Interstate Power and Light Files Request for Reconsideration

CEDAR RAPIDS, Iowa, Jan. 28, 2011 /PRNewswire/ -- Interstate Power and Light Company (IPL), a subsidiary of Alliant Energy company (NYSE: LNT), filed a Request for Reconsideration on a limited number of specific points within the Iowa Utilities Board's (IUB's) written decision order on IPL's 2009 test year electric rate case issued on January 10, 2011.  The request asks the Board to clarify and/or provide further guidance on several discreet items in its order.  The reconsideration request is not expected to result in a material change to the revenue requirements set by the IUB.  The IUB's final decision may impact the regulatory related charges and credits previously recorded and disclosed by IPL.  The IUB has 30 days to render its decision on IPL's, or any other parties, request for reconsideration.

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A copy of the request will be available in the "Events" section at alliantenergy.com/investors following its posting to the IUB's website.

Interstate Power and Light is a public utility engaged principally in the generation and distribution of electric energy and the distribution and transportation of natural gas in selective markets in Iowa and southern Minnesota, serving approximately 525,000 electric and 234,000 natural gas customers

This press release includes forward-looking statements. These forward-looking statements can be identified as such because the statements include words such as "expected," "may," or other words of similar import. Similarly, statements that describe expected outcomes of the Request for Reconsideration, or timing of the IUB's decision on the Request for Reconsideration, are forward-looking. Such statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those currently anticipated. Actual results could be affected by the following factors, among others: state regulatory action in the reconsideration proceeding, whether other parties to the rate case also file a request for reconsideration, and future regulatory proceedings and any current or future litigation, regulatory investigations, proceedings or inquiries. These factors should be considered when evaluating the forward-looking statements and undue reliance should not be placed on such statements. The forward-looking statements included herein are made as of the date hereof and Alliant Energy and IPL undertake no obligation to update publicly such statements to reflect subsequent events or circumstances.

SOURCE Alliant Energy