8-K
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) May 4, 2016

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

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

[ ] 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 of Operations and Financial Condition.

On May 4, 2016, Alliant Energy Corporation (Alliant Energy) issued a press release announcing its earnings for the three months ended March 31, 2016. A copy of such press release is furnished as Exhibit 99.1 and is incorporated by reference herein.

Alliant Energy included in the press release Interstate Power and Light Company; Wisconsin Power and Light Company; AE Transco Investments, LLC and Alliant Energy Corporate Services, Inc.; utilities, American Transmission Company LLC and Alliant Energy Corporate Services, Inc.; and non-regulated and parent earnings per share from continuing operations for the three months ended March 31, 2016 and 2015. 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.

Item 9.01 Financial Statements and Exhibits.

(a)
Not applicable.
(b)
Not applicable.
(c)
Not applicable.
(d)
Exhibits. The following exhibits are being furnished herewith:
(99.1) Alliant Energy Corporation press release dated May 4, 2016.





SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrants have duly caused this report to be signed on their behalf by the undersigned hereunto duly authorized.

ALLIANT ENERGY CORPORATION

Date: May 4, 2016
By:/s/ Robert J. Durian
 
Robert J. Durian
 
Vice President, Chief Accounting Officer and Controller


INTERSTATE POWER AND LIGHT COMPANY

Date: May 4, 2016
By:/s/ Robert J. Durian
 
Robert J. Durian
 
Vice President, Chief Accounting Officer and Controller


WISCONSIN POWER AND LIGHT COMPANY

Date: May 4, 2016
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 May 4, 2016

Exhibit Number

(99.1)
Alliant Energy Corporation press release dated May 4, 2016.