Exhibit 10(b)




                        CONSTELLATION ENERGY GROUP, INC.
                 NONQUALIFIED DEFERRED COMPENSATION PLAN (PLAN)



1.   Objective  The  objective  of this  Plan is to  enable  certain  management
     employees  of  Constellation  Energy  Group and its  subsidiaries  to defer
     compensation.

2.   Definitions.  All words  beginning  with an initial  capital letter and not
     otherwise  defined  herein shall have the meaning set forth in the Employee
     Savings  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:

     "Basic  Compensation"  means such compensation as set forth in the Employee
     Savings  Plan,   without  regard  to  the  Internal  Revenue  Code  Section
     401(a)(17) annual compensation limitation.

     "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.

     "Deferred  Compensation"  means any  compensation  payable by Constellation
     Energy Group or its  subsidiaries  to a participant  that is deferred under
     the provisions of this Plan.

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

     "Executive Annual Incentive Plan" means the Executive Annual Incentive Plan
     of Constellation Energy Group, Inc. as may be amended from time to time, or
     any successor  plan,  and/or any other incentive plan designated in writing
     by the Plan Administrator.

     "Incentive  Award"  means an  award  granted  under  the  Executive  Annual
     Incentive Plan or the Senior Management Annual Incentive Plan.


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     "Matching  Contributions"  means the  matching  contributions  described in
     Section 8.

     "Plan  Accounts" means amounts of a  participant's  Deferred  Compensation,
     Matching Contributions, and earnings under the Plan.

     "Plan Administrator" means, as set forth in Section 3, the Vice President -
     Human  Resources of  Constellation  Energy  Group,  (or the  Vice-President
     succeeding to that function).

     "Rabbi Trust" means the trust  established  by  Constellation  Energy Group
     pursuant to Grantor  Trust  Agreement  dated as of April 30,  1999  between
     Constellation Energy Group and T. Rowe Price Trust Company.

     "Senior  Management  Annual  Incentive  Plan"  means the Senior  Management
     Annual Incentive Plan of Constellation Energy Group, Inc. as may be amended
     from time to time, or any successor  plan,  and/or any other incentive plan
     designated in writing by the Plan Administrator.

     "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 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 Vice President - Human Resources of Constellation
     Energy Group,  (or the  Vice-President  succeeding to that function) is the
     Plan  Administrator  and  has  the  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
     Committee.  Decisions  by the  Committee  shall be final and not subject to
     further appeal. The Plan Administrator shall have the power to



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     delegate all or any part of his/her duties to one or more designees, and to
     withdraw such authority, by written designation.

4.   Eligibility   and   Participation.   Each   officer  or  key   employee  of
     Constellation   Energy   Group  or  its   subsidiaries,   or  employees  of
     Constellation  Energy Group or its subsidiaries who hold senior  management
     level positions,  may be designated in writing by the Plan Administrator as
     eligible to  participate  with respect to one or more of the  provisions of
     Sections 5, 6, 7 and 8, which designation will also indicate whether all or
     part of such  participant's  Plan Accounts will be held in the Rabbi Trust.
     Once  designated,  eligibility  shall  continue  until such  designation is
     withdrawn at the discretion and by written order of the Plan Administrator.
     Notwithstanding  subsequent withdrawal of eligibility of an employee,  such
     an  employee  with Plan  Accounts  will remain a  participant  of the Plan,
     except  that no  further  deferrals  of  compensation  under  the  Plan are
     permitted.  While designated as eligible with respect to one or more of the
     provisions  of Sections 5, 6, 7 or 8, an employee  may  participate  in the
     Plan to the extent set forth in such designation.

5.   Basic  Compensation  Deferral  Election.  Unless  otherwise  designated  in
     writing  by  the  Plan   Administrator,   a  participant  may  defer  Basic
     Compensation  as set forth in this  Section 5. A  participant  may elect to
     defer up to 15% of monthly Basic Compensation. A participant may also elect
     to defer up to 100% of Basic Compensation,  if any, in excess of the dollar
     limitation  set forth in  Internal  Revenue  Code  Section  401(a)(17)  (as
     adjusted  by the  Commissioner  for  increases  in the  cost of  living  in
     accordance with Internal Revenue Code Section 401(a)(17)(B)). Any deferrals
     shall be in 1% multiples, subject to adjustment as necessary to provide for
     any required withholding taxes. Such election shall be made by notification
     in the form and manner  established by the Plan  Administrator from time to
     time, and shall be effective as of the beginning of the month following the
     month during which the election is received by the Plan Administrator. Such
     election may be revoked by notification in the form and manner  established
     by the Plan  Administrator  from time to time, and shall be



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     effective as of the beginning of the month following the month during which
     the revocation is received by the Plan Administrator.

