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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="right"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Registration
      No.
      333-________</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">UNITED
      STATES</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">SECURITIES
      AND
      EXCHANGE COMMISSION</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Washington,
      D.C.&#160;&#160;20549</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">______________________</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">FORM
      S-8</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">REGISTRATION
      STATEMENT</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Under</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">THE
      SECURITIES ACT
      OF 1933</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">______________________</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td colspan="6" valign="top" width="88%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 49.5pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">INTEGRYS
                ENERGY GROUP, INC.</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 49.5pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">(Exact
                name
                of Registrant as specified in its charter)</font></div>
            </td>
          </tr>
          <tr>
            <td colspan="3" valign="top" width="47%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 36pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Wisconsin</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 36pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">(State
                or
                other jurisdiction of</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 36pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">incorporation
                or organization)</font></div>
            </td>
            <td colspan="3" valign="middle" width="41%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 49.5pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">39-1775292</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 49.5pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">(I.R.S.
                Employer</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 49.5pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Identification
                No.)</font></div>
            </td>
          </tr>
          <tr>
            <td colspan="5" valign="top" width="88%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 48.6pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">130
                East Randolph Drive</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 48.6pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Chicago,
                Illinois&#160;&#160;60601</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 48.6pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">(Address
                of
                principal executive offices)</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td valign="top" width="1%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr>
            <td colspan="5" valign="top" width="88%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 48.6pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Integrys
                Energy Group, Inc. Deferred Compensation Plan</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 48.6pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">(Full
                title
                of the plan)</font></div>
            </td>
            <td valign="top" width="1%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr>
            <td valign="top" width="27%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td colspan="3" valign="top" width="27%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td valign="top" width="35%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td valign="top" width="1%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr>
            <td colspan="2" valign="top" width="40%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Larry
                L. Weyers</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">President
                and Chief Executive Officer</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Integrys
                Energy Group, Inc.</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">130
                East Randolph Drive</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Chicago,
                Illinois&#160;&#160;60601</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">800-699-1269</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">(Name
                and
                address, and telephone number, including area code, of agent for
                service)</font></div>
            </td>
            <td colspan="3" valign="top" width="47%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Copy
                to:</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Russell
                E. Ryba</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Foley
                &amp; Lardner LLP</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">777
                East Wisconsin Avenue</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">Milwaukee,
                Wisconsin 53202-5367</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: arial">414-297-5668</font></div>
            </td>
            <td valign="top" width="1%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">CALCULATION
      OF REGISTRATION FEE</font></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td align="left" valign="bottom" width="26%" style="BORDER-TOP: black 1.5pt double; BORDER-BOTTOM: black 2px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Title
                of
                Securities to be Registered</font></div>
            </td>
            <td valign="bottom" width="13%" style="BORDER-TOP: black 1.5pt double; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 2px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Amount
                to
                be</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Registered
                <font style="DISPLAY: inline; FONT-SIZE: 70%; VERTICAL-ALIGN: super">(1)</font></font></div>
            </td>
            <td valign="bottom" width="13%" style="BORDER-TOP: black 1.5pt double; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 2px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt; TEXT-ALIGN: center">&#160;<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Proposed
                <br>Maximum</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Offering
                Price <br>Per Share<font style="DISPLAY: inline; FONT-SIZE: 70%; VERTICAL-ALIGN: super">(2)</font></font></div>
            </td>
            <td valign="bottom" width="20%" style="BORDER-TOP: black 1.5pt double; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 2px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Proposed
                Maximum</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Aggregate</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Offering
                Price <font style="DISPLAY: inline; FONT-SIZE: 70%; VERTICAL-ALIGN: super">(2)</font></font></div>
            </td>
            <td valign="bottom" width="13%" style="BORDER-TOP: black 1.5pt double; BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 2px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Amount
                of</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Registration</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Fee</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="26%" style="BORDER-BOTTOM: black 4px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Common
                Stock,
                $1.00 par value</font></div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 4px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">700,000</font></div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 4px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">$48.03</font></div>
            </td>
            <td valign="top" width="20%" style="BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 4px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">$33,621,000</font></div>
            </td>
            <td valign="top" width="13%" style="BORDER-LEFT: black 0.5pt solid; BORDER-BOTTOM: black 4px solid">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">$1,322</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div align="center">
      <table border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
            <td style="WIDTH: 36pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr valign="top">
            <td style="WIDTH: 36pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">(1)</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Pursuant
                to
                Rule 416 under the Securities Act of 1933, in the event of a stock
                split,
                stock dividend, or similar transaction involving the Common Stock,
                in
                order to prevent dilution, the number of shares registered shall
                be
                automatically increased to cover additional shares.
