Exhibit 10(e)







                        CONSTELLATION ENERGY GROUP, INC.



                           SUPPLEMENTAL BENEFITS PLAN















                            Effective January 1, 2000









                        CONSTELLATION ENERGY GROUP, INC.

                           SUPPLEMENTAL BENEFITS PLAN


1.   Objective.  The objective of this Plan is to enhance the benefits  provided
     to certain officers and key employees of Constellation Energy Group and its
     subsidiaries in order to attract and retain talented executive personnel.

2.   Definitions.  All words  beginning  with an initial  capital letter and not
     otherwise  defined  herein  shall have the meaning set forth in the Pension
     Plan.  All singular  terms defined in this Plan will include the plural and
     vice  versa.  As used  herein,  the  following  terms will have the meaning
     specified below:

     "Average Incentive Award" (or "Average Award") means the two highest of the
     participant's five immediately prior year awards earned under Constellation
     Energy  Group's  Executive  Annual  Incentive  Plan,  Constellation  Energy
     Group's  Senior   Management  Annual  Incentive  Plan  and/or  the  Results
     Incentive Awards Program.

     "Committee"  means the Committee on Management of the Board of Directors of
     Constellation Energy Group.

     "Constellation  Energy Group" means  Constellation  Energy  Group,  Inc., a
     Maryland corporation, or its successor.

     "Constellation  Energy Group's  Executive Annual Incentive Plan" means such
     plan or other  incentive plan or  arrangement  designated in writing by the
     Plan Administrator.

     "Constellation  Energy Group's Senior  Management  Annual  Incentive  Plan"
     means  such  plan or other  incentive  plan or  arrangement  designated  in
     writing by the Plan Administrator.

     "Income  Replacement  Percentage"  means the percentage  under the LTD Plan
     that is used to calculate the participant's actual LTD Plan benefit.

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     "LTD Plan" means the Constellation  Energy Group, Inc. Disability Insurance
     Plan as may be amended from time to time, or any successor plan.

     "Pension Plan" means the Pension Plan of Constellation  Energy Group,  Inc.
     as may be amended from time to time, or any successor plan.

     "Plan Administrator" means, as set forth in Section 3, the Committee.

     "Results  Incentive  Awards  Program"  means the  program(s)  designated in
     writing by the Plan  Administrator  applicable  to certain  employees  that
     provides awards;  but includes only the types of awards that are includable
     in the computation of Pension Plan benefits.

3.   Plan  Administration.  The Committee is the Plan Administrator and has sole
     authority (except as specified otherwise herein) to interpret the Plan and,
     in  general,   to  make  all  other   determinations   advisable   for  the
     administration  of the Plan to  achieve  its stated  objective.  Appeals of
     written  decisions  by the Plan  Administrator  may be made to the Board of
     Directors of  Constellation  Energy Group.  Decisions by the Board shall be
     final and not subject to further appeal. The Plan Administrator  shall have
     the  power  to  delegate  all or any  part  of its  duties  to one or  more
     designees, and to withdraw such authority, by written designation.

4.   Eligibility.  Each officer or key employee of Constellation Energy Group or
     its subsidiaries may be designated in writing by the Plan  Administrator as
     a  participant  with respect to one or more benefits  under the Plan.  Once
     designated,   participation   shall  continue  until  such  designation  is
     withdrawn at the discretion and by written order of the Plan Administrator.
     Notwithstanding the foregoing, any participant while classified as disabled
     under the LTD Plan shall continue to participate in this Plan (except under
     Sections 8 and 9) while classified as disabled.

5.   Supplemental Long-Term Disability Benefit.

          (i)  Eligibility  for disability  benefits.  Any  participant  who has
               completed  at least  one full  calendar  month  of


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               service with Constellation Energy Group or its subsidiaries,  who
               has elected  coverage under the LTD Plan, and who is disabled (as
               determined  under the LTD Plan) will be entitled to  supplemental
               disability benefits under this Plan.

          (ii) Computation   of   disability   benefits.   The  amount  of  such
               supplemental disability benefits shall be determined as follows:

               (1)  multiply  the  monthly  base  rate of pay  amount  in effect
                    immediately prior to becoming entitled to benefits under the
                    LTD Plan by twelve,

               (2)  add the Average Incentive Award to the product,

               (3)  add certain  bonuses and incentives that are included in the
                    computation  of Average Pay under the Pension  Plan  (except
                    that awards included in the computation of Average Incentive
                    Award shall be excluded),  earned over the last 12 months to
                    the product,

               (4)  divide the sum by 12,

               (5)  multiply   this   monthly   dollar   amount  by  the  Income
                    Replacement Percentage, and

               (6)  subtract from the product the gross monthly amount  provided
                    for the participant under the LTD Plan before such amount is
                    reduced for other benefits as set forth under the LTD Plan.