6.   Incentive  Award  Deferral  Election.  A  participant  may  elect  to defer
     Incentive  Award  compensation  in 1%  multiples,  subject to adjustment as
     necessary  to provide for any required  withholding  taxes.  Such  election
     shall be made annually by notification  in the form and manner  established
     by the Plan  Administrator from time to time. Such annual election shall be
     made prior to the Incentive Award  performance year, and shall be effective
     as of the first day of such  performance  year. If a participant  initially
     becomes eligible to participate in the Plan during a performance  year, the
     election  for  such  performance  year  must be made  prior to the date the
     participant  initially  becomes  eligible to  participate  in the Plan, and
     shall  be  effective  on  such  date.  Elections  under  this  Section  are
     irrevocable once effective.

7.   Other Deferral Election. A participant may elect to defer, in 1% multiples,
     other  forms of  compensation  that are  designated  in writing by the Plan
     Administrator.   Such   election  must  be  made  prior  to  the  date  the
     compensation is earned by the participant,  by notification in the form and
     manner  established  by the Plan  Administrator  from  time to  time.  Such
     election is effective as of the date the compensation is earned.  Elections
     under this Section are irrevocable once effective.

8.   Matching  Contributions.  Matching  Contributions are made by Constellation
     Energy  Group  to the  Plan in an  amount  equal  to (i) up to the  rate of
     Company Matching  Contributions  under the Employee Savings Plan multiplied
     by a  participant's  monthly  Basic  Compensation  deferral,  less (ii) the
     amount of Company Matching  Contributions made to the Employee Savings Plan
     on behalf of such participant with respect to such month.

9.   Plan Accounts.  Deferred  Compensation and Matching  Contributions shall be
     (i) credited to participant  Plan Accounts as soon as practicable;  (ii) to
     the extent  designated by the Plan  Administrator,  held for the benefit of
     the participant in the Rabbi Trust; and



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     (iii)  credited with earnings at the T. Rowe Price Prime Reserve Fund rate.
     However,  a participant  may elect (by  notification in the form and manner
     established by the Plan  Administrator  from time to time) to have all or a
     portion of his/her Plan Accounts  credited with earnings at a rate equal to
     the T. Rowe Price  Prime  Reserve  Fund rate,  the T. Rowe Price New Income
     Fund  rate,  or one or more  of the  rates  earned  by  investment  options
     available under the Employee Savings Plan, except the Common Stock Fund and
     the Interest Income Fund. Earnings are credited to Plan Accounts commencing
     on the  day  the  Deferred  Compensation  and  Matching  Contributions  are
     credited to the Plan  Accounts.  Plan  Accounts will be valued daily in the
     same manner as for Investment Funds under the Employee Savings Plan.

     A participant may elect to change the investment  option of future Deferred
     Compensation and Matching Contributions,  which election shall be effective
     when  the  next  Deferred   Compensation   contributions   and/or  Matching
     Contributions   are  credited  to  the  participant's   Plan  Accounts.   A
     participant  may elect to reallocate to other  investment  options  current
     Plan  Accounts,  which election shall be effective at the same time as, and
     valued in accordance  with,  the interfund  transfer  provisions  under the
     Employee  Savings Plan. Such elections shall be made by notification in the
     form and manner established by the Plan Administrator from time to time.

10.  Distributions  of Plan  Accounts.  Distributions  of Plan Accounts shall be
     made in cash only, and to the extent designated by the Plan  Administrator,
     from the Rabbi Trust.