                </font></div>
            </td>
          </tr>

      </table>
    </div>
    <div align="center">
      <table border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
            <td style="WIDTH: 36pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr valign="top">
            <td style="WIDTH: 36pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">(2)</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Estimated
                for
                purposes of calculating the registration fee pursuant to Rule 457(c)
                and
                Rule 457(h) under the Securities Act, based on the average of the
                low and
                high prices of the common stock as reported on the New&#160;York Stock
                Exchange on April 15, 2008. </font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">In
      addition, pursuant to Rule 416(c) under the Securities Act of 1933, this
      Registration Statement also covers an indeterminate amount of interests of
      be
      offered or sold pursuant to the Integrys Energy Group, Inc. Deferred
      Compensation Plan described herein.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">The
      Prospectus
      related to this Registration Statement is a combined Prospectus pursuant to
      Rule
      429 and relates to Registration Nos. 333-63101, 333-71990, 333-71992 and
      333-127889.</font></div><br>
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        </div>
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        </div>
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    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">STATEMENT
      PURSUANT TO GENERAL INSTRUCTION E TO FORM S-8</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">On
      August 26, 2005, Integrys Energy Group, Inc., a Wisconsin corporation then
      known
      as WPS Resources Corporation (the &#8220;Registrant&#8221;), and Wisconsin Public Service
      Corporation, a Wisconsin corporation and wholly owned subsidiary of the
      Registrant (&#8220;WPSC&#8221;), filed a Registration Statement on Form S-8 (File No.
      333-127889) to register 448,000 shares of common stock of the Registrant, par
      value $1.00 per share (the &#8220;Common Stock&#8221;), issuable under the plan now known as
      the Integrys Energy Group, Inc. Deferred Compensation Plan, as amended (the
      &#8220;Deferred Plan&#8221;).&#160;&#160;On October 22, 2001, the Registrant and WPSC filed
      a Registration Statement on Form S-8 (File No. 333-71990) to register 62,000
      shares of Common Stock issuable under the Deferred Plan and $5,300,000 deferred
      compensation obligations.&#160;&#160;On October 22, 2001, the Registrant also
      filed a Registration Statement on Form S-8 (File No. 333-71992) to register
      30,000 shares of Common Stock issuable under the then WPS Resources Corporation
      Non-Employee Director Deferred Compensation and Deferred Stock Unit Plan, which
      plan was merged into the Deferred Plan, and $1,000,000 deferred compensation
      obligations.&#160;&#160;Prior thereto with respect to the Deferred Plan, the
      Registrant and WPSC filed a Registration Statement on Form S-8 (File No.
      333-63101) on September 9, 1998 to register 180,000 shares of Common Stock
      issuable under the Deferred Plan, $10,450,000 deferred compensation obligations
      and, pursuant to Rule 416(c) of the Securities Act of 1933, an indeterminate
      amount of interests in the Deferred Plan and a Registration Statement on Form
      S-8 (File No. 033-65167-01) on December 19, 1995 to register 30,000 shares
      of
      Common Stock issuable under the Deferred Plan, $5,890,000 deferred compensation
      obligations and an indeterminate amount of interests in the Deferred
      Plan.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">In
      April and May 2007, the Board of Directors and the shareholders of the
      Registrant approved an amendment and restatement of the Deferred Plan, which,
      among other things, increased the number of shares of Common Stock available
      for
      future grants.&#160;&#160;The purpose of this Registration Statement is to
      register 700,000 additional shares of Common Stock issuable under the Deferred
      Plan.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Pursuant
      to General
      Instruction E of Form S-8, the contents of the Registrant&#8217;s and WPSC&#8217;s
      Registration Statements on Form S-8 (Reg. Nos. 333-127889, 333-71990 and
      333-63101), including the documents incorporated by reference therein, and
      the
      contents of the Registrant&#8217;s Registration Statement on Form S-8 (Reg. No.
      333-71992), including the documents incorporated by reference therein, are
      incorporated by reference into this Registration Statement.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">PART
      I</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial"><font size="+0">INFORMATION</font>
      REQUIRED IN THE SECTION 10(a) PROSPECTUS</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">The
      document or
      documents containing the information specified in Part I are not required to
      be
      filed with the Securities and Exchange Commission as part of this Registration
      Statement.</font></div><br>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
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      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">2</font></div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">PART
      II</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">INFORMATION
      REQUIRED IN THE REGISTRATION STATEMENT</font></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
            <td style="WIDTH: 72pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">ITEM
                8.</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial"><font style="DISPLAY: inline; TEXT-DECORATION: underline">EXHIBITS</font>.
