Exhibit 10(c)











                        CONSTELLATION ENERGY GROUP, INC.



                            SUPPLEMENTAL PENSION PLAN

















                            Effective January 1, 2000










                                TABLE OF CONTENTS


Page No.

1. Objective                                                          1

2. Definitions                                                        1

3. Plan Administration                                                4

4. Eligibility                                                        4

5.       Supplemental Pension Benefit                                 5
         (a)      Generally                                           5
         (b)      Retirement benefits                                 5
                  (i)      Eligibility for retirement benefits        5
                  (ii)     Computation of retirement benefits         5
                  (iii)    Form of payout of retirement benefits      6
                  (iv)     Amount, timing, and source of monthly
                           retirement benefit payout                  7
                  (v)      Amount, timing, and source of lump sum
                           retirement benefit payout                  7
                  (vi)     Death of participant entitled to lump
                           sum payout                                 8
         (c)      Entitlement to benefit upon happening of
                  certain events                                      8
                  (i)      Computation of gross accrued benefit       8
                  (ii)     Computation of net accrued benefit         9
                  (iii)    Satisfaction of requirements               9
                  (iv)     Other events                               10
                           (1)      Change in control                 10
                           (2)      Plan amendment                    10
                           (3)      Involuntary Demotion, Termination
                                    From Employment With Constellation
                                    Energy Group, or eligibility
                                    withdrawal without Cause          11
                  (v)      Form of benefit payout                     11
                  (vi)     Amount, timing and source of benefit
                           payout                                     11
                  (vii)    Death of participant entitled to lump
                           sum payout                                 12




6.       Supplemental Survivor Annuity Benefit                        12
         (a)      Survivor annuity benefit                            12
                  (i)      Eligibility for survivor annuity benefit   12
                  (ii)     Computation of survivor annuity benefit    13
                  (iii)    Form of payout of survivor annuity
                           benefits                                   14
                  (iv)     Amount, timing, and source of monthly
                           survivor annuity benefit payout            14

7.       Miscellaneous                                                15








                        CONSTELLATION ENERGY GROUP, INC.

                            SUPPLEMENTAL PENSION 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:

         "Annual Base Salary"  means an amount  determined by adding the monthly
         base  rate of pay  amounts  (i.e.,  the  types  of such  pay  that  are
         includable in the computation of Pension Plan  benefits)earned over the
         twelve  calendar months  immediately  preceding the month that includes
         the date of the computation.

         "Average  Incentive  Award" (or "Average  Award")  means  generally the
         product of the percentage equal to an average of the two highest of the
         participant's  five  immediately  prior year award  percentages  earned
         under  Constellation  Energy Group's  Executive  Annual Incentive Plan,
         Constellation  Energy Group's Senior  Management  Annual Incentive Plan
         and/or other Incentive Awards Program  multiplied by the  participant's
         annualized  base rate of pay amount  (i.e.,  the types of such pay that
         are  includable in the  computation of Pension Plan benefits) in effect
         at the end of the prior year.

         "Benefit  Start  Date"  means  the date as of which  the  participant's
         benefits, if any, under this Plan commence.

         "Cause"   means  the   participant's   (a)   failure  to  comply   with
         Constellation Energy Group policy, (b) deliberate and continual refusal
         to  satisfactorily   perform   employment  duties  on  substantially  a
         full-time  basis,  (c)  deliberate  and  continual  refusal  to  act in
         accordance   with  any   specific   instructions   of  a  majority   of
         Constellation  Energy  Group's  Board  of  Directors,  (d)  disclosure,
         without the consent of a






          majority  of  Constellation  Energy  Group's  Board of  Directors,  of
          confidential  information  or trade secrets  concerning  Constellation
          Energy  Group which  could be  materially  damaging  to  Constellation
          Energy Group, or (e) deliberate  misconduct  which could be materially
          damaging to Constellation  Energy Group without  reasonable good faith
          belief by the  participant  that such conduct was in the best interest
          of Constellation Energy Group.

