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 ~~earliest event reported) July 31, 2015~~1934

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
1-4117	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

_______________________

~~(Former~~Date ~~name~~of ~~or former address, if changed since last report.)~~Report

(Date of earliest

event reported): September 22, 2016



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

1-9894	Alliant Energy Corporation (a Wisconsin corporation) 4902 N. Biltmore Lane Madison, Wisconsin 53718 Telephone (608) 458-3311	39-1380265
1-4117	Interstate Power and Light Company (an Iowa corporation) Alliant Energy Tower Cedar Rapids, Iowa 52401 Telephone (319) 786-4411	42-0331370
0-337	Wisconsin Power and Light Company (a Wisconsin corporation) 4902 N. Biltmore Lane Madison, Wisconsin 53718 Telephone (608) 458-3311	39-0714890

This combined Form 8-K is separately filed by Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company.

_______________________

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~~- ~~2.02 Results~~1 ~~of Operations and Financial Condition.~~-

OnItem ~~August~~ 5,.02. ~~2015,~~Departure ~~Alliant~~of ~~Energy~~Directors ~~Corporation~~or ~~(Alliant~~Certain ~~Energy)~~Officers; ~~issued~~Election aof ~~press~~Directors; ~~release~~Appointment ~~announcing~~of ~~its~~Certain ~~earnings~~Officers; ~~for~~Compensatory ~~the~~Arrangements ~~three and six months ended June 30, 2015. A copy~~ of ~~such~~Certain ~~press release is furnished as Exhibit 99~~Officers.~~1 and is incorporated by reference herein.~~

~~Alliant~~(b) ~~Energy~~(c) On ~~included~~September in22, ~~the~~2016, ~~press~~Thomas ~~release~~L. ~~income~~Hanson, ~~from~~Senior ~~continuing~~Vice ~~operations~~President and ~~earnings~~Chief ~~per~~Financial ~~share~~Officer ~~from~~of ~~continuing~~Alliant ~~operations~~Energy ~~for~~Corporation ~~the~~(“Alliant ~~three and six months ended June 30~~Energy”), ~~2015 excluding losses from the sales of~~ Interstate Power and Light Company’s (~~IPL’s~~“IP&L”) ~~Minnesota electric~~ and ~~natural~~Wisconsin ~~gas~~Power ~~distribution~~and ~~assets. Alliant~~Light ~~Energy~~Company ~~believes these non-GAAP financial measures~~ (~~financial~~“WP&L,” ~~measures~~and ~~not~~together ~~prepared in accordance~~ with ~~accounting~~Alliant ~~principles~~Energy ~~generally~~and ~~accepted~~IP&L, in the ~~United States of America~~“Company”), ~~are~~informed ~~useful~~the toBoard ~~investors~~of ~~because~~Directors ~~they~~that ~~provide~~he anwill ~~alternate~~resign ~~measure~~as toChief ~~better~~Financial ~~understand~~Officer ~~and compare across periods the operating performance~~ of ~~Alliant Energy without~~ the ~~distortion~~Company ofeffective ~~items~~December ~~that management believes are not normally associated with ongoing operations~~1, 2016 and ~~also~~will ~~provide~~remain ~~additional information about Alliant Energy’s operations on a basis consistent~~ with the ~~measures~~Company ~~that~~as ~~management~~Senior ~~uses~~Vice toPresident ~~manage~~until ~~its~~he ~~operations~~retires ~~and~~effective ~~evaluate~~December ~~its performance. Alliant Energy’s management also uses income from continuing operations~~31, ~~as adjusted, to determine performance-based compensation~~2016.

