Exhibit 4-11















                    PREFERRED SECURITIES GUARANTEE AGREEMENT

                                     Between

                               PECO Energy Company

                                 (as Guarantor)

                                       and

                  Wachovia Trust Company, National Association

                                  (as Trustee)

                                   dated as of

                              ___________ __, 200_






                                TABLE OF CONTENTS

ARTICLE I  DEFINITIONS........................................................1

         SECTION 1.01.  Definitions...........................................1

ARTICLE II  TRUST INDENTURE ACT...............................................4

         SECTION 2.01.  Trust Indenture Act; Application......................4
         SECTION 2.02.  Lists of Holders of Securities........................4
         SECTION 2.03.  Reports by the Trustee................................4
         SECTION 2.04.  Periodic Reports to Trustee...........................4
         SECTION 2.05.  Evidence of Compliance with Conditions Precedent......4
         SECTION 2.06.  Events of Default; Waiver.............................4
         SECTION 2.07.  Event of Default; Notice..............................5
         SECTION 2.08.  Conflicting Interests.................................5

ARTICLE III  POWERS, DUTIES AND RIGHTS OF TRUSTEE.............................5

         SECTION 3.01.  Powers and Duties of the Trustee......................5
         SECTION 3.02.  Certain Rights of Trustee.............................6
         SECTION 3.03.  Not Responsible for Recitals
                        or Issuance of Preferred Securities ..................8

ARTICLE IV  TRUSTEE...........................................................8

         SECTION 4.01.  Trustee; Eligibility..................................8
         SECTION 4.02.  Appointment, Removal and Resignation of Trustee.......8

ARTICLE V  GUARANTEE..........................................................9

         SECTION 5.01.  Guarantee.............................................9
         SECTION 5.02.  Waiver of Notice and Demand...........................9
         SECTION 5.03.  Obligations Not Affected..............................9
         SECTION 5.04.  Rights of Holders....................................10
         SECTION 5.05.  Guarantee of Payment.................................10
         SECTION 5.06.  Subrogation..........................................11
         SECTION 5.07.  Independent Obligations..............................11

ARTICLE VI  LIMITATION OF TRANSACTIONS; SUBORDINATION........................11

         SECTION 6.01.  Limitation of Transactions...........................11
         SECTION 6.02.  Subordination........................................11

ARTICLE VII  TERMINATION.....................................................11

         SECTION 7.01.  Termination..........................................11

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ARTICLE VIII  INDEMNIFICATION................................................12

         SECTION 8.01.  Exculpation..........................................12
         SECTION 8.02.  Indemnification......................................12
         SECTION 8.03.  Compensation and Fees................................12

ARTICLE IX  MISCELLANEOUS....................................................13

         SECTION 9.01.  Successors and Assigns...............................13
         SECTION 9.02.  Amendments...........................................13
         SECTION 9.03.  Notices..............................................13
         SECTION 9.04.  Benefit..............................................14
         SECTION 9.05.  Interpretation.......................................14
         SECTION 9.06.  Governing Law........................................14
         SECTION 9.07.  Counterparts.........................................15


                                       ii




                    PREFERRED SECURITIES GUARANTEE AGREEMENT

         This PREFERRED SECURITIES GUARANTEE AGREEMENT ("Guarantee  Agreement"),
dated as of  __________  __, 200_ between PECO ENERGY  COMPANY,  a  Pennsylvania
corporation (the "Company"), as guarantor (the "Guarantor"),  and WACHOVIA TRUST
COMPANY, NATIONAL ASSOCIATION,  a Delaware banking corporation,  as trustee (the
"Trustee"), for the benefit of the Holders (as defined herein) from time to time
of the Preferred  Securities  (as defined  herein) of PECO ENERGY  CAPITAL TRUST
[__], a Delaware statutory trust (the "Trust").