         "Change  in  Control"  means (a) the  purchase  or  acquisition  by any
         person,  entity or group of  persons,  (within  the  meaning of Section
         13(d) or 14(d) of the  Securities  Exchange Act of 1934 (the  "Exchange
         Act"), or any comparable successor provisions), of beneficial ownership
         (within the meaning of Rule 13d-3  promulgated  under the Exchange Act)
         of 20 percent or more of either the outstanding  shares of common stock
         of  Constellation   Energy  Group  or  the  combined  voting  power  of
         Constellation   Energy  Group's  then  outstanding   shares  of  voting
         securities  entitled to a vote generally,  or (b) the  consummation of,
         following  the approval by the  stockholders  of  Constellation  Energy
         Group of a  reorganization,  merger,  or consolidation of Constellation
         Energy  Group,  in each case,  with  respect to which  persons who were
         stockholders of Constellation  Energy Group  immediately  prior to such
         reorganization, merger or consolidation do not, immediately thereafter,
         own more than 50 percent of the combined  voting power entitled to vote
         generally in the election of  directors of the  reorganized,  merged or
         consolidated entity's then outstanding securities, or (c) a liquidation
         or   dissolution  of   Constellation   Energy  Group  or  the  sale  of
         substantially  all of its assets, or (d) a change of more than one-half
         of the members of the Board of Directors of Constellation  Energy Group
         within a 90-day period for reasons other than the death, disability, or
         retirement of such members.

          "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.


                                        2


         "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.

         "Demotion"  means a transfer to a position  with  Constellation  Energy
         Group or a subsidiary of Constellation  Energy Group that either (a) is
         substantially  below the position in which the participant was employed
         on the date of transfer,  or (b) results in a substantial  reduction in
         pay when compared to the participant's pay on the date of the transfer.
         Whether a position is a substantially  below another  position shall be
         determined  in  the  reasonable  discretion  of  the  Committee,   with
         reference  to  factors  including   whether  the  participant   retains
         principal  responsibility for a department or division, and whether the
         participant  remains  eligible  for  the  perquisites  enjoyed  by  the
         participant before the position change.

         "Early  Receipt  Reduction  Factor" means 100% less .25% for each month
         that the participant is less than age 62 on the  participant's  Benefit
         Start Date.

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

         "Interest  Rate"  means the rate equal to the average  monthly  30-year
         Treasury  bond  rate for the  second  calendar  quarter  preceding  the
         computation  date,  less  50  basis  points.   "Internal  Revenue  Code
         Limitations" means the limitations under Sections 415 and/or 401(a)(17)
         of the Internal Revenue Code.

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

         "Mortality  Table" means the mortality table used to convert  annuities
         to lump sums in the Pension Plan.

         "Other  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



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

         "Plan"  means  this  Constellation  Energy  Group,  Inc.  Supplemental
         Pension Plan.

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

         "Rabbi  Trust" means the trust  adopted by  Constellation  Energy Group
         pursuant to the Grantor  Trust  Agreement  Dated as of April 30,  1999,
         between Constellation Energy Group and Citibank, N.A.

         "Survivor Annuity  Percentage" means 50%, unless the participant elects
         in the timing  and  manner  established  by the Plan  Administrator,  a
         higher  percentage  (in  multiples of 5% to a total  percentage  not to
         exceed 100%).

         "Termination From Employment With  Constellation  Energy Group" means a
         participant's  separation from service with Constellation  Energy Group
         or a subsidiary of Constellation Energy Group; however, a participant's
         retirement,  disability,  or  transfer  of  employment  to  or  from  a
         subsidiary  of  Constellation  Energy  Group  shall  not  constitute  a
         Termination From Employment With Constellation Energy Group.

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.  The officers or key employees of Constellation Energy
         Group or its  subsidiaries  designated in Appendix A are  participants
         under the Plan. Participation shall continue until such designation is
         withdrawn  at  the  discretion  and  by  written  order  of  the  Plan
         Administrator,

                                        4



          provided,  however,  that such withdrawal may not be made for benefits
          provided  pursuant to Sections 5 and 6 with  respect to a  participant
          who has satisfied the eligibility requirements to retire (as set forth
          in Section 5(b)(i)).  Notwithstanding  the foregoing,  any participant
          while  classified  as  disabled  under the LTD Plan shall  continue to
          participate  in this  Plan  while  classified  as  disabled  and,  for
          purposes of the  supplemental  pension benefit  provided by this Plan,
          while  classified  as disabled,  shall be deemed to continue to accrue
          Credited Service until no later than his/her Normal Retirement Date.

