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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;border-bottom:solid 2.25pt;padding-bottom:1;padding-top:0;'><font size=5>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=5>UNITED STATES</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=5>SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Washington, D.C. 20549</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>___________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=3>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=5>FORM 8-K</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>____________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=3>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=2>CURRENT REPORT</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>PURSUANT TO SECTION 13 OR 15(d) OF THE</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=2>SECURITIES EXCHANGE ACT OF 1934</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=3>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Date of Report (Date of earliest event reported) February 14, 2007</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>____________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=3>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font SIZE=5>BLACK HILLS CORPORATION</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>(Exact name of registrant as specified in its charter)</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>____________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=3>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="93%" style='margin-left:23.4pt;border-collapse:collapse'>
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        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>South Dakota</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(State or other jurisdiction of incorporation)</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>001-31303</font></b><b></b></p> </td>
        <td width="72" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>46-0458824</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Commission File Number)</font></b><b></b></p> </td>
        <td width="72" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(IRS Employer Identification No.)</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td width="72" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td> </tr>
    <tr >
        <td  colspan="2" rowspan=2 valign=top style='padding: 0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>625 Ninth Street, PO Box 1400</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Rapid City, South Dakota</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Address of principal executive offices)</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td width="72" rowspan=2 valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>57709-1400</font></b></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Zip Code)</font></b><b></b></p> </td> </tr>
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        <td  colspan="2" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>605.721.1700</font></b><b></b></p> </td> </tr>
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        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Registrant&#146;s telephone number, including area code)</font></b><b></b></p> </td> </tr>
    <tr >
        <td width="162" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td  colspan="3" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td>
        <td width="186" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b>&nbsp;</b></p> </td> </tr>
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        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Not Applicable</font></b><b></b></p> </td> </tr>
    <tr >
        <td  colspan="5" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:center;margin-top:0pt;margin-bottom:0pt'><b><font size=2>(Former name or former address, if changed since last report)</font></b><b></b></p> </td> </tr>
    <tr>
        <td width="162" ></td>

        <td width="102" ></td>

        <td width="72" ></td>

        <td width="72" ></td>

        <td width="186" ></td> </tr> </table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=3>____________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>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 (</font><i><font size=2>see</font></i><font size=2> General Instruction A.2. below):</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>&#144;</font></b></p> </td>
        <td width="595" style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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        <td width="30" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>&#144;</font></b></p> </td>
        <td width="595" style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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        <td width="30" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>&#144;</font></b></p> </td>
        <td width="595" style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
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        <td width="30" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>&#144;</font></b></p> </td>
        <td width="595" style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</font></p>
<p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><b><font size=2>______________________________________________________________________________</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>1</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
<HR noshade align="center" width="100%" size="2">
<p style='page-break-before:always'></p>
<pAGE>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item 1.01</font></b></p> </td>
        <td width="320" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Entry into a Material Definitive Agreement.</font></b></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>The disclosure set forth in Item 3.02 of this Form 8-K is incorporated herein by reference.</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item 3.02</font></b></p> </td>
        <td width="291" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Unregistered Sales of Equity Securities.</font></b></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>On February 14, 2007, Black Hills Corporation (the &#147;Company&#148;) accepted commitments from certain institutional investors to purchase 4,170,891 shares of the Company&#146;s Common Stock, par value $1.00 per share, at a purchase price of $36.00 per share in a private offering exempt under Section 4(2) of the Securities Act of 1933 from the registration requirements of that Act.  Aggregate gross proceeds will total $150,152,076.  Credit Suisse and BMO Capital Markets acted as placement agents in connection with the transaction and will receive a placement agent fee equal to 3 percent of the gross proceeds received by the Company, or approximately $4.5 million.  The Company will use the net proceeds from this offering for debt reduction.  The transaction is expected to close by February 22, 2007.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>The shares of Common Stock to be sold have not been registered under the Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements.  This Form 8-K does not constitute an offer to sell or the solicitation of an offer to buy in any jurisdiction.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>A copy of the press release announcing the private placement of Common Stock is filed herewith as Exhibit 99 to this report and is incorporated herein by reference.  </font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.5in;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Item 9.01</font></b></p> </td>
        <td width="259" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><b><font size=2>Financial Statements and Exhibits.</font></b></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>(c)</font></p> </td>
        <td width="76" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Exhibits.  </font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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        <td width="144" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><u><font size=2>Exhibit Number</font></u></p> </td>
        <td width="137" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><u><font size=2>Title of Document</font></u></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>99</font></p> </td>
        <td width="267" valign=top >
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Press Release dated February 14, 2007</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>2</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
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<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><u><font SIZE=2>SIGNATURES</font></u></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt; text-indent:0.3in;text-align:left;'><font size=2>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.</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font SIZE=2>BLACK HILLS CORPORATION</font></p> </td> </tr>
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            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
    <tr >
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
    <tr >
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>By:&nbsp;</font><u><font size=2>  /s/ Mark T. Thies            </font></u>                                   </p> </td> </tr>
    <tr >
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:15.0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:21.0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Mark T. Thies</font></p> </td> </tr>
    <tr >
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:21.75pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Executive Vice President</font></p> </td> </tr>
    <tr >
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:26.25pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>and Chief Financial Officer</font></p> </td> </tr>
    <tr >
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
    <tr >
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Date:&nbsp;&nbsp;February 15, 2007</font></p> </td>
        <td width="319" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'>
</p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>3</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>
<br>
<HR noshade align="center" width="100%" size="2">
<p style='page-break-before:always'></p>
<pAGE>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><b><font size=2>Exhibit Index</font></b></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>


