Filed Pursuant to Rule 433
Dated September 30, 2009
Registration Statement No. 333-162214
ALLIANT ENERGY CORPORATION
Final Term Sheet
Dated September 30, 2009
| Issuer: |
Alliant Energy Corporation | |
| Size: |
$250,000,000 | |
| Security Type: |
Senior Notes | |
| Maturity Date: |
October 15, 2014 | |
| Interest Payment Dates: |
April 15 and October 15, commencing April 15, 2010 | |
| Record Date: |
1st day of the month of the interest payment date | |
| Coupon: |
4.00% | |
| Price to Public |
99.651% | |
| Yield to Maturity: |
4.077% | |
| Benchmark Treasury: |
2.375% due September 30, 2014 | |
| Benchmark Treasury Yield: |
2.327% | |
| Spread to Benchmark Treasury: |
+175 bps | |
| Optional Redemption – Reinvestment Rate: |
Make-whole call at T + 30 bps | |
| Trade Date: |
September 30, 2009 | |
| Settlement Date: |
October 2, 2009 (T+2) | |
| CUSIP: |
018802 AA6 | |
| ISIN: |
US018802AA67 | |
| Underwriters: |
Joint Book-Running Managers Citigroup Global Markets Inc. J.P. Morgan Securities Inc. | |
The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents that the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, you may request a copy of these documents from Citigroup Global Markets Inc. by calling (877) 858-5407 or from J.P. Morgan Securities Inc. by calling (212) 834-4533.