POWER OF ATTORNEY

                   KNOW ALL PERSONS BY THESE PRESENTS, That I

                                 Alan B. Arends

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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Alan B. Arends
                                      --------------------------------------
                                      Alan B. Arends


                                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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Jack B. Evans
                                      --------------------------------------
                                      Jack B. Evans


                                POWER OF ATTORNEY

                   KNOW ALL PERSONS BY THESE PRESENTS, That I

                                 Joyce L. Hanes

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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Joyce L. Hanes
                                      --------------------------------------
                                      Joyce L. Hanes



                                POWER OF ATTORNEY

                   KNOW ALL PERSONS BY THESE PRESENTS, That I

                                     Lee Liu

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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Lee Liu
                                      --------------------------------------
                                      Lee Liu



                                POWER OF ATTORNEY

                   KNOW ALL PERSONS BY THESE PRESENTS, That I

                               Katharine C. Lyall

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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Katharine C. Lyall
                                      --------------------------------------
                                      Katharine C. Lyall


                                POWER OF ATTORNEY

                   KNOW ALL PERSONS BY THESE PRESENTS, That I

                                 Judith D. Pyle

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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Judith D. Pyle
                                      --------------------------------------
                                      Judith D. Pyle



                                POWER OF ATTORNEY

                   KNOW ALL PERSONS BY THESE PRESENTS, That I

                                Robert W. Schlutz

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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Robert W. Schlutz
                                      --------------------------------------
                                      Robert W. Schlutz



                                POWER OF ATTORNEY

                   KNOW ALL PERSONS BY THESE PRESENTS, That I

                              Wayne H. Stoppelmoor

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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Wayne H. Stoppelmoor
                                      --------------------------------------
                                      Wayne H. Stoppelmoor



                                POWER OF ATTORNEY

                   KNOW ALL PERSONS BY THESE PRESENTS, That I

                                Anthony R. Weiler

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-3, and any amendments
(including post-effective amendments) or supplements thereto, relating to the
resale of up to 5,940,960 unsecured exchangeable senior notes in an original
aggregate principal amount of $402,500,040 issued by the Company and
unconditionally guaranteed by the Parent, 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 resale of the unsecured exchangeable senior notes
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 20th day of July, 2001.


                                      /s/ Anthony R. Weiler
                                      --------------------------------------
                                      Anthony R. Weiler