<table border="0" cellspacing=0 cellpadding=0 width="583" style='margin-left:41.4pt;border-collapse:collapse'>
    <tr >
        <td width="138" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><u><font size=2>Exhibit Number</font></u><b></b></p> </td>
        <td width="445" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><u><font size=2>Title of Document</font></u><b></b></p> </td> </tr>
    <tr >
        <td width="138" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td>
        <td width="445" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=1>&nbsp;</font></p> </td> </tr>
    <tr >
        <td width="138" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:26.25pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>99</font><b></b></p> </td>
        <td width="445" valign=top style='padding:0in 5.4pt 0in 5.4pt'>
            <p style='margin-left:0pt;text-indent:0pt;text-align:left;margin-top:0pt;margin-bottom:0pt'><font size=2>Press Release dated February 14, 2007</font></p> </td> </tr></table>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:center;'><font size=2>4</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>

<p style=' margin-bottom:0pt; margin-top:0pt;text-align:left;'><font size=2>&nbsp;</font></p>


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{"company-data": {"conformed-name": "BLACK HILLS CORP /SD/", "cik": "0001130464", "assigned-sic": "4911", "irs-number": "460458824", "state-of-incorporation": "SD", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-31303", "film-number": "07627039"}, "business-address": {"street1": "625 9TH STREET", "street2": "PO BOX 1400", "city": "RAPID CITY", "state": "SD", "zip": "57709", "phone": "6057212343"}, "mail-address": {"street1": "625 9TH STREET", "street2": "PO BOX 1400", "city": "RAPID", "state": "SD", "zip": "57709"}, "former-company": {"former-conformed-name": "BLACK HILLS HOLDING CORP", "date-changed": "20001222"}}
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) February 14, 2007
____________
BLACK HILLS CORPORATION
(Exact name of registrant as specified in its charter)
____________
South Dakota
(State or other jurisdiction of incorporation)
001-31303
46-0458824
(Commission File Number)
(IRS Employer Identification No.)
625 Ninth Street, PO Box 1400
Rapid City, South Dakota
(Address of principal executive offices)
57709-1400
(Zip Code)
605.721.1700
(Registrant's telephone number, including area code)
Not Applicable
(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 (
see
General Instruction A.2. below):

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))
______________________________________________________________________________
1
Item 1.01
Entry into a Material Definitive Agreement.
The disclosure set forth in Item 3.02 of this Form 8-K is incorporated herein by reference.
Item 3.02
Unregistered Sales of Equity Securities.
On February 14, 2007, Black Hills Corporation (the "Company") accepted commitments from certain institutional investors to purchase 4,170,891 shares of the Company's Common Stock, par value $1.00 per share, at a purchase price of $36.00 per share in a private offering exempt under Section 4(2) of the Securities Act of 1933 from the registration requirements of that Act.  Aggregate gross proceeds will total $150,152,076.  Credit Suisse and BMO Capital Markets acted as placement agents in connection with the transaction and will receive a placement agent fee equal to 3 percent of the gross proceeds received by the Company, or approximately $4.5 million.  The Company will use the net proceeds from this offering for debt reduction.  The transaction is expected to close by February 22, 2007.
The shares of Common Stock to be sold have not been registered under the Securities Act of 1933, as amended, and may not be offered or sold in the United States absent registration or an applicable exemption from registration requirements.  This Form 8-K does not constitute an offer to sell or the solicitation of an offer to buy in any jurisdiction.
A copy of the press release announcing the private placement of Common Stock is filed herewith as Exhibit 99 to this report and is incorporated herein by reference.
Item 9.01
Financial Statements and Exhibits.
(c)
Exhibits.
Exhibit Number
Title of Document
99
Press Release dated February 14, 2007
2
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 hereunto duly authorized.
BLACK HILLS CORPORATION
By:
/s/ Mark T. Thies
Mark T. Thies
Executive Vice President
and Chief Financial Officer
Date:  February 15, 2007
3
Exhibit Index
Exhibit Number
Title of Document
99
Press Release dated February 14, 2007
4