UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 ORor 15(d) of ~~The Securities Exchange Act of 1934~~

~~Date~~the ofSecurities ~~Report~~Exchange ~~(Date~~Act of 1934 ~~earliest event reported) November 9, 2012~~

Commission	Name of Registrant, State of Incorporation,	IRS Employer
File Number	Address of Principal Executive Offices and Telephone Number	Identification Number
1-9894	ALLIANT ENERGY CORPORATION	39-1380265
	(a Wisconsin corporation)
	4902 N. Biltmore Lane
	Madison, Wisconsin 53718
	Telephone (608)458-3311
0-4117-1	INTERSTATE POWER AND LIGHT COMPANY	42-0331370
	(an Iowa corporation)
	Alliant Energy Tower
	Cedar Rapids, Iowa 52401
	Telephone (319)786-4411
0-337	WISCONSIN POWER AND LIGHT COMPANY	39-0714890
	(a Wisconsin corporation)
	4902 N. Biltmore Lane
	Madison, Wisconsin 53718
	Telephone (608)458-3311

Date of Report (Date of earliest event reported): February 4, 2013

(Former name or former address, if changed since last report.)


Commission File Number	Name of Registrant, State of Incorporation, Address of Principal Executive Offices and Telephone Number	IRS Employer Identification Number

0-4117-1	Interstate Power and Light Company (an Iowa corporation) Alliant Energy Tower Cedar Rapids, Iowa 52401 Telephone (319) 786-4411	42-0331370

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

~~[ ]~~¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

~~[ ]~~¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

~~[ ]~~¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

~~[ ]~~¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 28.~~02 Results~~01. ofOther ~~Operations and Financial Condition~~Events.

On ~~November 9~~ February 4, ~~2012~~2013, ~~Alliant~~Interstate ~~Energy~~Power ~~Corporation~~and Light Company (~~“Alliant~~the ~~Energy~~“Company”) issued a press release announcing ~~its~~that ~~earnings~~it had issued a notice of redemption for all of the ~~third~~6,000,000 ~~quarter~~outstanding ~~ended~~shares ~~September 30~~of its 8.375% Series B Cumulative Preferred Stock, ~~2012~~$0. A01 ~~copy~~par ofvalue ~~such~~per share, effective March 22, 2013. The press release is ~~furnished~~filed as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference ~~herein~~.

~~Alliant~~Item Energy included in the press release income from continuing operations and earnings per share from continuing operations for the third quarter ended September 30, 2011 excluding charges for emission allowance contracts9. ~~Alliant~~01. ~~Energy~~Financial ~~believes~~Statements these non-GAAP financial measures (financial measures not prepared in accordance with accounting principles generally accepted in the United States of America) are useful to investors because they provide an alternate measure to better understand and compare across periods the operating performance of Alliant Energy without the distortion of items that management believes are not normally associated with ongoing operations, and also provide additional information about Alliant Energy's operations on a basis consistent with the measures that management uses to manage its operations and evaluate its performanceExhibits. ~~Alliant Energy's management also uses income from continuing operations, as adjusted, to determine incentive compensation.~~

In addition, Alliant Energy included in the press release Interstate Power and Light Company, Wisconsin Power and Light Company, Alliant Energy Corporate Services, Inc., utility and Alliant Energy Corporate Services, Inc., and non-regulated and parent earnings per share from continuing operations for the third quarter ended September 30, 2012 and 2011. Alliant Energy believes these non-GAAP financial measures are useful to investors because they facilitate an understanding of segment performance and trends and provide additional information about Alliant Energy's operations on a basis consistent with the measures that management uses to manage its operations and evaluate its performance. Alliant Energy's management also uses utility and Alliant Energy Corporate Services, Inc. earnings per share from continuing operations to determine incentive compensation.

Item 9.01 Financial Statements and Exhibits.

(a)

Not applicable.

(b)

Not applicable.

(c)

Not applicable.

(d) Exhibits. The following ~~exhibits~~exhibit ~~are~~is being ~~furnished~~filed herewith:

(99.1) ~~Alliant~~ ~~Energy~~Press ~~Corporation~~release ~~press~~of ~~release~~Interstate Power and Light Company, dated ~~November~~February 94, ~~2012~~2013.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, ~~the~~Interstate ~~registrants~~Power ~~have~~and Light Company has duly caused this report to be signed on ~~their~~its behalf by the undersigned hereunto duly authorized.

ALLIANT ENERGY CORPORATION

Date: November 9, 2012	By:/s/ Robert J. Durian
	Robert J. Durian
	Controller and Chief Accounting Officer

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INTERSTATE POWER AND LIGHT COMPANY

Date: November 9, 2012	By:/s/ Robert J. Durian
	Robert J. Durian
	Controller and Chief Accounting Officer

WISCONSIN POWER AND LIGHT COMPANY

Date: November 9, 2012	By:/s/ Robert J. Durian
	Robert J. Durian
	Controller and Chief Accounting Officer

ALLIANT ENERGY CORPORATION

INTERSTATE POWER AND LIGHT COMPANY

WISCONSIN POWER AND LIGHT COMPANY

Exhibit Index to Current Report on Form 8-K

Dated ~~November 9~~February 4, ~~2012~~2013

Exhibit Number


Exhibit Number		Description

(99.1)		Press release of Interstate Power and Light Company, dated February 4, 2013.

~~(99.~~-1~~) Alliant Energy Corporation press release dated November 9, 2012.~~-

INTERSTATE POWER AND LIGHT COMPANY

Date: February 4, 2013

/s/ Thomas L. Hanson

Thomas L. Hanson

Senior Vice President and Chief Financial Officer

Filing Compare · INTERSTATE POWER & LIGHT CO