5.      Supplemental Pension Benefit.

        (a)    Generally.  A  participant  shall be  eligible  for  supplemental
               pension benefits and supplemental survivor annuity benefits under
               this Plan only if the participant's supplemental pension benefits
               under  this  Plan  are  greater  than  the  supplemental  pension
               benefits computed under the Executive  Benefits Plan based on the
               participant's age, service, and eligible compensation on the date
               as of which benefits become payable.

         (b)   Retirement benefits.

               (i) Eligibility for retirement  benefits.  A participant shall be
               eligible to retire under this Plan on or after the  participant's
               Normal  Retirement  Date,  or on  the  first  day  of  any  month
               preceding his/her Normal Retirement Date, if on his/her Severance
               From Service Date and while a participant he/she has attained (1)
               age 55 and has accumulated at least 10 years of Credited Service;
               or (2) age 60 and has  accumulated  at least one year of Credited
               Service.

               (ii)  Computation of retirement  benefits.  A participant  who is
               eligible   to  retire   under  this  Plan  will  be  entitled  to
               supplemental  pension retirement  benefits under this Plan, which
               will  be  calculated  as set  forth  below  on the  participant's
               Benefit Start Date:

                    (1) add the Annual  Base  Salary and the  Average  Incentive
                    Award,

                    (2) divide the sum by 12,


                                        5


                    (3)  multiply   this  dollar   amount  by  the   appropriate
                    percentage, determined as follows: Chairman of the Board and
                    President  of  Constellation  Energy  Group - 60%; all other
                    participants  (by  completed  years of  Credited  Service) 1
                    through 9 - 3% per year;  10 through 19 - 40%; 20 through 24
                    - 45%; 25 through 29 - 50%; and 30 or more - 55%,

                    (4)  multiply  this  dollar  amount  by  the  Early  Receipt
                    Reduction Factor;  provided,  however, if the participant is
                    age 62 or older, such factor shall be one (1),

                    (5) subtract from this dollar amount the charges relating to
                    coverage for a preretirement  survivor  annuity in excess of
                    50%, and for a post-retirement survivor annuity in excess of
                    50%, and

                    (6) subtract from the  remainder  the net amount  payable to
                    the participant  under the Pension Plan when the participant
                    actually   commences  such  monthly  Pension  Plan  payments
                    (assuming a 50%  spousal  joint and  survivor  annuity for a
                    married  participant),  or, if the participant elects a lump
                    sum  under  the PEP  provisions  of the  Pension  Plan,  the
                    monthly  amount  that  would  have  been  payable  under the
                    Pension Plan as a life annuity for a single  participant  or
                    as a 50% spousal  joint and  survivor  annuity for a married
                    participant, as of the Benefit Start Date under this Plan.

               (iii) Form of payout of  retirement  benefits.  Each  participant
               entitled to supplemental pension retirement benefits will receive
               his/her  supplemental  pension retirement  benefits payout in the
               form of a monthly payment,  unless the participant  makes a valid
               election  to  receive  his/her  supplemental  pension  retirement
               benefits payout in the form of a lump sum.

               A participant may elect to receive his/her  supplemental  pension
               retirement  benefits  payout  in  the  form  of  a  lump  sum  by
               submitting to the Plan


                                        6


               Administrator  a signed Lump Sum Election  Form. The Form must be
               received by the Plan  Administrator  before the  beginning of the
               calendar  year  during  which the  participant's  Severance  From
               Service  Date  occurs.  The  election  may be revoked at any time
               before  the  beginning  of the  calendar  year  during  which the
               participant's  Severance From Service Date occurs,  by submitting
               to the Plan Administrator a signed Lump Sum Revocation Form.