                </font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">The
      following
      exhibits have been filed (except where otherwise indicated) as part of this
      Registration Statement:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td valign="top" width="16%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Exhibit
                No.</font></font></font></div>
            </td>
            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Exhibit</font></font></font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="16%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td valign="top" width="64%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr>
            <td valign="top" width="16%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">4</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Integrys
                Energy Group, Inc. Deferred Compensation Plan as amended and restated
                to
                date (incorporated by reference to Exhibit 10.14 to the Registrant&#8217;s
                Annual Report on Form 10-K for the year ended December 31, 2007,
                filed
                February 28, 2008 [File No. 1-11337]).</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="16%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">5</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Opinion
                of
                Foley &amp; Lardner LLP.</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="16%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">23.1</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Consent
                of
                Deloitte &amp; Touche LLP.</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="16%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">23.2</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Consent
                of
                Foley &amp; Lardner LLP (contained in Exhibit 5).</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="16%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">24</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="64%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Powers
                of
                Attorney.</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table align="center" border="0" cellpadding="0" cellspacing="0" id="hangingindent" width="100%">

          <tr valign="top">
            <td style="WIDTH: 72pt">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">ITEM
                9.</font></div>
            </td>
            <td>
              <div align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial"><font style="DISPLAY: inline; TEXT-DECORATION: underline">UNDERTAKINGS</font>.
                </font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">a.&#160;&#160;The
      undersigned Registrant hereby undertakes:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(1)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      to file, during any period in which offers or sales are being made, a
      post-effective amendment to this registration statement:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(a)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      to include any prospectus required by Section 10(a)(3) of the Securities Act
      of
      1933;</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(b)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      to reflect in the prospectus any facts or events arising after the effective
      date of the registration statement (or the most recent post-effective amendment
      thereof) which, individually or in the aggregate, represent a fundamental change
      in the information set forth in the registration statement. Notwithstanding
      the
      foregoing, any increase or decrease in volume of securities offered (if the
      total dollar value of securities offered would not exceed that which was
      registered) and any deviation from the low or high end of the estimated maximum
      offering range may be reflected in the form of prospectus filed with the
      Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume
      and price represent no more than a 20% change in the maximum aggregate offering
      price set forth in the &#8220;Calculation of Registration Fee&#8221; table in the effective
      registration statement.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(c)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      to include any material information with respect to the plan of distribution
      not
      previously disclosed in the registration statement or any material change to
      such information in the registration statement.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial"><font style="DISPLAY: inline; FONT-STYLE: italic">provided,
      however,</font> that
      paragraphs (a)(1)(a) and (a)(1)(b) of this section do not apply if the
      registration statement is on Form S-8, and the information required to be
      included in a post-effective amendment by </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">3</font></div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">those
      paragraphs is
      contained in periodic reports filed with or furnished to the Commission by
      the
      Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange
      Act of 1934 that are incorporated by reference in the registration
      statement.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(2)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      that, for the purpose of determining any liability under the Securities Act
      of
      1933, each such post-effective amendment shall be deemed to be a new
      registration statement relating to the securities offered therein, and the
      offering of such securities at the time shall be deemed to be the initial bona
      fide offering thereof.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(3)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      to remove from registration by means of a post-effective amendment any of the
      securities being registered which remain unsold at the termination of the
      offering.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(4)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      that, for the purpose of determining liability under the Securities Act of
      1933
      to any purchaser:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(a)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      Each prospectus filed by a Registrant pursuant to Rule 424(b)(3) shall be deemed
      to be part of the registration statement as of the date the filed prospectus
      was
      deemed part of and included in the registration statement; and</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(b)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5) or
      (b)(7) as part of a registration statement in reliance on Rule 430B relating
      to
      an offering made pursuant to Rule 415(a)(1)(i), (vii) or (x) for the purpose
      of
      providing the information required by Section 10(a) of the Securities Act of
      1933 shall be deemed to be part of and included in the registration statement
      as
      of the earlier of the date such form of prospectus is first used after
      effectiveness or the date of the first contract of sale of securities in the
      offering described in the prospectus. As provided in Rule 430B, for liability
      purposes of the issuer and any person that is at that date an underwriter,
      such
      date shall be deemed to be a new effective date of the registration statement
      relating to the securities in the registration statement to which the prospectus
      relates, and the offering of such securities at that time shall be deemed to
      be
      the initial bona fide offering thereof. Provided, however, that no statement
      made in a registration statement or prospectus that is part of the registration
      statement or made in a document incorporated or deemed incorporated by reference
      into the registration statement or prospectus that is part of the registration
      statement will, as to a purchaser with a time of contract of sale prior to
      such
      effective date, supersede or modify any statement that was made in the
      registration statement or prospectus that was part of the registration statement
      or made in any such document immediately prior to such effective
      date.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(5)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      That, for the purpose of determining liability of the Registrant under the
      Securities Act of 1933 to any purchaser in the initial distribution of the
