exhibits as part of this report:

Exhibit 1*   Underwriting Agreement dated October 22, 2009, among the Company and
             RBC Capital Markets Corporation, RBS Securities Inc. and Scotia
             Capital (USA) Inc., acting for themselves and as representatives of
             the several underwriters.

Exhibit 4*   Second Supplemental Indenture dated as of October 27, 2009, between
             the Company and The Bank of New York Mellon, as Trustee.

Exhibit 99   Press Release, dated October 22, 2009.