               (iv) Amount,  timing,  and source of monthly  retirement  benefit
               payout. A participant  entitled to monthly  supplemental  pension
               retirement  benefits will receive  monthly  payments equal to the
               amount  determined under paragraph  (b)(ii).  Such payments shall
               commence  effective  with the  first of the month  following  the
               participant's  Severance  From Service Date. If such  participant
               receives (or would have  received  but for the  Internal  Revenue
               Code Limitations) cost of living  adjustment(s) under the Pension
               Plan,  the  monthly  payments  hereunder  will  be  automatically
               increased  based on the  percentage  of, and at the same time as,
               such adjustment(s).  Monthly payments hereunder shall permanently
               cease  upon the  death  of the  participant,  effective  with the
               monthly  payment  for  the  month  following  the  month  of  the
               participant's  death. Monthly payments hereunder shall be made in
               accordance  with the  provisions  of the Rabbi  Trust and, to the
               extent not paid under the terms of the Rabbi Trust,  from general
               corporate assets.

               (v) Amount,  timing,  and source of lump sum  retirement  benefit
               payout. A participant entitled to a lump sum supplemental pension
               retirement benefit will receive a lump sum payment. This lump sum
               payment  will be  calculated  by a certified  actuary and will be
               equal to the present value of an immediate  annuity including the
               estimated present value of post-retirement  supplemental survivor
               annuity  benefits  described  in  Section 6, and  reflecting  the
               present value of any deferred Pension Plan payments using (1) the
               supplemental  pension  retirement benefit amount calculated under
               paragraph  (b)(ii),  which is expressed as a monthly amount,  (2)
               the Interest Rate computed on the

                                        7



               participant's  Benefit Start Date,  and (3) the Mortality  Table.
               Such lump sum  payment  shall be made  within  60 days  after the
               participant's Retirement Date. The lump sum payment shall be made
               in accordance  with the provisions of the Rabbi Trust and, to the
               extent not paid under the terms of the Rabbi Trust,  from general
               corporate  assets.  A participant who receives a lump sum payment
               shall not be  entitled  to any cost of  living  or other  pension
               payment  adjustments  or  to  post-retirement   survivor  annuity
               coverage under the Plan.

               (vi) Death of  participant  entitled to lump sum  payout.  In the
               event of the death of a participant  after his/her Severance From
               Service  Date and before the  participant  receives  the lump sum
               payment under  paragraph  (b)(v),  such lump sum payment shall be
               made to the participant's surviving spouse (as defined in Section
               6(i)).  The lump sum payment shall be the same amount and made at
               the same time and from the same sources as set forth in paragraph
               (b)(v).  If  there  is no  surviving  spouse  at the  date of the
               participant's  death,  no  payments  shall  be made  pursuant  to
               Sections  5 or 6. A  surviving  spouse  who  receives  a lump sum
               benefit under this paragraph (b)(vi) shall not be entitled to any
               cost  of  living  or  other  pension  payment  adjustments  or to
               post-retirement survivor annuity coverage under the Plan.


     (c) Entitlement to benefit upon happening of certain events.

          (i) Computation of gross accrued benefit. The computation of the gross
          accrued  supplemental pension benefit for a participant as of the date
          of the computation will be made as follows:

               (1) add the Annual Base Salary and the Average Incentive Award,

               (2) divide the sum by 12, and

               (3) multiply  this dollar amount by the  appropriate  percentage,
               determined  as follows:  Chairman of the Board and  President

                                        8



               of Constellation  Energy Group - 60%; all other  participants (by
               completed  years  of  Credited  Service  as of  the  date  of the
               computation)  1 through 9 - 3% per year;  10 through 19 - 40%; 20
               through 24 - 45%; 25 through 29 - 50%; and 30 or more - 55%.