         WHEREAS,  pursuant to an Amended and Restated Declaration of Trust (the
"Declaration  of Trust"),  dated as of _______ __, ____,  among  Wachovia  Trust
Company,  National  Association,  as Delaware  and property  trustee,  the other
Trustees named therein,  the Company,  as Sponsor,  and the holders of undivided
beneficial  interests  in the  assets of the  Trust,  the Trust is issuing as of
______________  $____________  aggregate liquidation amount of its ______% Trust
Preferred  Securities  (the  "Preferred   Securities")   representing  preferred
undivided  beneficial  interests in the assets of the Trust and having the terms
set forth in the Declaration of Trust;

         WHEREAS,  the Preferred  Securities will be issued by the Trust and the
proceeds  thereof will be used to purchase the Debentures of the Company,  which
will be held by the Trust as trust assets; and

         WHEREAS,  as  incentive  for the  Holders  to  purchase  the  Preferred
Securities,  the Guarantor desires to irrevocably and unconditionally  agree, to
the extent set forth herein,  to pay to the Holders the  Guarantee  Payments (as
defined  herein) and to make certain other  payments on the terms and conditions
set forth herein.

         NOW,   THEREFORE,   in  consideration  of  the  payment  for  Preferred
Securities  by each  Holder (as  defined  herein)  thereof,  which  payment  the
Guarantor hereby agrees shall benefit the Guarantor,  the Guarantor executes and
delivers  this  Guarantee  Agreement for the benefit of the Holders from time to
time of the Preferred Securities.

                                    Article I
                                   DEFINITIONS

         Section 1.01  Definitions.  As used in this  Guarantee  Agreement,  the
terms set forth below shall,  unless the context  otherwise  requires,  have the
following  meanings.  Capitalized  or  otherwise  defined  terms  used  but  not
otherwise  defined herein shall have the meanings  assigned to such terms in the
Declaration of Trust as in effect on the date hereof.

                  "Affiliate"  of any  specified  Person  means any other Person
directly or indirectly  controlling or controlled by or under direct or indirect
common control with such specified Person.  For the purposes of this definition,
"control"  when used with  respect to any  specified  Person  means the power to
direct the  management  and  policies of such  Person,  directly or  indirectly,
whether  through the ownership of voting  securities,  by contract or otherwise;
and the terms  "controlling" and "controlled"  have meanings  correlative to the
foregoing.

                  "Common  Securities" means the securities  representing common
undivided beneficial interests in the assets of the Trust.

                  "Covered  Person"  means  any  Holder or  beneficial  owner of
Preferred Securities.




                  "Debentures"   means  the   series  of   Deferrable   Interest
Subordinated   Debentures   of  the  Guarantor   designated   the  "___%  Junior
Subordinated  Deferrable  Interest  Debentures  due  _____________"  held by the
Property Trustee (as defined in the Declaration of Trust) of the Trust.

                  "Event of Default" means a failure by the Guarantor to perform
any of its payment or other obligations under this Guarantee Agreement.

                  "Guarantee   Payments"   means  the   following   payments  or
distributions, without duplication, with respect to the Preferred Securities, to
the extent not paid or made by or on behalf of the Trust:  (i) any  accrued  and
unpaid  Distributions (as defined in the Declaration of Trust) that are required
to be paid on such  Preferred  Securities  to the  extent  the  Trust  has funds
legally  available  therefor to make such payment;  (ii) the  redemption  price,
including all accrued and unpaid  Distributions  to the date of redemption  (the
"Redemption  Price"),  with  respect  to the  Preferred  Securities  called  for
redemption by the Trust to the extent that the Trust has funds legally available
therefor  to make  such  payment;  and (iii)  upon a  voluntary  or  involuntary
dissolution,  winding-up or  termination  of the Trust (other than in connection
with the  distribution  of  Debentures  to the  Holders),  the lesser of (a) the
aggregate of the liquidation amount and all accrued and unpaid  distributions on
the  Preferred  Securities  to the date of payment,  to the extent the Trust has
funds  legally  available  therefor,  and (b) the  amount of assets of the Trust
remaining  available for distribution to Holders in liquidation of the Trust (in
either case, the "Liquidation Distribution").

