Form 8-K 04-21-2005

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):        April 21, 2005

 

 

 
Commission
File Number

Name of Registrant, State of Incorporation,
Address of Principal Executive
Offices and Telephone Number

 
IRS Employer
Identification Number

 
1-9894

 
Alliant Energy Corporation
(a Wisconsin corporation)
4902 N. Biltmore Lane
Madison, Wisconsin 53718
Telephone (608) 458-3311

 
39-1380265

_______________________

 

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:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

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

o 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 April 21, 2005, Alliant Energy Corporation issued a press release previewing its earnings for the first quarter ended March 31, 2005. The press release is attached hereto as Exhibit 99.1 and incorporated herein by reference.

 

Item 9.01.

Financial Statements and Exhibits.

 

(a)

Not applicable.

 

(b)

Not applicable

 

(c)

Exhibits. The following exhibit is being filed herewith:

 

 

(99.1)

Alliant Energy Corporation press release dated April 21, 2005.

 

 

1

 

SIGNATURES

 

Pursuant to the requirements of the Securities Exchange Act of 1934, Alliant Energy Corporation has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

 

 

Date: April 21, 2005

 

 

ALLIANT ENERGY CORPORATION

 

By: /s/ John E. Kratchmer  

      John E. Kratchmer
      Vice President-Controller and
           Chief Accounting Officer

 

2

 

EXHIBIT INDEX

 

Exhibit No.

Description

 

99.1

Alliant Energy Corporation press release dated April 21, 2005

 

3