          (ii)  Computation of net accrued  benefit.  The computation of the net
          accrued  supplemental pension benefit for a participant as of the date
          of the computation  will be made by subtracting from the gross accrued
          benefit   determined   under  paragraph   (c)(i)  the  amount  of  the
          participant's  Gross Pension  under the Pension Plan  determined as of
          the date of the computation and assuming that monthly payments of such
          Gross  Pension  begin on the  first of the  month  after  the later of
          reaching age 62 or the date of the computation.  If the participant is
          not eligible for payment of a Gross  Pension  under the Pension  Plan,
          the participant's  Accrued Gross Pension  determined as of the date of
          the computation  shall be substituted for the Gross Pension  described
          above, with the appropriate  reduction for early receipt applied as if
          the  participant  were  eligible to begin payment of his Accrued Gross
          Pension on the first of the month after the later of  reaching  age 62
          or the date of the computation.

          (iii)Satisfaction of requirements. A participant who has satisfied the
          age and Credited  Service  requirements  set forth in Section  5(b)(i)
          while  eligible  as set  forth in  Section  4,  but who the  Committee
          determines does not retire under the Plan due to Demotion, Termination
          From Employment With Constellation  Energy Group, or the withdrawal of
          a participant's  eligibility to participate  under Section 5, shall be
          entitled to his/her  net accrued  supplemental  pension  benefit.  The
          effective  date of the  Demotion,  Termination  From  Employment  With
          Constellation  Energy Group, or eligibility  withdrawal event shall be
          the  date  of  such  Demotion,   Termination   From   Employment  With
          Constellation Energy Group, or eligibility withdrawal.


                                        9


          (iv) Other events. A participant,  regardless of his/her age and years
          of  Credited  Service,  shall  be  entitled  to  his/her  net  accrued
          supplemental  pension  benefit  upon  the  happening  of  any  of  the
          following  entitlement  events,  but  only if such  entitlement  event
          occurs while a participant and before a participant retires under this
          Plan:

                           (1)      Change  in  Control.  A Change  in  Control,
                                    followed    within    two   years   by   the
                                    participant's   Demotion,   a  participant's
                                    Termination     From     Employment     With
                                    Constellation    Energy   Group,    or   the
                                    withdrawal of the participant's  eligibility
                                    to   participate   under  the  Plan,  is  an
                                    entitlement event. The effective date of the
                                    entitlement  event  shall be the date of the
                                    Demotion,  Termination  From Employment With
                                    Constellation  Energy Group,  or eligibility
                                    withdrawal.

                           (2)      Plan  amendment.  A Plan  amendment that has
                                    the effect of reducing a participant's gross
                                    accrued  supplemental  pension benefit is an
                                    entitlement  event.  In determining  whether
                                    such   a   reduction   has   occurred,   the
                                    participant's  gross  accrued   supplemental
                                    pension   benefit   calculated  on  the  day
                                    immediately  preceding the effective date of
                                    the  amendment  shall  be  compared  to  the
                                    participant's  gross  accrued   supplemental
                                    pension benefit  calculated on the effective
                                    date of the amendment. An amendment that has
                                    the  effect  of  reducing   future   benefit
                                    accruals is not an entitlement  event. It is
                                    intended  that an  entitlement  event  under
                                    this  paragraph  (c)(iv)(2)  will occur only
                                    with  respect to those  amendments  that are
                                    substantially similar to amendments that are
                                    prohibited by Internal  Revenue Code section
                                    411(d)(6) with respect to qualified  pension
                                    plans. The effective date of the entitlement
                                    event  shall  be the  effective  date of the
                                    Plan amendment.


                                       10



                           (3)      Involuntary   Demotion,   Termination   From
                                    Employment With Constellation  Energy Group,
                                    or eligibility  withdrawal  without Cause. A
                                    participant's    involuntary   Demotion   or
                                    involuntary Termination From Employment With
                                    Constellation Energy Group without Cause, or
                                    the    withdrawal    of   a    participant's
                                    eligibility to participate  under Sections 5
                                    or  6 of  the  Plan  without  Cause,  is  an
                                    entitlement event. The effective date of the
                                    entitlement  event  shall  be the  effective
                                    date   of  the   participant's   involuntary
                                    Demotion  or  involuntary  Termination  From
                                    Employment With  Constellation  Energy Group
                                    without Cause, or the eligibility withdrawal
                                    without Cause.

