1 EXHIBIT 24 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, That I Jack B. Evans hereby constitute and appoint Erroll B. Davis, Jr. and Edward M. Gleason, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Alliant Energy Resources, Inc. (the "Company") and Alliant Energy Corporation (the "Parent") to the Registration Statement on Form S-4, and any amendments (including post-effective amendments) or supplements thereto, relating to an offer to exchange substantially identical unsecured debt securities and related guarantees that are registered under the Securities Act of 1933, as amended, for up to $250,000,000 aggregate principal amount of unsecured debt securities to be issued by the Company and unconditionally guaranteed by the Parent, after the consummation of the private placement of such debt securities, and to file said Registration Statement, and any amendment (including any post-effective amendment) or supplement thereto, with the Securities and Exchange Commission in connection with the registration of the unsecured debt securities and related guarantees under the Securities Act of 1933, as amended. I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney. WITNESS my hand this 2nd day of February, 2000. /s/ Jack B. Evans -------------------- Jack B. Evans