          (iii)Form of payment of disability benefits. Each participant entitled
               to   supplemental   disability   benefits  will  receive  his/her
               supplemental  disability  benefit payout in the form of a monthly
               payment.

          (iv) Amount,  timing, and source of monthly disability benefit payout.
               A participant  entitled to supplemental  disability benefits will
               receive a monthly  payment equal to the amount  determined  under
               (ii) above.  Such  payments  shall  commence  effective  with the
               commencement  of the  participant's  LTD Plan  benefit  payments.
               Monthly  payments shall  permanently  cease when benefit payments
               under the LTD Plan cease. Monthly payments

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               shall be made from Constellation Energy Group's general corporate
               assets.

               If a participant  receiving  payments  pursuant to this Section 5
               receives cost of living or other inflation/indexing adjustment(s)
               under the LTD Plan, the payments  hereunder will be automatically
               increased  based on the same  percentage of, and at the same time
               as, such adjustment(s).

          (v)  Bonus.  Any  participant  who has less than ten years of Credited
               Service shall be entitled to a monthly taxable cash bonus,  equal
               to an amount  based on the cost of LTD Plan  coverage,  using the
               formula  for  computing   Constellation   Energy   Group-provided
               Flexible  Benefits  Plan credits for LTD Plan coverage and taking
               into  account  the  Participant's  Credited  Service  and covered
               compensation.   Such  cash  bonus  shall  be  made  from  general
               corporate assets.

6.   Death Benefit. Constellation Energy Group shall make arrangements,  through
     its split-dollar  life insurance  program or otherwise,  for life insurance
     coverage for each  participant  who had a split-dollar  policy in effect on
     April 1, 2000 and who does not have a split-dollar  policy under the Senior
     Executive  Supplemental Plan, providing that the participant's  beneficiary
     shall  receive,  as a  pre-retirement  death  benefit,  an amount  which is
     approximately equal to three times the participant's compensation in effect
     on April 1, 2000, and as a post-retirement  death benefit,  an amount which
     is  approximately  equal to two times  the  participant's  compensation  in
     effect on April 1, 2000, as set forth in a separate  agreement  between the
     participant and his/her employer.

     As determined  in the sole  discretion  of the Plan  Administrator,  in the
     event that either (i) a  participant  is  ineligible to receive the type of
     life insurance  coverage provided to other participants under this Plan, or
     (ii) such coverage is not available on reasonably cost-effective terms as a
     result of any penalty for smoking or other  factors  that are  reflected in
     the  insurance  carrier's  rates,  then  Constellation  Energy  Group shall
     provide a benefit that, in the  discretion  of the Plan  Administrator,  is
     substantially  equivalent  to the  cost of the  benefit  provided  to other
     participants under this Plan.

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7.   Dependent Death Benefit. For a participant with a split-dollar policy under
     Section 6 and who is not eligible to  participate in  Constellation  Energy
     Group's  Employee  Life  Insurance  Plan,  in the  event of the  death of a
     participant's  qualified  dependent  while  the  participant  is an  active
     employee of  Constellation  Energy Group or a subsidiary  of  Constellation
     Energy Group, Constellation Energy Group shall make a death benefit payment
     to the participant,  from general  corporate  assets.  For purposes of this
     Section 7, qualified  dependent shall have the same meaning as set forth in
     Constellation  Energy Group's  Family Life Insurance  Plan. For purposes of
     this  Section  7, the  amount of the  death  benefit  payment  shall be the
     highest  amount of  insurance  that would have been payable with respect to
     such qualified  dependent if coverage had been provided under Constellation
     Energy  Group's Family Life  Insurance  Plan.  The dependent  death benefit
     payment under this Plan shall be grossed-up for income tax withholding.

8.   Sickness Benefit.  Each  participant,  without regard to length of service,
     shall be entitled to the greater of the benefits  stipulated  under his/her
     employer's  sick benefit  policy for employees or twenty-six  (26) weeks of
     paid sick benefits within a rolling 52-week period.

9.   Vacation Benefit.  Each  participant,  without regard to length of service,
     shall be entitled to the greater of the benefits  stipulated  under his/her
     employer's  vacation  benefit  policy for  employees  or five weeks of paid
     vacation during a calendar year.