      securities, the undersigned Registrant undertakes that in a primary offering
      of
      securities of the undersigned Registrant pursuant to this registration
      statement, regardless of the underwriting method used to sell the securities
      to
      the purchaser, if the securities are offered or sold to such purchaser by means
      of any of the following communications, the undersigned Registrant will be
      a
      seller to the purchaser and will be considered to offer or sell such securities
      to such purchaser:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(a)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      Any preliminary prospectus or prospectus of the undersigned Registrant relating
      to the offering required to be filed pursuant to Rule 424;</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(b)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      Any free writing prospectus relating to the offering prepared by or on behalf
      of
      the undersigned Registrant or used or referred to by the undersigned
      Registrant;</font></div><br>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">4</font></div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(c)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      The portion of any other free writing prospectus relating to the offering
      containing material information about the undersigned Registrant or its
      securities provided by or on behalf of the undersigned Registrant;
      and</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">(d)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;
      Any other communication that is an offer in the offering made by the undersigned
      Registrant to the purchaser.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">b.&#160;&#160;The
      undersigned Registrant hereby undertakes, that, for purposes of determining
      any
      liability under the Securities Act of 1933, each filing of the Registrant&#8217;s
      annual report pursuant to Section 13(a) or Section 15(d) of the Securities
      Exchange Act of 1934 that is incorporated by reference in this registration
      statement shall be deemed to be a new registration statement relating to the
      securities offered herein, and the offering of such securities at that time
      shall be deemed to be the initial bona fide offering thereof.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">c.&#160;&#160;Insofar
      as indemnification for liabilities arising under the Securities Act of 1933
      may
      be permitted to directors, officers and controlling persons of the Registrant
      pursuant to the foregoing provisions, or otherwise, the Registrant has been
      advised that in the opinion of the Securities and Exchange Commission such
      indemnification is against public policy as expressed in the Act and is,
      therefore, unenforceable.&#160;&#160;In the event that a claim for
      indemnification against such liabilities (other than the payment by the
      Registrant of expenses incurred or paid by a director, officer or controlling
      person of the Registrant in the successful defense of any action, suit or
      proceeding) is asserted by such director, officer or controlling person in
      connection with the securities being registered, the Registrant will, unless
      in
      the opinion of its counsel the matter has been settled by controlling precedent,
      submit to a court of appropriate jurisdiction the question whether such
      indemnification by it is against public policy as expressed in the Act and
      will
      be governed by the final adjudication of such issue.</font></div><br>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">5</font></div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Arial">SIGNATURES</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Pursuant
      to the
      requirements of the Securities Act of 1933, the Registrant certifies that it
      has
      reasonable grounds to believe that it meets all of the requirements for filing
      on Form S-8 and has duly caused this Registration Statement to be signed on
      its
      behalf by the undersigned, thereunto duly authorized, in the City of Green
      Bay,
      and State of Wisconsin, on this 17th day of April, 2008.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 234pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Arial">INTEGRYS
      ENERGY GROUP, INC.</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 234pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">By:
<font style="DISPLAY: inline; TEXT-DECORATION: underline">/s/
      Larry L.
      Weyers</font></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 243pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial"><font id="TAB1" style="MARGIN-LEFT: 13.5pt"></font>Larry
      L. Weyers</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 243pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-STYLE: italic; FONT-FAMILY: Arial"><font id="TAB1" style="MARGIN-LEFT: 13.5pt"></font>President
      and Chief Executive
      Officer</font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 72pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Pursuant
      to the
      requirements of the Securities Act of 1933, this Registration Statement has
      been
      signed below by the following persons in the capacities and on the dates
      indicated.</font></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Name</font></font></font></div>
            </td>
            <td valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Capacity</font></font></font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="41%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td valign="top" width="37%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">/s/
                Larry L.
                Weyers</font></font></font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Larry
                L.
                Weyers</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">President,
                Chief Executive Officer (principal executive officer) and
                Director*</font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="41%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td valign="top" width="37%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="DISPLAY: inline; TEXT-DECORATION: underline">/s/
                Joseph P.
                O&#8217;Leary</font></font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Joseph
                P.
                O&#8217;Leary</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Senior
                Vice
                President and Chief Financial Officer (principal financial
                officer)*</font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="41%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td valign="top" width="37%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">/s/
                Diane L.
                Ford</font></font></font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Diane
                L.
                Ford</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Vice
                President and Corporate Controller (principal accounting
                officer)*</font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="41%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td valign="top" width="37%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">*
      Each of the above signatures is affixed as of April 17, 2008.</font></div><br>
    <div id="PGBRK" style="MARGIN-LEFT: 0pt; WIDTH: 100%; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
      <div id="FTR">
        <div id="GLFTR" style="WIDTH: 100%" align="left">
        </div>
      </div>
      <div id="PN" style="PAGE-BREAK-AFTER: always">
        <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">6</font></div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Keith
                E.
                Bailey+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Richard
                A.
                Bemis+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">James
                R.
                Boris+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Chairman
                of
                the Board and Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">William
                J.
                Brodsky+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Albert
                J.
                Budney, Jr.+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Pastora
                San
                Juan Cafferty+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Ellen
                Carnahan+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Robert
                C.
