Exhibit 23.2
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-3 of our reports dated February 27, 2009, relating to the consolidated financial statements and financial statement schedules of Alliant Energy Corporation and subsidiaries (“Alliant Energy Corporation”) (which report expresses an unqualified opinion and includes an explanatory paragraph relating to the adoption of new accounting standards), and the effectiveness of Alliant Energy Corporation’s internal control over financial reporting, appearing in the Annual Report on Form 10-K of Alliant Energy Corporation for the year ended December 31, 2008, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.
/s/ Deloitte & Touche LLP
Milwaukee, Wisconsin
September 29, 2009