                  "Holder"  means any  holder,  as  registered  on the books and
records of the Trust, of any Preferred  Securities;  provided,  however, that in
determining  whether  the  holders  of the  requisite  percentage  of  Preferred
Securities have given any request, notice, consent or waiver hereunder, "Holder"
shall not include the Guarantor or any Affiliate of the Guarantor.

                  "Indemnified  Person" means the Trustee,  any Affiliate of the
Trustee, or any officers, directors, shareholders, members, partners, employees,
representatives, nominees, custodians or agents of the Trustee.

                  "Indenture"  means the  Indenture,  dated as of May __,  2003,
between  the  Company  and   ___________________,   as  trustee,  as  heretofore
supplemented and as supplemented by the Section 2.01 Certificate.

                  "Majority in liquidation  amount of the Preferred  Securities"
means,  except as provided in the Trust  Indenture  Act, a vote by  Holder(s) of
Preferred  Securities  of more  than  50% of the  aggregate  liquidation  amount
(including  the stated amount that would be paid on  redemption,  liquidation or
otherwise,  plus accumulated and unpaid Distributions to the date upon which the
voting  percentages are determined) of all Preferred  Securities  outstanding at
the time of determination.

                  "Officers'  Certificate"  means a  certificate  signed  by the
Chairman of the Board, the President or a Vice President,  and by the Treasurer,
an  Assistant  Treasurer,  the  Secretary  or an  Assistant  Secretary,  of  the
Guarantor,  and delivered to the Trustee.  Any Officers'  Certificate  delivered
with respect to  compliance  with a condition  or covenant  provided for in this
Guarantee  Agreement  (other  than  pursuant to Section  314(d)(4)  of the Trust
Indenture Act) shall include:

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                  (a) a  statement  that  each  officer  signing  the  Officers'
         Certificate  has read the  covenant or  condition  and the  definitions
         relating thereto;

                  (b)  a  brief  statement  of  the  nature  and  scope  of  the
         examination  or  investigation  undertaken by each officer in rendering
         the Officers' Certificate;

                  (c)  a  statement   that  each  such  officer  has  made  such
         examination  or  investigation  as,  in  such  officer's  opinion,   is
         necessary to enable such  officer to express an informed  opinion as to
         whether or not such covenant or condition has been complied with; and

                  (d) a  statement  as to  whether,  in the opinion of each such
         officer, such condition or covenant has been complied with.

                  "Other  Guarantees"  means  all  guarantees  issued,  or to be
issued,  by the  Guarantor  with respect to the  preferred or common  securities
similar to the Preferred Securities and the Common Securities (as defined in the
Declaration of Trust),  as the case may be, issued by other trusts  established,
or to be  established,  by the  Guarantor,  in each case  similar  to the Trust.
"Other Guarantees" shall include: _________________.

                  "Other   Indebtedness"  means  all  subordinated   Debentures,
debentures or other  indebtedness  issued by the Guarantor from time to time and
sold to trusts established, or to be established, by the Guarantor, in each case
similar to the Trust. "Other Indebtedness" shall include: ___________________.

                  "Person"   means   any   individual,    corporation,   estate,
partnership,  limited  liability  company,  joint venture,  association,  trust,
unincorporated organization or government or any agency or political subdivision
thereof or any other entity of whatever nature.

                  "Responsible  Officer" means, with respect to the Trustee, any
managing  director,  any vice  president,  any  assistant  vice  president,  any
assistant  secretary,  any  assistant  treasurer,  or any other  officer  of the
Corporate Trust and Agency Group of the Trustee customarily performing functions
similar to those  performed  by any of the above  designated  officers  and also
means, with respect to a particular corporate trust matter, any other officer to
whom  such  matter  is  referred  because  of that  officer's  knowledge  of and
familiarity with the particular subject.

                  "Section 2.01 Certificate" means the officers'  certificate of
the Guarantor  issued pursuant to Section 2.01 of the Indenture and establishing
the Debentures.

                  "Successor  Trustee" means a successor Trustee  possessing the
qualifications to act as Trustee under Section 4.01.

                  "Trust  Indenture Act" means the Trust  Indenture Act of 1939,
as amended.