     Prior to the end of the thirtieth  (30th)  calendar day after the date of a
     participant's  Termination From Employment with Constellation Energy Group,
     such  participant  must elect the timing of  distributions  of his/her Plan
     Accounts. The participant may elect (by notification in the form and manner
     established  by  the  Plan  Administrator  from  time  to  time)  to  begin
     distributions  (i) in the calendar year  following the calendar year of the
     participant's  Termination From Employment with Constellation Energy Group,
     (ii) in the year  following  the year in which a  participant  attains



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     age 70-1/2,  if later,  or (iii) any calendar  year between (i) and (ii). A
     participant may elect (by  notification in the form and manner  established
     by the Plan Administrator from time to time) to receive  distributions in a
     single  payment  or in annual  installments  during a period  not to exceed
     fifteen  years.  The  single  payment  or the  first  installment  payment,
     whichever is applicable,  shall be made within the first sixty (60) days of
     the calendar year elected for  distribution.  Subsequent  installments,  if
     any,  shall be made  within the first  sixty  (60) days of each  succeeding
     calendar year until the participant's  Plan Accounts have been paid. In the
     event no election is made prior to the end of the thirtieth (30th) calendar
     day after the date of a  participant's  Termination  From  Employment  with
     Constellation Energy Group, a participant shall receive a distribution in a
     single  payment  within the first  sixty (60) days of the  following  year.
     Earnings are credited to Plan  Accounts  through the date of  distribution,
     and amounts held for  installment  payments  shall  continue to be credited
     with earnings, as specified in Section 9.

     If a participant  dies,  the entire unpaid balance of his/her Plan Accounts
     shall be paid to the  beneficiary(ies)  designated  by the  participant  by
     notification in the form and manner  established by the Plan  Administrator
     from time to time or, if no  designation  was  made,  to the  estate of the
     participant.  Payment  shall be made within sixty (60) days after notice of
     death is received by the Plan Administrator, unless prior to the end of the
     thirtieth  (30th)  calendar  day  after  the  date  of  the   participant's
     Termination   From  Employment  with   Constellation   Energy  Group,   the
     participant  elected  (in the  form  and  manner  established  by the  Plan
     Administrator from time to time) a delayed and/or installment  distribution
     option  for  such  beneficiary(ies);  provided,  however  that  (i)  such a
     distribution  option  election  shall be effective only if the value of the
     participant's  Plan  Accounts  is  more  than  $50,000  on the  date of the
     participant's  death; and (ii) the final  distribution must be made to such
     beneficiary(ies)  no later  than 15 years  after the  participant's  death.
     After  the end of the  thirtieth  (30th)  calendar  day after the date of a
     participant's  Termination From Employment with Constellation Energy Group,
     a distribution option election for a particular



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     beneficiary is  irrevocable;  provided,  however,  that the participant may
     make a distribution  option election for a new beneficiary who is initially
     designated  after  the  participant's   Termination  From  Employment  with
     Constellation  Energy Group,  and such election is irrevocable with respect
     to the new beneficiary.

     In the event a  participant's  deferred  Incentive Award is credited to the
     Plan after the  participant's  death,  such Incentive Award shall be either
     paid  to  his/her  beneficiary(ies),  or if a  delayed  and/or  installment
     distribution option was elected for such beneficiary(ies),  paid as part of
     the aggregate Plan Accounts in accordance with such election.

     Upon the death of a  participant's  beneficiary  for whom a delayed  and/or
     installment  distribution option was elected,  the entire unpaid balance of
     the  participant's  Plan  Accounts  shall  be paid to the  beneficiary(ies)
     designated by the participant's beneficiary by notification in the form and
     manner  established by the Plan  Administrator  from time to time or, if no
     designation  was  made,  to the  estate of the  participant's  beneficiary.
     Payment  shall be made  within  sixty  (60) days  after  notice of death is
     received by the Plan Administrator.

     Notwithstanding  anything herein  contained to the contrary,  the Committee
     shall have the right in its sole  discretion  to vary the manner and timing
     of  distributions,  and may make such  distributions in a single payment or
     over a shorter or longer period of time than that elected by a participant.

11.  Beneficiaries.   A  participant   shall  have  the  right  to  designate  a
     beneficiary(ies) who is to receive a distribution(s) pursuant to Section 10
     in  the  event  of  the   death  of  the   participant.   A   participant's
     beneficiary(ies) for whom a delayed and/or installment  distribution option
     was elected shall have the right to designate a beneficiary(ies)  who is to
     receive a distribution  pursuant to Section 10 in the event of the death of
     the participant's beneficiary(ies).

