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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Kd7KTSlVx4oC0xEiRy8tt5WefH+dIb2Ftu7qbizdAp0N8Kl562geN3srbH9pO2Fl
 3qXUVXwbxCAhMFczBx8bNA==

<SEC-DOCUMENT>9999999995-07-002585.txt : 20070628
<SEC-HEADER>9999999995-07-002585.hdr.sgml : 20070628
<ACCEPTANCE-DATETIME>20070628001521
ACCESSION NUMBER:		9999999995-07-002585
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20070627
DATE AS OF CHANGE:		20070628
EFFECTIVENESS DATE:		20070627

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			WISCONSIN POWER & LIGHT CO
		CENTRAL INDEX KEY:			0000107832
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC & OTHER SERVICES COMBINED [4931]
		IRS NUMBER:				390714890
		STATE OF INCORPORATION:			WI
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-143831
		FILM NUMBER:		07945056

	BUSINESS ADDRESS:	
		STREET 1:		4902 NORTH BILTMORE LANE
		STREET 2:		PO BOX 77007
		CITY:			MADISON
		STATE:			WI
		ZIP:			53707-1007
		BUSINESS PHONE:		608-4583314

	MAIL ADDRESS:	
		STREET 1:		4902 N BILTMORE LANE
		STREET 2:		PO BOX 77007
		CITY:			MADISON
		STATE:			WI
		ZIP:			53707-1007
</SEC-HEADER>
<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2007-06-27</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>10:00:00</finalEffectivenessDispTime>
        <form>S-3</form>
        <filer>
            <cik>0000107832</cik>
            <entityName>WISCONSIN POWER &amp; LIGHT CO</entityName>
            <fileNumber>333-143831</fileNumber>
        </filer>
    </effectiveData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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