                Gallagher+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Kathryn
                Hasselblad-Pascale+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">John
                W.
                Higgins+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">James
                L.
                Kemerling+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Michael
                E.
                Lavin+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">John
                C. Meng
                +</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">William
                F.
                Protz, Jr.+</font></div>
            </td>
            <td align="left" valign="top" width="37%">
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Director</font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="41%">
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              <div style="DISPLAY: block; MARGIN-LEFT: 9pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">+By:
<font style="DISPLAY: inline; TEXT-DECORATION: underline">/s/
                Barth J.
                Wolf</font></font><font style="TEXT-DECORATION: underline">&#160;</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 27pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Barth
                J.
                Wolf</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 27pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Attorney-in-Fact*</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td valign="top" width="37%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">*
      Each of the above signatures is affixed as of April 17, 2008.</font></div><br>
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        <div style="WIDTH: 100%; TEXT-ALIGN: center">
          <hr style="COLOR: black" noshade size="2">
        </div>
      </div>
      <div id="HDR">
        <div id="GLHDR" style="WIDTH: 100%" align="right">
        </div>
      </div>
    </div><br>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Arial">EXHIBIT
      INDEX</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial">Form
      S-8
      Registration Statement for</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Arial"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Integrys
      Energy Group, Inc.
      Deferred Compensation Plan</font></font></div>
    <div style="DISPLAY: block; TEXT-INDENT: 0pt"><br></div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

          <tr>
            <td valign="top" width="17%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Exhibit
                No.</font></font></font></div>
            </td>
            <td align="left" valign="top" width="62%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial"><font style="TEXT-DECORATION: underline"><font style="DISPLAY: inline; TEXT-DECORATION: underline">Exhibit</font></font></font></div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="17%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
            <td valign="top" width="62%"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: arial">&#160;</font></td>
          </tr>
          <tr>
            <td valign="top" width="17%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">4</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="62%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Integrys
                Energy Group, Inc. Deferred Compensation Plan as amended and restated
                to
                date (incorporated by reference to Exhibit 10.14 to the Registrant&#8217;s
                Annual Report on Form 10-K for the year ended December 31, 2007,
                filed
                February 28, 2008 [File No. 1-11337]).</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="17%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">5</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="62%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Opinion
                of
                Foley &amp; Lardner LLP.</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="17%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">23.1</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="62%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Consent
                of
                Deloitte &amp; Touche LLP.</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="17%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">23.2</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="62%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Consent
                of
                Foley &amp; Lardner LLP (contained in Exhibit 5).</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>
          <tr>
            <td valign="top" width="17%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">24</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
            <td align="left" valign="top" width="62%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: arial">Powers
                of
                Attorney.</font></div>
              <div style="DISPLAY: block; TEXT-INDENT: 0pt">
              </div>
            </td>
          </tr>

      </table>
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[{"type": "S-8", "sequence": "1", "filename": "forms8.htm", "description": "FOR S-8 DEFERRED COMPENSATION PLAN", "secsgml_size_bytes": 80055}, {"type": "S-8", "sequence": "5", "filename": "forms8.pdf", "description": "PDF COPY", "secsgml_size_bytes": 484198}]
{"company-data": {"conformed-name": "INTEGRYS ENERGY GROUP, INC.", "cik": "0000916863", "assigned-sic": "4931", "irs-number": "391775292", "state-of-incorporation": "WI", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-150311", "film-number": "08764060"}, "business-address": {"street1": "130 EAST RANDOLPH DRIVE", "city": "CHICAGO", "state": "IL", "zip": "60601", "phone": "800-699-1269"}, "mail-address": {"street1": "130 EAST RANDOLPH DRIVE", "city": "CHICAGO", "state": "IL", "zip": "60601"}, "former-company": [{"former-conformed-name": "Integrys Energy Group, Inc.", "date-changed": "20070222"}, {"former-conformed-name": "WPS RESOURCES CORP", "date-changed": "19940103"}]}
forms8.htm
Registration
      No.
      333-________
UNITED
      STATES
SECURITIES
      AND
      EXCHANGE COMMISSION
Washington,
      D.C.  20549
______________________
FORM
      S-8
REGISTRATION
      STATEMENT
Under
THE
      SECURITIES ACT
      OF 1933
______________________
INTEGRYS
                ENERGY GROUP, INC.
(Exact
                name
                of Registrant as specified in its charter)
Wisconsin
(State
                or
                other jurisdiction of
incorporation
                or organization)
39-1775292
(I.R.S.
                Employer
Identification
                No.)
130
                East Randolph Drive
Chicago,
                Illinois  60601
(Address
                of
                principal executive offices)
Integrys
                Energy Group, Inc. Deferred Compensation Plan
(Full
                title
                of the plan)
Larry
                L. Weyers
President
                and Chief Executive Officer
Integrys
                Energy Group, Inc.
