Exhibit 10.1

                             FIRST AMENDMENT TO THE
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                       INDIANAPOLIS POWER & LIGHT COMPANY
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                SUPPLEMENTAL RETIREMENT PLAN AND TRUST AGREEMENT
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                   FOR A SELECT GROUP OF MANAGEMENT EMPLOYEES
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                          (AS LAST AMENDED AND RESTATED
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                           EFFECTIVE JANUARY 1, 1999)
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         Pursuant to Section  12.01 of the  Indianapolis  Power & Light  Company
Supplemental  Retirement  Plan  and  Trust  Agreement  for  a  Select  Group  of
Management  Employees  (the  "Plan"),  as last  amended and  restated  effective
January 1, 1999, the Compensation  Committee of the Board of Directors of IPALCO
Enterprises,  Inc. ("Compensation  Committee") hereby amends Section 4.01 of the
Plan to read in its entirety, as follows:

         Section 4.01.  Entitlement  to  Retirement  Benefits .  Entitlement  to
Retirement  Benefits . A  Participant  who retires or otherwise  terminates  his
employment  with the Employer for reasons other than his death shall be entitled
to receive monthly supplemental pension benefits under this Plan only if:

                  (a) his employment with the Employer terminates on or after
                      his attainment of the Normal Retirement Age,

                  (b) his employment with the Employer terminates by reason of
                      his incurring a Total Disability, or

                  (c) his employment with the Employer terminates after his
                      completion of at least one (1) Year of Service.

The amount of the  monthly  supplemental  pension  benefits to which an eligible
Participant is entitled upon his  retirement or other  termination of employment
shall be equal to the Vested Portion of his Post-Tax Adjusted Benefit; provided,
however,  that the amount of a Participant's  Post-Tax Adjusted Benefit shall be
redetermined each January 1; provided,  further, that under no circumstances may
the Post-Tax  Adjusted  Benefit payable to a Participant be less than the Vested
Portion of his Adjusted  Accrued Benefit as determined on February 29, 1996. The
non-Vested  Portion  of a  Participant's  Post-Tax  Adjusted  Benefit  shall  be
governed by Section 4.02.  The monthly  payments  shall begin on the first (1st)
calendar day of the month  coinciding with or next following the date on which a
Participant  attains  his  Normal  Retirement  Age or,  if  later,  the date his
employment with the Employer is terminated and shall continue  through the month
in which his death occurs; provided, however, that if a Participant's employment
with the Employer is terminated  before his attainment of the Normal  Retirement
Age, he may elect with the consent of the Company to have his benefits  begin on
the  first  (1st)  calendar  day of the  month  following  the date on which his
employment with the Employer is terminated or, if later,  the first (1st) day of
the calendar month immediately  following his attainment of age fifty-five (55).
If benefit  payments to a Participant  begin before his attainment of the Normal
Retirement Age, the amount of such Participant's  monthly  supplemental  pension
benefits  shall be reduced to the extent and in the same manner as such payments
would be reduced if made from the Company  Retirement Plan;  provided,  however,
that  notwithstanding  anything  contained  in this Section to the  contrary,  a
Participant:

                  (a)  who is:

                      (i)  a Senior Executive Officer or

                      (ii) an Other Executive Officer specifically designated
                           by the Compensation Committee, and

                  (b)  who at the date of his employment termination with the
                       Employer is at least age fifty-five (55) and has
                       completed at least thirty (30) years of Service

shall  be  eligible  to  elect  the  immediate   commencement   of  his  monthly
supplemental  pension benefits without  reduction;  provided,  further,  that an
Other  Executive  Officer  whose  combined  age and  Service  at the date of his
employment termination with the Employer is at least eighty-five (85) and who as
of his employment  termination  date has reached age fifty-five (55) but has not
reached age sixty-two (62) shall under no circumstances  have a reduction in his
monthly  supplemental  pension benefit greater than  twenty-five  one-hundredths
(0.25) for each calendar month in which the benefit  commencement  date precedes
the date on which the  Participant  would have reached age sixty-two  (62). If a
Participant  is married at the date his benefit  payments  are to  commence  and
notwithstanding  anything  contained in this Plan to the  contrary,  his monthly
benefits  shall  be paid in the  form of an  actuarially  equivalent  joint  and
survivor annuity determined in the same manner as the Joint and Survivor Annuity
Option  under  Section  205.50  of the  Company  Retirement  Plan,  unless  such
Participant,  with the  written  consent  of his  spouse  witnessed  by a Notary
Public, elects not to have his benefits paid in such form.

         Payment of benefits under this Section 4.01 shall be made in accordance
with and  consistent  with the  requirements  set forth in Section 205 of ERISA;
provided,  however,  that subject to the applicable spousal consent requirements
contained in Section 205 of ERISA,  a Participant  may elect for his benefits to
be paid in any  actuarially  equivalent form of payment which is available under
the Company Retirement Plan (other than a single lump sum payment).

                  This        First  Amendment to the Plan has been  executed on
                              this day of , 1996 and  shall be  effective  as of
                              March 1, 1996.

                             COMPENSATION COMMITTEE
                          OF THE BOARD OF DIRECTORS OF
                            IPALCO ENTERPRISES, INC.


                                            By:
                                                     /s/ Otto N. Frenzel III
                                                         Its Chairman