          (v) Form of benefit  payout.  Each  participant  entitled  to a payout
          under this  paragraph  (c) will  receive  such payout in the form of a
          lump sum payment.

          (vi)  Amount,  timing,  and source of benefit  payout.  A  participant
          entitled to a payout of his/her net  accrued  benefit,  as a result of
          the  occurrence  of  an  event   described  in  paragraphs   (c)(iii),
          (c)(iv)(1),  (2), or (3) will be entitled to a lump sum benefit.  This
          lump sum benefit  will be  calculated  by a  certified  actuary as the
          present  value,  determined  as of the date of payment,  of an annuity
          beginning  at  age  62  (or  the  participant's  actual  age,  if  the
          participant  is older than age 62 on the date the lump sum  benefit is
          payable),  including  the estimated  present value of  post-retirement
          survivor  annuity  benefits  described in Section 6, using (1) the net
          accrued  benefit  amount  calculated  under  paragraph  (d)(ii) on the
          effective  date of the  entitlement  event,  which is  expressed  as a
          monthly  amount,  (2) the Interest  Rate computed on the date the lump
          sum  benefit is payable,  and (3) the  Mortality  Table.  The lump sum
          benefit  shall  be  payable  as of the  participant's  Severance  From
          service  Date,  and shall be made  within 60 days  after  such date in
          accordance  with the  provisions of the Rabbi Trust and, to the extent
          not paid under the terms of the Rabbi Trust,  from  general  corporate
          assets.  A  participant  who  receives a lump sum  benefit  under this
          paragraph (c)(vi) shall not be entitled to


                                       11


          any  cost  of  living  or  other  pension  payment  adjustments  or to
          preretirement or post-retirement survivor annuity coverage.


          (vii) Death of participant  entitled to lump sum payout.  In the event
          of the  death  of a  participant  after  the  occurrence  of an  event
          described in paragraphs (c)(iii),  (c)(iv)(1),  (2), or (3) and before
          the participant  receives the lump sum payment under paragraph (c)(v),
          such lump sum  payment  shall be made to the  participant's  surviving
          spouse (as  defined in Section  6(i)).  The lump sum  payment  will be
          calculated  by a  certified  actuary  and will be equal to 100% of the
          lump sum that would have been paid to the participant  under paragraph
          (vi),  as of the date on which  the lump  sum is  payable  under  this
          paragraph (vii),  provided that the participant's  date of death is on
          or after his/her  Severance  From Service  Date. If the  participant's
          date of death is before his/her Severance From Service Date, 50% shall
          be  substituted  for  100% in the  preceding  sentence.  The  lump sum
          benefit  shall  be  payable  as of the  earlier  of the  participant's
          Severance From Service Date or date of death, and shall be made within
          60 days after such date in accordance with the provisions of the Rabbi
          Trust and, to the extent not paid under the terms of the Rabbi  Trust,
          from general  corporate assets. If there is no surviving spouse at the
          date of the participant's death, no payments shall be made pursuant to
          Sections 5 or 6. A  surviving  spouse who  receives a lump sum benefit
          under this  paragraph  (c) (vii)  shall not be entitled to any cost of
          living or other pension  payment  adjustments or to  preretirement  or
          post-retirement survivor annuity coverage under the Plan.

6.       Supplemental Survivor Annuity Benefit.

         (a)      Survivor annuity benefit.

               (i) Eligibility for survivor annuity benefit. Following the death
               of a  participant  (other than a  participant  who  satisfied the
               requirements   of  Section   5(e)(i)   upon  such   participant's
               Termination From Employment With  Constellation  Energy Group)who
               is fully vested under the Pension


                                       12



               Plan,a   supplemental   survivor  annuity  may  be  paid  to  the
               participant's  surviving  spouse  until the death of that spouse,
               using the Survivor Annuity  Percentage.  The participant will not
               bear the cost of up to a 50% survivor annuity  benefit,  but will
               bear the cost of a survivor annuity benefit in excess of 50%. For
               purposes of this Section 6(a), a participant's  surviving  spouse
               is the individual  married to the  participant on the date of the
               participant's  death. If there is no surviving  spouse, or if the
               participant or the participant's spouse previously received or is
               entitled  to  receive  a lump sum  payment  under  Section  5, no
               supplemental survivor annuity will be payable.