                  "Trustee" means Wachovia Trust Company,  National  Association
until a Successor  Trustee has been appointed and has accepted such  appointment
pursuant to the terms of this Guarantee Agreement and thereafter means each such
Successor Trustee.



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                                   ARTICLE II
                               TRUST INDENTURE ACT

         Section 2.01      Trust Indenture Act; Application.

         (a)   This  Guarantee  Agreement is subject to the provisions of the
Trust Indenture Act that are required to be part of this Guarantee Agreement and
shall, to the extent applicable, be governed by such provisions.

         (b)   If  and to the extent  that any  provision  of this  Guarantee
Agreement limits, qualifies or conflicts with the duties imposed by Sections 310
to 317,  inclusive,  of the Trust  Indenture  Act,  such  imposed  duties  shall
control.

         Section 2.02      Lists of Holders of Securities.

         (a)   The  Guarantor  shall  furnish or cause to be furnished to the
Trustee a list, in such form as the Trustee may reasonably require, of the names
and  addresses of the Holders  ("List of Holders") (i)  semiannually,  not later
than  June 1 and  December  1 in each  year,  as of a date not more than 15 days
prior to the time such list is  furnished,  and (ii) at such other  times as the
Trustee  may  request  in  writing,  within  30 days  after the  receipt  by the
Guarantor of any such  request,  a List of Holders as of a date not more than 15
days prior to the time such list is  furnished;  provided  that,  the  Guarantor
shall not be  obligated  to provide such List of Holders at any time the List of
Holders  does not  differ  from the most  recent  List of  Holders  given to the
Trustee by the Guarantor or at any time the Trustee is the Securities  Registrar
under the  Declaration  of Trust.  The  Trustee  may destroy any List of Holders
previously given to it on receipt of a new List of Holders.

         (b)   The  Trustee shall comply with its obligations  under Sections
311(a), 311(b) and 312(b) of the Trust Indenture Act.

         Section  2.03  Reports by the  Trustee.  Within 60 days after May 15 of
each year commencing May 15, _____,  the Trustee shall provide to the Holders of
the Preferred  Securities  such reports as are required by Section 313(a) of the
Trust  Indenture Act, if any, in the form and in the manner  provided by Section
313 of the Trust  Indenture  Act.  The Trustee  shall also comply with the other
requirements of Section 313 of the Trust Indenture Act.

         Section 2.04 Periodic  Reports to Trustee.  The Guarantor shall provide
to the Trustee such  documents,  reports and  information as required by Section
314 of the Trust  Indenture  Act (if any) in the form,  in the manner and at the
times  required by Section 314 of the Trust  Indenture  Act, and shall  provide,
within  120 days  after  the end of each of its  fiscal  years,  the  compliance
certificate required by Section 314(a)(4) of the Trust Indenture Act in the form
and in the manner required by such Section.

         Section 2.05  Evidence of Compliance  with  Conditions  Precedent.  The
Guarantor  shall  provide to the Trustee such  evidence of  compliance  with the
conditions  precedent,  if any,  provided for in this  Guarantee  Agreement that
relate to any of the matters set forth in Section 314(c) of the Trust  Indenture
Act. Any certificate or opinion  required to be given by an officer  pursuant to
Section 314(c)(1) may be given in the form of an Officers' Certificate.

         Section  2.06 Events of Default;  Waiver.  The Holders of a Majority in
liquidation amount of the Preferred Securities may, by vote, on behalf of all of
the  Holders,  waive any past Event of Default and its  consequences.  Upon such
waiver, any such Event of Default shall cease to exist, and any Event of Default
arising  therefrom shall be deemed to have been cured, for every purpose of this
Guarantee



                                       4


Agreement, but no such waiver shall extend to any subsequent or other default or
Event of Default or impair any right consequent thereon.

         Section 2.07      Event of Default; Notice.

