AMENDED AND RESTATED

                            CERTIFICATE OF FORMATION

                                       OF

                           BROWNSVILLE POWER I, L.L.C.


     This Amended and Restated  Certificate of Formation of Brownsville Power I,
L.L.C. (the "Company"), dated June 18, 2001, is being duly executed and filed by
Michael J.  Cyrus,  a person  authorized  by  resolution  of  Cinergy  Capital &
Trading,  Inc., a Delaware corporation,  as Sole Member of the Company, to amend
and restate the  Certificate of Formation of the Company filed on July 13, 1998,
as amended and restated on December 22, 1998, as further amended and restated on
May 21, 1999, and amended on February 2, 2001, in accordance with Section 18-208
of the Delaware Limited  Liability  Company Act (as the same may be amended from
time to time).

                                    ARTICLE I

                                      NAME

             The name of the Company is Brownsville Power I, L.L.C.


                                   ARTICLE II

                       REGISTERED OFFICE, REGISTERED AGENT

     The initial  registered office of the Company shall be: c/o The Corporation
Trust Company, 1209 Orange Street,  Wilmington,  New Castle County, Delaware, or
such other  location  as the  Company by consent  shall  determine.  The initial
registered  agent of the Company shall be: The Corporation  Trust Company,  1209
Orange Street,  Wilmington,  New Castle County, Delaware, or such other location
as the Company by consent shall determine.  Either the registered  office or the
registered agent may be changed in the manner provided by law.

                                   ARTICLE III

                               PERIOD OF DURATION

     The Company shall exist until dissolved according to law or by the terms of
its Limited Liability Company Agreement (the "LLC Agreement").

                                   ARTICLE IV

                                     POWERS

     Except as restricted  by the  Certificate  of Formation,  the Company shall
have and may exercise all powers and rights  which a limited  liability  company
may exercise legally pursuant to the Act.

                                    ARTICLE V

                                   AMENDMENTS

     The Company  reserves the right to amend this Certificate of Formation from
time to time in accordance with the Act,  provided,  that the unanimous approval
of the members of the Company to such amendment has been duly obtained.


     The undersigned does hereby certify,  make and acknowledge this Amended and
Restated Certificate of Formation on this 18th day of June 2001.


                            Cinergy Capital & Trading, Inc., Sole Member of
                            Brownsville Power I, L.L.C.


                            /s/ Michael J. Cyrus
                            --------------------
                            Michael J. Cyrus
                            President