InThe ~~addition,~~Board ~~Alliant~~appointed ~~Energy~~Robert ~~included~~J. ~~in the press release IPL; Wisconsin Power and Light Company; AE Transco Investments~~Durian, ~~LLC and Alliant Energy Corporate Services~~46, ~~Inc.;~~as ~~utilities,~~the ~~American Transmission~~ Company’s ~~LLC~~Vice ~~and Alliant Energy Corporate Services~~President, ~~Inc.;~~Chief ~~and~~Financial ~~non-regulated~~Officer and ~~parent~~Treasurer ~~earnings~~effective ~~per~~December ~~share from continuing operations for the three and six months ended June 30~~1, ~~2015 and 2014~~2016. ~~Alliant~~Mr. ~~Energy~~Durian ~~believes~~has ~~these~~served ~~non-GAAP~~as ~~financial~~Vice ~~measures~~President, ~~are~~Chief ~~useful~~Accounting toOfficer ~~investors~~and ~~because~~Treasurer ~~they facilitate an understanding~~ of ~~segment~~the ~~performance~~Company ~~and~~since ~~trends~~July ~~and~~2016, ~~provide~~Vice ~~additional~~President, ~~information~~Chief ~~about~~Accounting ~~Alliant~~Officer ~~Energy’s~~and ~~operations~~Controller onsince aJuly ~~basis~~2015, ~~consistent~~and ~~with~~Chief ~~the~~Accounting ~~measures~~Officer ~~that management uses to manage its operations~~ and ~~evaluate~~Controller ~~its~~since ~~performance~~2011.

OnThe ~~July~~Board ~~31,~~appointed ~~2015,~~Benjamin ~~Alliant~~M. ~~Energy~~Bilitz, ~~and~~41, ~~IPL~~as ~~issued a press release announcing~~ the ~~closing of the sale of IPL~~Company’s ~~Minnesota~~Chief ~~electric~~Accounting ~~distribution~~Officer ~~assets. The sales of IPL’s Minnesota electric~~ and ~~natural~~Controller ~~gas~~effective ~~distribution~~December ~~assets resulted in a ($0.06) per share charge for the three months ended June 30~~1, ~~2015~~2016. AMr. ~~copy~~Bilitz ofhas ~~the~~served ~~press~~as ~~release~~the isCompany’s ~~furnished~~Controller assince ~~Exhibit~~July ~~99.2~~2016 and isits ~~incorporated~~Assistant byController ~~reference~~since ~~herein~~2011.

~~Item~~- ~~9.01 Financial~~2 ~~Statements and Exhibits.~~-

(a) Not applicable.

(b) Not applicable.

(d) Exhibits. The following exhibits are being furnished herewith:

(99.1) Alliant Energy Corporation press release dated August 5, 2015.

(99.2) Alliant Energy Corporation and Interstate Power and Light Company press release dated July 31, 2015.

SIGNATURES

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

ALLIANT ENERGY CORPORATION



	ALLIANT ENERGY CORPORATION

Date: September 22, 2016	By:/s/ James H. Gallegos
	James H. Gallegos
	Senior Vice President, General Counsel & Corporate Secretary


	INTERSTATE POWER AND LIGHT COMPANY

Date: September 22, 2016	By:/s/ James H. Gallegos
	James H. Gallegos
	Senior Vice President, General Counsel & Corporate Secretary


	WISCONSIN POWER AND LIGHT COMPANY

Date: September 22, 2016	By:/s/ James H. Gallegos
	James H. Gallegos
	Senior Vice President, General Counsel & Corporate Secretary

Date: August 5, 2015	By:/s/ Robert J. Durian
	Robert J. Durian
	Vice President, Chief Accounting Officer and Controller

- 3 -

INTERSTATE POWER AND LIGHT COMPANY

Date: August 5, 2015	By:/s/ Robert J. Durian
	Robert J. Durian
	Vice President, Chief Accounting Officer and Controller

WISCONSIN POWER AND LIGHT COMPANY

Date: August 5, 2015	By:/s/ Robert J. Durian
	Robert J. Durian
	Vice President, Chief Accounting Officer and Controller

ALLIANT ENERGY CORPORATION

INTERSTATE POWER AND LIGHT COMPANY

WISCONSIN POWER AND LIGHT COMPANY

Exhibit Index to Current Report on Form 8-K

Dated July 31, 2015

Exhibit Number

(99.1) Alliant Energy Corporation press release dated August 5, 2015.

(99.2) Alliant Energy Corporation and Interstate Power and Light Company press release dated July 31, 2015.

Filing Compare · INTERSTATE POWER & LIGHT CO