130
                East Randolph Drive
Chicago,
                Illinois  60601
800-699-1269
(Name
                and
                address, and telephone number, including area code, of agent for
                service)
Copy
                to:
Russell
                E. Ryba
Foley
                & Lardner LLP
777
                East Wisconsin Avenue
Milwaukee,
                Wisconsin 53202-5367
414-297-5668
CALCULATION
      OF REGISTRATION FEE
Title
                of
                Securities to be Registered
Amount
                to
                be
Registered
(1)
Proposed
Maximum
Offering
                Price
Per Share
(2)
Proposed
                Maximum
Aggregate
Offering
                Price
(2)
Amount
                of
Registration
Fee
Common
                Stock,
                $1.00 par value
700,000
$48.03
$33,621,000
$1,322
(1)
Pursuant
                to
                Rule 416 under the Securities Act of 1933, in the event of a stock
                split,
                stock dividend, or similar transaction involving the Common Stock,
                in
                order to prevent dilution, the number of shares registered shall
                be
                automatically increased to cover additional shares.
(2)
Estimated
                for
                purposes of calculating the registration fee pursuant to Rule 457(c)
                and
                Rule 457(h) under the Securities Act, based on the average of the
                low and
                high prices of the common stock as reported on the New York Stock
                Exchange on April 15, 2008.
In
      addition, pursuant to Rule 416(c) under the Securities Act of 1933, this
      Registration Statement also covers an indeterminate amount of interests of
      be
      offered or sold pursuant to the Integrys Energy Group, Inc. Deferred
      Compensation Plan described herein.
The
      Prospectus
      related to this Registration Statement is a combined Prospectus pursuant to
      Rule
      429 and relates to Registration Nos. 333-63101, 333-71990, 333-71992 and
      333-127889.
STATEMENT
      PURSUANT TO GENERAL INSTRUCTION E TO FORM S-8
On
      August 26, 2005, Integrys Energy Group, Inc., a Wisconsin corporation then
      known
      as WPS Resources Corporation (the "Registrant"), and Wisconsin Public Service
      Corporation, a Wisconsin corporation and wholly owned subsidiary of the
      Registrant ("WPSC"), filed a Registration Statement on Form S-8 (File No.
      333-127889) to register 448,000 shares of common stock of the Registrant, par
      value $1.00 per share (the "Common Stock"), issuable under the plan now known as
      the Integrys Energy Group, Inc. Deferred Compensation Plan, as amended (the
      "Deferred Plan").  On October 22, 2001, the Registrant and WPSC filed
      a Registration Statement on Form S-8 (File No. 333-71990) to register 62,000
      shares of Common Stock issuable under the Deferred Plan and $5,300,000 deferred
      compensation obligations.  On October 22, 2001, the Registrant also
      filed a Registration Statement on Form S-8 (File No. 333-71992) to register
      30,000 shares of Common Stock issuable under the then WPS Resources Corporation
      Non-Employee Director Deferred Compensation and Deferred Stock Unit Plan, which
      plan was merged into the Deferred Plan, and $1,000,000 deferred compensation
      obligations.  Prior thereto with respect to the Deferred Plan, the
      Registrant and WPSC filed a Registration Statement on Form S-8 (File No.
      333-63101) on September 9, 1998 to register 180,000 shares of Common Stock
      issuable under the Deferred Plan, $10,450,000 deferred compensation obligations
      and, pursuant to Rule 416(c) of the Securities Act of 1933, an indeterminate
      amount of interests in the Deferred Plan and a Registration Statement on Form
      S-8 (File No. 033-65167-01) on December 19, 1995 to register 30,000 shares
      of
      Common Stock issuable under the Deferred Plan, $5,890,000 deferred compensation
      obligations and an indeterminate amount of interests in the Deferred
      Plan.
In
      April and May 2007, the Board of Directors and the shareholders of the
      Registrant approved an amendment and restatement of the Deferred Plan, which,
      among other things, increased the number of shares of Common Stock available
      for
      future grants.  The purpose of this Registration Statement is to
      register 700,000 additional shares of Common Stock issuable under the Deferred
      Plan.
Pursuant
      to General
      Instruction E of Form S-8, the contents of the Registrant's and WPSC's
      Registration Statements on Form S-8 (Reg. Nos. 333-127889, 333-71990 and
      333-63101), including the documents incorporated by reference therein, and
      the
      contents of the Registrant's Registration Statement on Form S-8 (Reg. No.
      333-71992), including the documents incorporated by reference therein, are
      incorporated by reference into this Registration Statement.
PART
      I
INFORMATION
REQUIRED IN THE SECTION 10(a) PROSPECTUS
The
      document or
      documents containing the information specified in Part I are not required to
      be
      filed with the Securities and Exchange Commission as part of this Registration
      Statement.