               (ii) Computation of survivor annuity  benefit.  The amount of the
                    supplemental survivor annuity will be determined as follows:

                    (1)  if the participant's  Benefit Start Date occurred prior
                         to the date of death:

                    (a) begin with the monthly  pension  benefit  (under Section
                    5(b) of this Plan) that the  participant was receiving prior
                    to the date of death, and

                    (b)  multiply  this dollar  amount by the  Survivor  Annuity
                         Percentage.

                    (2) otherwise:

                    (a) begin with the monthly Early Retirement  pension benefit
                    (under both the Pension  Plan and Section 5(b) of this Plan)
                    to which the participant would have been entitled to receive
                    if the:

                    the  participant  had been retired at the later of age 60 or
                    his/her  actual  age on the date of death  for  purposes  of
                    computing the Early Receipt Reduction Factor,

                    (b)  multiply  this dollar  amount by the  Survivor  Annuity
                    Percentage,

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                    (c) subtract from the product the net amount, if any, of the
                    survivor annuity provided on behalf of the participant under
                    the Pension Plan if the participant is  participating in the
                    Traditional  Pension Plan, or the monthly annuity that would
                    have been provided to the participant's spouse assuming that
                    he  or  she  had  been   designated  as  the   participant's
                    beneficiary and had chosen to receive a survivor  benefit in
                    the  form  of a  monthly  annuity,  if  the  participant  is
                    participating in the PEP, and

                    (d) subtract from this dollar amount the charges relating to
                    coverage  (under both the Pension  Plan and this Plan) for a
                    preretirement  survivor  annuity in excess of 50%, and for a
                    post-retirement survivor annuity in excess of 50%.

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

          (iv) Amount,  timing,  and source of monthly  survivor annuity benefit
          payout. A surviving spouse entitled to monthly  supplemental  survivor
          annuity  benefits  will receive a monthly  payment equal to the amount
          determined  under (ii) above.  Such payments shall commence  effective
          with  the  first  day  of  the  month   following  the  month  of  the
          participant's  death. If such surviving spouse receives (or would have
          received but for the Internal Revenue Code Limitations) cost of living
          adjustment(s)  under the Pension Plan, the monthly payments  hereunder
          will be automatically increased based on the percentage of, and at the
          same time as, such  adjustment(s).  Monthly  payments  hereunder shall
          permanently  cease upon the death of the surviving  spouse,  effective
          with the  monthly  payment  for the month  following  the month of the
          surviving spouse's death.  Monthly payments hereunder shall be made in
          accordance with


                                       14


          the  provisions  of the Rabbi  Trust and, to the extent not paid under
          the terms of the Rabbi Trust, from general corporate assets.

7.       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;  or (ii) as requested by the
         participant  or  beneficiary  to  satisfy  income  tax  withholding  or
         liability.

         This Plan may be amended from time to time,  or suspended or terminated
         at any time, provided,  however, that no amendment or termination shall
         reduce any previously accrued  supplemental  pension benefit under this
         Plan or 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 and any person and shall
         not be deemed to be  consideration  for, or a condition  of,  continued
         employment of any person.

         The Plan,  notwithstanding the creation of the Rabbi Trust, is intended
         to be  unfunded  for  purposes  of Title I of the  Employee  Retirement
         Income  Security  Act of 1974.  Constellation  Energy  Group shall make
         contributions  to the Rabbi Trust in  accordance  with the terms of the
         Rabbi  Trust.  Any funds which may be invested and any assets which may
         be held to provide  benefits  under this Plan  shall  continue  for all
         purposes to be a part of the general funds and assets of  Constellation
         Energy Group and no person other than Constellation  Energy Group shall
         by virtue of the  provisions  of this  Plan have any  interest  in such
         funds and  assets.  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.


                                       15



         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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