     Any designation, change or recision of the designation of beneficiary shall
     be made by  notification  in the form and  manner  established  by the Plan
     Administrator



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     from time to time. The last designation of beneficiary received by the Plan
     Administrator  shall be  controlling  over any  testamentary  or  purported
     disposition  by the  participant  (or,  if  applicable,  the  participant's
     beneficiary(ies)), provided that no designation, recision or change thereof
     shall be effective unless received by the Plan  Administrator  prior to the
     death  of  the   participant   (or,  if   applicable,   the   participant's
     beneficiary(ies)).

     If  the  designated   beneficiary  is  the  estate,   or  the  executor  or
     administrator  of the estate,  of the participant  (or, if applicable,  the
     participant's beneficiary(ies)),  a distribution pursuant to Section 10 may
     be made to the  person(s) or entity  (including a trust)  entitled  thereto
     under the will of the  participant  (or, if applicable,  the  participant's
     beneficiary(ies)), or, in the case of intestacy, under the laws relating to
     intestacy.

     A  participant's  beneficiary(ies)  for whom a delayed  and/or  installment
     distribution  option was elected  shall have the right,  after the death of
     the  participant,  to make  investment  elections or changes in  investment
     elections with respect to a participant's  Plan Accounts to the same extent
     available to the participant  pursuant to Section 9. A beneficiary(ies)  of
     the  participant's  beneficiary(ies)  shall  have  no  right  to  make  any
     investment  election or change in investment election pursuant to Section 9
     with respect to a participant's Plan Accounts.

12.  Valuation of Interest.  The Plan  Administrator  shall cause the value of a
     participant's  Plan Accounts,  at least once per year as of December 31, to
     be determined  separately and be reported to Constellation Energy Group and
     the participant (or, if applicable,  the  participant's  beneficiary(ies)).
     Valuation  of  a  participant's   Plan  Accounts  shall  be  determined  in
     accordance with the procedures contained in the Employee Savings Plan.

13.  Withdrawals.  No  withdrawals  of  Plan  Accounts  may be  made,  except  a
     participant may at any time request a hardship withdrawal from his/her Plan
     Accounts if he/she has incurred an unforeseeable  financial  emergency.  An
     unforeseeable  financial  emergency is



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     defined as severe  financial  hardship to the participant  resulting from a
     sudden and unexpected illness or accident of the participant (or of his/her
     dependents),  loss of the participant's  property due to casualty, or other
     similar  extraordinary and unforeseeable  circumstances arising as a result
     of events beyond the control of the  participant.  The need to send a child
     to  college  or the  desire to  purchase  a home are not  considered  to be
     unforeseeable  emergencies.   The  circumstance  that  will  constitute  an
     unforeseeable emergency will depend upon the facts of each case.

     A hardship  withdrawal will be permitted by the Plan  Administrator only as
     necessary  to satisfy an  immediate  and heavy  financial  need. A hardship
     withdrawal  may be  permitted  only to the extent  reasonably  necessary to
     satisfy the financial need. Payment may not be made to the extent that such
     hardship is or may be relieved (i) through reimbursement or compensation by
     insurance or otherwise, (ii) by liquidation of the participant's assets, to
     the extent the  liquidation  of such assets  would not itself  cause severe
     financial hardship, or (iii) by cessation of deferrals under the Plan.

     The request for hardship  withdrawal  shall be made by  notification in the
     form and manner  established by the Plan  Administrator  from time to time.
     Such hardship  withdrawal  will be permitted only with approval of the Plan
     Administrator.  The  participant  will receive a lump sum payment after the
     Plan Administrator has had reasonable time to consider and then approve the
     request.

14.  Miscellaneous.  A  participant's  Plan  Accounts  shall not 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; and (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.  All amendments to this Plan which would increase or decrease the
     compensation  of  any  senior   management   officer  or  key  employee  of
     Constellation Energy Group, either directly or



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     indirectly,  must  be  approved  by  the  Board  of  Directors.  All  other
     permissible  amendments  may  be  made  at  the  written  direction  of the
     Committee.  No  amendment to or  termination  of this Plan shall impair the
     rights of any participant or beneficiary with respect to amounts in his/her
     Plan Accounts before the date of such amendment or termination.

     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.

     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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