2
PART
      II
INFORMATION
      REQUIRED IN THE REGISTRATION STATEMENT
ITEM
                8.
EXHIBITS
.
The
      following
      exhibits have been filed (except where otherwise indicated) as part of this
      Registration Statement:
Exhibit
                No.
Exhibit
4
Integrys
                Energy Group, Inc. Deferred Compensation Plan as amended and restated
                to
                date (incorporated by reference to Exhibit 10.14 to the Registrant's
                Annual Report on Form 10-K for the year ended December 31, 2007,
                filed
                February 28, 2008 [File No. 1-11337]).
5
Opinion
                of
                Foley & Lardner LLP.
23.1
Consent
                of
                Deloitte & Touche LLP.
23.2
Consent
                of
                Foley & Lardner LLP (contained in Exhibit 5).
24
Powers
                of
                Attorney.
ITEM
                9.
UNDERTAKINGS
.
a.  The
      undersigned Registrant hereby undertakes:
(1)           
      to file, during any period in which offers or sales are being made, a
      post-effective amendment to this registration statement:
(a)           
      to include any prospectus required by Section 10(a)(3) of the Securities Act
      of
      1933;
(b)           
      to reflect in the prospectus any facts or events arising after the effective
      date of the registration statement (or the most recent post-effective amendment
      thereof) which, individually or in the aggregate, represent a fundamental change
      in the information set forth in the registration statement. Notwithstanding
      the
      foregoing, any increase or decrease in volume of securities offered (if the
      total dollar value of securities offered would not exceed that which was
      registered) and any deviation from the low or high end of the estimated maximum
      offering range may be reflected in the form of prospectus filed with the
      Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume
      and price represent no more than a 20% change in the maximum aggregate offering
      price set forth in the "Calculation of Registration Fee" table in the effective
      registration statement.
(c)           
      to include any material information with respect to the plan of distribution
      not
      previously disclosed in the registration statement or any material change to
      such information in the registration statement.
provided,
      however,
that
      paragraphs (a)(1)(a) and (a)(1)(b) of this section do not apply if the
      registration statement is on Form S-8, and the information required to be
      included in a post-effective amendment by
3
those
      paragraphs is
      contained in periodic reports filed with or furnished to the Commission by
      the
      Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange
      Act of 1934 that are incorporated by reference in the registration
      statement.
(2)           
      that, for the purpose of determining any liability under the Securities Act
      of
      1933, each such post-effective amendment shall be deemed to be a new
      registration statement relating to the securities offered therein, and the
      offering of such securities at the time shall be deemed to be the initial bona
      fide offering thereof.
(3)           
      to remove from registration by means of a post-effective amendment any of the
      securities being registered which remain unsold at the termination of the
      offering.
(4)           
      that, for the purpose of determining liability under the Securities Act of
      1933
      to any purchaser:
(a)           
      Each prospectus filed by a Registrant pursuant to Rule 424(b)(3) shall be deemed
      to be part of the registration statement as of the date the filed prospectus
      was
      deemed part of and included in the registration statement; and
(b)           
      Each prospectus required to be filed pursuant to Rule 424(b)(2), (b)(5) or
      (b)(7) as part of a registration statement in reliance on Rule 430B relating
      to
      an offering made pursuant to Rule 415(a)(1)(i), (vii) or (x) for the purpose
      of
      providing the information required by Section 10(a) of the Securities Act of
      1933 shall be deemed to be part of and included in the registration statement
      as
      of the earlier of the date such form of prospectus is first used after
      effectiveness or the date of the first contract of sale of securities in the
      offering described in the prospectus. As provided in Rule 430B, for liability
      purposes of the issuer and any person that is at that date an underwriter,
      such
      date shall be deemed to be a new effective date of the registration statement
      relating to the securities in the registration statement to which the prospectus
      relates, and the offering of such securities at that time shall be deemed to
      be
      the initial bona fide offering thereof. Provided, however, that no statement
      made in a registration statement or prospectus that is part of the registration
      statement or made in a document incorporated or deemed incorporated by reference
      into the registration statement or prospectus that is part of the registration
      statement will, as to a purchaser with a time of contract of sale prior to
      such
      effective date, supersede or modify any statement that was made in the
      registration statement or prospectus that was part of the registration statement
      or made in any such document immediately prior to such effective
      date.
