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- 10-K Annual report
- 4 Form 10-K 12/31/08 Exhibit 4.19
- 10 Form 10-K 12/31/08 Exhibit 10.4C
- 10 Form 10-K 12/31/08 Exhibit 10.4D
- 12 Form 10-K 12/31/08 Exhibit 12.1
- 12 Form 10-K 12/31/08 Exhibit 12.2
- 12 Form 10-K 12/31/08 Exhibit 12.3
- 21 Form 10-K 12/31/08 Exhibit 21.1
- 21 Form 10-K 12/31/08 Exhibit 21.2
- 23 Form 10-K 12/31/08 Exhibit 23.1
- 23 Form 10-K 12/31/08 Exhibit 23.2
- 23 Form 10-K 12/31/08 Exhibit 23.3
- 31 Form 10-K 12/31/08 Exhibit 31.1
- 31 Form 10-K 12/31/08 Exhibit 31.2
- 31 Form 10-K 12/31/08 Exhibit 31.3
- 31 Form 10-K 12/31/08 Exhibit 31.4
- 31 Form 10-K 12/31/08 Exhibit 31.5
- 31 Form 10-K 12/31/08 Exhibit 31.6
- 32 Form 10-K 12/31/08 Exhibit 32.1
- 32 Form 10-K 12/31/08 Exhibit 32.2
- 32 Form 10-K 12/31/08 Exhibit 32.3
- PDF Form 10-K 12/31/08 PDF
- COVER Cover
| Alliant Energy Corporation |
| Corporate Headquarters |
| 4902 North Biltmore Lane |
| P.O. Box 77007 |
| Madison, WI 53707-1007 |
|
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| Office: 1.800.862.6222 |
| www.alliantenergy.com |
February 27, 2009
Securities and Exchange Commission
450 Fifth Street, N.W.
Judiciary Plaza
Washington, D.C. 20549
| Re: | Alliant Energy Corporation – Commission File No. 1-9894 |
| Interstate Power and Light Company – Commission File No. 0-4117-1 |
| Wisconsin Power and Light Company – Commission File No. 0-337 |
Ladies and Gentlemen:
On behalf of Alliant Energy Corporation, a Wisconsin corporation, Interstate Power and Light Company, an Iowa corporation, and Wisconsin Power and Light Company, a Wisconsin corporation (collectively, the “Registrants”), we are transmitting for filing the Registrants’ Form 10-K for the annual period ended December 31, 2008.
This filing is being effected by direct transmission to the EDGAR System.
Please contact the undersigned at 608.458.0528 if you have any questions or comments regarding this filing.
Sincerely,
/s/ Thomas L. Hanson
Thomas L. Hanson
Vice President-Controller and Chief Accounting Officer
tomhanson@alliantenergy.com
Enclosure
cc: | Lynn Kaminski |
| Alliant Energy Corporation |