         (a)   The  Trustee shall,  within 90 days after the occurrence of an
Event of Default, transmit by mail, first class postage prepaid, to the Holders,
notices of all Events of Default known to a Responsible  Officer of the Trustee,
unless such defaults have been cured before the giving of such notice,  provided
that the Trustee shall be protected in withholding such notice if and so long as
the  board of  directors,  the  executive  committee,  or a trust  committee  of
directors  and/or  Responsible  Officers of the Trustee in good faith determines
that the withholding of such notice is in the interests of the Holders.

         (b)   The Trustee shall not be deemed to have knowledge of any Event
of Default  unless the Trustee shall have received  written  notice thereof from
the  Guarantor  or  a  Holder,  or  a  Responsible   Officer  charged  with  the
administration of the Declaration of Trust shall have obtained actual knowledge,
of such Event of Default.

         Section 2.08 Conflicting  Interests.  The Declaration of Trust shall be
deemed to be specifically described in this Guarantee Agreement for the purposes
of clause (i) of the first  proviso  contained  in  Section  310(b) of the Trust
Indenture Act.

                                   ARTICLE III
                      POWERS, DUTIES AND RIGHTS OF TRUSTEE

         Section 3.01      Powers and Duties of the Trustee.

         (a)   This  Guarantee Agreement shall be held by the Trustee for the
benefit of the  Holders,  and the  Trustee  shall not  transfer  this  Guarantee
Agreement  to any Person  except the Trustee may assign  rights  hereunder  to a
Holder  exercising  his  or her  rights  pursuant  to  Section  5.04(b)  or to a
Successor  Trustee upon acceptance by such Successor  Trustee of its appointment
to act as Successor Trustee.  The right, title and interest of the Trustee shall
automatically vest in any Successor  Trustee,  and such vesting and cessation of
title  shall be  effective  whether  or not  conveyancing  documents  have  been
executed and delivered pursuant to the appointment of such Successor Trustee.

         (b)   If an Event of Default actually known to a Responsible Officer
of the Trustee has occurred and is  continuing,  the Trustee  shall enforce this
Guarantee Agreement for the benefit of the Holders.

         (c)   The Trustee, before the occurrence of any Event of Default and
after the curing or waiving  of all  Events of Default  that may have  occurred,
shall  undertake  to perform only such duties as are  specifically  set forth in
this  Guarantee  Agreement,  and no  implied  covenants  shall be read into this
Guarantee  Agreement  against  the  Trustee.  In case an  Event of  Default  has
occurred  (that has not been  cured or waived  pursuant  to Section  2.06),  the
Trustee  shall  exercise  such of the  rights  and  powers  vested in it by this
Guarantee  Agreement,  and use the same degree of care and skill in its exercise
thereof,  as a prudent person would exercise or use under the  circumstances  in
the conduct of his or her own affairs.

         (d)   No provision of this Guarantee Agreement shall be construed to
relieve  the  Trustee  from  liability  for its own  negligent  action,  its own
negligent failure to act, or its own willful misconduct, except that:


                                       5



                  (i) prior to the  occurrence of any Event of Default and after
         the  curing or  waiving  of all such  Events of  Default  that may have
         occurred:

                           (A) the duties and  obligations  of the Trustee shall
                  be  determined  solely  by  the  express  provisions  of  this
                  Guarantee  Agreement,  and the  Trustee  shall  not be  liable
                  except for the  performance of such duties and  obligations as
                  are specifically set forth in this Guarantee Agreement, and no
                  implied  covenants  or  obligations  shall be read  into  this
                  Guarantee Agreement against the Trustee; and

                           (B) in the  absence  of bad  faith on the part of the
                  Trustee, the Trustee may conclusively rely, as to the truth of
                  the statements and the  correctness of the opinions  expressed
                  therein,  upon any  certificates or opinions  furnished to the
                  Trustee and conforming to the  requirements  of this Guarantee
                  Agreement;  but  in  the  case  of any  such  certificates  or
                  opinions  that  by  any  provision   hereof  are  specifically
                  required to be furnished to the Trustee,  the Trustee shall be
                  under a duty to examine the same to  determine  whether or not
                  they conform to the requirements of this Guarantee Agreement;