(5)           
      That, for the purpose of determining liability of the Registrant under the
      Securities Act of 1933 to any purchaser in the initial distribution of the
      securities, the undersigned Registrant undertakes that in a primary offering
      of
      securities of the undersigned Registrant pursuant to this registration
      statement, regardless of the underwriting method used to sell the securities
      to
      the purchaser, if the securities are offered or sold to such purchaser by means
      of any of the following communications, the undersigned Registrant will be
      a
      seller to the purchaser and will be considered to offer or sell such securities
      to such purchaser:
(a)           
      Any preliminary prospectus or prospectus of the undersigned Registrant relating
      to the offering required to be filed pursuant to Rule 424;
(b)           
      Any free writing prospectus relating to the offering prepared by or on behalf
      of
      the undersigned Registrant or used or referred to by the undersigned
      Registrant;
4
(c)           
      The portion of any other free writing prospectus relating to the offering
      containing material information about the undersigned Registrant or its
      securities provided by or on behalf of the undersigned Registrant;
      and
(d)           
      Any other communication that is an offer in the offering made by the undersigned
      Registrant to the purchaser.
b.  The
      undersigned Registrant hereby undertakes, that, for purposes of determining
      any
      liability under the Securities Act of 1933, each filing of the Registrant's
      annual report pursuant to Section 13(a) or Section 15(d) of the Securities
      Exchange Act of 1934 that is incorporated by reference in this registration
      statement shall be deemed to be a new registration statement relating to the
      securities offered herein, and the offering of such securities at that time
      shall be deemed to be the initial bona fide offering thereof.
c.  Insofar
      as indemnification for liabilities arising under the Securities Act of 1933
      may
      be permitted to directors, officers and controlling persons of the Registrant
      pursuant to the foregoing provisions, or otherwise, the Registrant has been
      advised that in the opinion of the Securities and Exchange Commission such
      indemnification is against public policy as expressed in the Act and is,
      therefore, unenforceable.  In the event that a claim for
      indemnification against such liabilities (other than the payment by the
      Registrant of expenses incurred or paid by a director, officer or controlling
      person of the Registrant in the successful defense of any action, suit or
      proceeding) is asserted by such director, officer or controlling person in
      connection with the securities being registered, the Registrant will, unless
      in
      the opinion of its counsel the matter has been settled by controlling precedent,
      submit to a court of appropriate jurisdiction the question whether such
      indemnification by it is against public policy as expressed in the Act and
      will
      be governed by the final adjudication of such issue.
5
SIGNATURES
Pursuant
      to the
      requirements of the Securities Act of 1933, the Registrant certifies that it
      has
      reasonable grounds to believe that it meets all of the requirements for filing
      on Form S-8 and has duly caused this Registration Statement to be signed on
      its
      behalf by the undersigned, thereunto duly authorized, in the City of Green
      Bay,
      and State of Wisconsin, on this 17th day of April, 2008.
INTEGRYS
      ENERGY GROUP, INC.
By:
/s/
      Larry L.
      Weyers
Larry
      L. Weyers
President
      and Chief Executive
      Officer
Pursuant
      to the
      requirements of the Securities Act of 1933, this Registration Statement has
      been
      signed below by the following persons in the capacities and on the dates
      indicated.
Name
Capacity
/s/
                Larry L.
                Weyers
Larry
                L.
                Weyers
President,
                Chief Executive Officer (principal executive officer) and
                Director*
/s/
                Joseph P.
                O'Leary
Joseph
                P.
                O'Leary
Senior
                Vice
                President and Chief Financial Officer (principal financial
                officer)*
/s/
                Diane L.
                Ford
Diane
                L.
                Ford
Vice
                President and Corporate Controller (principal accounting
                officer)*
*
      Each of the above signatures is affixed as of April 17, 2008.
6
Keith
                E.
                Bailey+
Director
Richard
                A.
                Bemis+
Director
James
                R.
                Boris+
Chairman
                of
                the Board and Director
William
                J.
                Brodsky+
Director
Albert
                J.
                Budney, Jr.+
Director
Pastora
                San
                Juan Cafferty+
Director
Ellen
                Carnahan+
Director
Robert
                C.
                Gallagher+
Director
Kathryn
                Hasselblad-Pascale+
Director
John
                W.
                Higgins+
Director
James
                L.
                Kemerling+
Director
Michael
                E.
                Lavin+
Director
John
                C. Meng
                +
Director
William
                F.
                Protz, Jr.+
Director
+By:
/s/
                Barth J.
                Wolf
Barth
                J.
                Wolf
Attorney-in-Fact*
*
      Each of the above signatures is affixed as of April 17, 2008.
7
EXHIBIT
      INDEX
Form
      S-8
      Registration Statement for
Integrys
      Energy Group, Inc.
      Deferred Compensation Plan
Exhibit
                No.
Exhibit
4
Integrys
                Energy Group, Inc. Deferred Compensation Plan as amended and restated
                to
                date (incorporated by reference to Exhibit 10.14 to the Registrant's
                Annual Report on Form 10-K for the year ended December 31, 2007,
                filed
                February 28, 2008 [File No. 1-11337]).
5
Opinion
                of
                Foley & Lardner LLP.
23.1
Consent
                of
                Deloitte & Touche LLP.
23.2
Consent
                of
                Foley & Lardner LLP (contained in Exhibit 5).
24
Powers
                of
                Attorney.
8