<PAGE>

                                                                      Exhibit 24

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Cinergy Corp., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 16th day of February, 2001.






                                       /s/ Jackson H. Randolph
                                       -----------------------
                                       Jackson H. Randolph

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of PSI Energy, Inc., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 16th day of February, 2001.





                                       /s/ Vicky A. Bailey
                                       -------------------
                                       Vicky A. Bailey

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Cinergy Corp., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 16th day of February, 2001.






                                       /s/ Dudley S. Taft
                                       ------------------
                                       Dudley S. Taft

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Cinergy Corp., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 20th day of February, 2001.





                                       /s/ Philip R. Sharp
                                       -------------------
                                       Philip R. Sharp

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Cinergy Corp., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 16th day of February, 2001.






                                       /s/ John J. Schiff, Jr.
                                       -----------------------
                                       John J. Schiff, Jr.

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Cinergy Corp., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 16th day of February, 2001.






                                       /s/ Mary L. Schapiro
                                       --------------------
                                       Mary L. Schapiro

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Cinergy Corp., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 16th day of February, 2001.






                                       /s/ Thomas E. Petry
                                       -------------------
                                       Thomas E. Petry

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Cinergy Corp., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 19th day of February, 2001.






                                       /s/ George C. Juilfs
                                       --------------------
                                       George C. Juilfs

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of Cinergy Corp., the Form 10-K Annual
Report of said corporation for the fiscal year ended December 31, 2000, and to
deliver said Form 10-K Annual Report so signed for filing with the Securities
and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 16th day of February, 2001.






                                       /s/ Phillip R. Cox
                                       ------------------
                                       Phillip R. Cox

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of each of Cinergy Corp. and PSI Energy,
Inc., the Form 10-K Annual Report of each corporation for the fiscal year ended
December 31, 2000, and to deliver said Form 10-K Annual Reports so signed for
filing with the Securities and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 22nd day of February, 2001.





                                       /s/ John A. Hillenbrand II
                                       --------------------------
                                       John A. Hillenbrand II

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of each of Cinergy Corp. and PSI Energy,
Inc., the Form 10-K Annual Report of each corporation for the fiscal year ended
December 31, 2000, and to deliver said Form 10-K Annual Reports so signed for
filing with the Securities and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 19th day of February, 2001.





                                       /s/ Michael G. Browning
                                       -----------------------
                                       Michael G. Browning

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of each of Cinergy Corp. and PSI Energy,
Inc., the Form 10-K Annual Report of each corporation for the fiscal year ended
December 31, 2000, and to deliver said Form 10-K Annual Reports so signed for
filing with the Securities and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 24th day of February, 2001.





                                       /s/ James K. Baker
                                       ------------------
                                       James K. Baker

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of each of The Cincinnati Gas & Electric
Company and The Union Light, Heat and Power Company, the Form 10-K Annual Report
of each corporation for the fiscal year ended December 31, 2000, and to deliver
said Form 10-K Annual Reports so signed for filing with the Securities and
Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 16th day of February, 2001.





                                       /s/ James L. Turner
                                       -------------------
                                       James L. Turner

<PAGE>

                                POWER OF ATTORNEY


         KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints James E. Rogers, R. Foster Duncan, Charles J. Winger, and each of them,
with full power to act without the other, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution and
resubstitution, to execute for and on behalf of the undersigned, in the
undersigned's capacity as a director of The Cincinnati Gas & Electric Company,
the Form 10-K Annual Report of said corporation for the fiscal year ended
December 31, 2000, and to deliver said Form 10-K Annual Report so signed for
filing with the Securities and Exchange Commission.

         The undersigned does hereby ratify and confirm all that said
attorneys-in-fact and agents, and each of them, shall lawfully do by virtue
hereof.

         IN WITNESS WHEREOF, the undersigned has hereunto caused this Power of
Attorney to be executed on this 22nd day of February, 2001.





                                       /s/ J. Joseph Hale, Jr.
                                       -----------------------
                                       J. Joseph Hale, Jr.