10.  Planning  Benefit.  Each participant  shall be entitled to certain personal
     financial,  tax, and estate  planning  services  paid for by  Constellation
     Energy Group but  provided  through  designated  professional  firms.  This
     entitlement  shall be subject to any dollar  limitation  established by the
     Plan  Administrator  with respect to all such fees.  The services  shall be
     provided to each  participant by the chosen  firm(s) on a personalized  and
     confidential  basis;  and each  firm  shall  have sole  responsibility  for
     quality of the  services  which it may render.  The services to be provided
     shall be on an on-going and continuous  basis,  but shall be limited to (i)
     the development and legal documentation of both career-oriented

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     financial  plans  and  personal  estate  plans,  and  (ii)  tax  counseling
     regarding  personal  tax  return  preparation  and  the  most  advantageous
     structuring, tax-wise, of proposed personal transactions.

     Such planning benefit shall continue during the year of retirement plus the
     next two calendar years (the year of retirement plus the next calendar year
     for January 1  retirements)  and include the  completion of the federal and
     state  personal  tax  returns  for  the  second   calendar  year  following
     retirement   (the  calendar  year   following   retirement  for  January  1
     retirements).  However, if a retired member of senior management  continues
     to serve as a member  of the Board of  Directors  of  Constellation  Energy
     Group,  his/her  planning  benefit period shall be extended until he/she no
     longer serves as a member of the Board of Directors.

     Upon the death of a participant  entitled to the planning  benefit provided
     hereunder,  his/her  surviving  spouse  shall be  entitled  to receive  the
     following planning benefit: (i) if the deceased was not retired at the time
     of death,  the surviving  spouse shall be entitled to the planning  benefit
     for the year in which the death occurred plus the next two calendar  years,
     including  completion of the federal and state personal tax returns for the
     second calendar year after the year in which the death occurred; or (ii) if
     the deceased was retired at the time of death,  then the  surviving  spouse
     shall  receive a planning  benefit  equal to that the  deceased  would have
     received  if  he/she  had not died  prior  to  expiration  of the  planning
     benefit.  The  surviving  spouse of a retired  member of senior  management
     whose death occurs  while  serving as a member of the Board of Directors of
     Constellation  Energy Group, shall be entitled to a planning benefit as set
     forth in (i) above.

     The  planning  benefit  provided  under this Plan shall be  grossed-up  for
     income tax withholding.

11.  Miscellaneous.  None of the  benefits  provided  under  this Plan  shall be
     subject to alienation or assignment by any  participant or beneficiary  nor
     shall any of them be subject to  attachment or  garnishment  or other legal
     process  except  (i) to the  extent  specially  mandated  and  directed  by
     applicable State or Federal  statute;  (ii) as requested by the participant
     or beneficiary to satisfy  income tax  withholding or liability;  and (iii)
     any policy of insurance  written by a commercial  carrier on a split-dollar
     basis shall be assignable.

     This Plan may be amended from time to time,  or suspended or  terminated at
     any time, provided, however, that no amendment


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     or  termination  shall impair the rights of any  participant or beneficiary
     entitled to receive current or future payment hereunder at the time of such
     action.  All  amendments to this Plan which would  increase or decrease the
     compensation of any Officer of Constellation  Energy Group, either directly
     or  indirectly,  must be  approved  by the  Board of  Directors.  All other
     permissible  amendments  may  be  made  at  the  written  direction  of the
     Committee.

     Participation  in this Plan shall not  constitute a contract of  employment
     between  Constellation Energy Group or a subsidiary of Constellation Energy
     Group and any person and shall not be deemed to be consideration  for, or a
     condition of, continued employment of any person.

     Except for benefits, if any, provided through life insurance policies under
     Section 6, all  payments  made  under the Plan  shall be made from  general
     corporate  assets.  The Plan,  is intended to be unfunded  for  purposes of
     Title I of the Employee  Retirement  Income  Security  Act of 1974.  To the
     extent  that  any  person  acquires  a  right  to  receive   payments  from
     Constellation Energy Group under this Plan, such rights shall be no greater
     than the right of any unsecured  general creditor of  Constellation  Energy
     Group.

     In the  event  Constellation  Energy  Group  becomes  a party to a  merger,
     consolidation,  sale  of  substantially  all of  its  assets  or any  other
     corporate  reorganization in which  Constellation  Energy Group will not be
     the  surviving  corporation  or in which the holders of the common stock of
     Constellation  Energy Group will receive securities of another  corporation
     (in any such case,  the "New  Company"),  then the New Company shall assume
     the rights and obligations of Constellation Energy Group under this Plan.

     This Plan shall be governed in all respects by Maryland law.

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