ALLIANT ENERGY CORP — Director's Dealing 2011

May 18, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ALLIANT ENERGY CORP (LNT)
CIK: 0000352541
Period of Report: 2011-05-17

Reporting Person: DOYLE DUNDEANA K (Senior Vice President)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-17	Deferred Common Stock	$0	A	96.2622	Acquired		Common Stock (96.2622)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7758.0934	Indirect

Footnotes

F1: Reflects 401(k) holdings as of this filing date.

F2: Units are to be settled upon reporting person's retirement.