                  (ii) the Trustee shall not be liable for any error of judgment
         made in good faith by a Responsible  Officer of the Trustee,  unless it
         shall be proved that the  Trustee was  negligent  in  ascertaining  the
         pertinent facts upon which such judgment was made;

                  (iii) the  Trustee  shall not be liable  with  respect  to any
         action  taken or omitted to be taken by it in good faith in  accordance
         with the  direction  of the  Holders  of not less  than a  Majority  in
         liquidation  amount of the Preferred  Securities  relating to the time,
         method and place of conducting any proceeding for any remedy  available
         to the Trustee,  or exercising  any trust or power  conferred  upon the
         Trustee under this Guarantee Agreement; and

                  (iv) no provision of this  Guarantee  Agreement  shall require
         the Trustee to expend or risk its own funds or otherwise incur personal
         financial  liability in the  performance of any of its duties or in the
         exercise  of any of its rights or  powers,  if the  Trustee  shall have
         reasonable  grounds for  believing  that the repayment of such funds or
         liability  is not  reasonably  assured  to it under  the  terms of this
         Guarantee   Agreement  or  adequate  indemnity  against  such  risk  or
         liability is not reasonably assured to it.

         Section 3.02      Certain Rights of Trustee.

         (a)   Subject to the provisions of Section 3.01:

                  (i) the  Trustee  may  conclusively  rely  and  shall be fully
         protected  in acting or  refraining  from acting  upon any  resolution,
         certificate,  statement,  instrument, opinion, report, notice, request,
         direction,  consent,  order, bond,  debenture,  note, other evidence of
         indebtedness  or other paper or  document  believed by it to be genuine
         and to have been  signed,  sent or  presented  by the  proper  party or
         parties;

                  (ii) any  direction or act of the  Guarantor  contemplated  by
         this  Guarantee  Agreement  shall  be  sufficiently   evidenced  by  an
         Officers' Certificate;

                  (iii)  whenever,  in  the  administration  of  this  Guarantee
         Agreement,  the Trustee shall deem it desirable that a matter be proved
         or  established  before  taking,   suffering  or  omitting  any  action
         hereunder,  the Trustee  (unless other evidence is herein  specifically
         prescribed)  may, in the


                                       6



         absence of bad faith on its part,  request  and rely upon an  Officers'
         Certificate  which,  upon  receipt of such  request,  shall be promptly
         delivered by the Guarantor;

                  (iv) the Trustee  shall have no duty to see to any  recording,
         filing or registration of any instrument (or any rerecording,  refiling
         or registration thereof);

                  (v) the Trustee may consult  with  counsel of its choice,  and
         the advice or opinion of such  counsel  with  respect to legal  matters
         shall be full and complete  authorization  and protection in respect of
         any action taken, suffered or omitted by it hereunder in good faith and
         in accordance with such advice or opinion;  such counsel may be counsel
         to the  Guarantor or any of its  Affiliates  and may include any of its
         employees;  the  Trustee  shall  have  the  right  at any  time to seek
         instructions  concerning the administration of this Guarantee Agreement
         from any court of competent jurisdiction;

                  (vi) the Trustee  shall be under no obligation to exercise any
         of the rights or powers vested in it by this Guarantee Agreement at the
         request or  direction  of any Holder,  unless  such  Holder  shall have
         provided to the Trustee reasonable security and indemnity  satisfactory
         to the Trustee against the costs,  expenses (including  attorneys' fees
         and expenses) and liabilities that might be incurred by it in complying
         with such request or direction,  including such reasonable  advances as
         may be  requested by the Trustee;  provided  that nothing  contained in
         this Section  3.02(a)(vi)  shall be taken to relieve the Trustee,  upon
         the  occurrence of an Event of Default,  of its  obligation to exercise
         the rights and powers vested in it by this Guarantee Agreement;

                  (vii) the Trustee shall not be bound to make any investigation
         into the  facts  or  matters  stated  in any  resolution,  certificate,
         statement,  instrument,  opinion,  report, notice, request,  direction,
         consent,  order, bond, debenture,  note, other evidence of indebtedness
         or other paper or document,  but the Trustee,  in its  discretion,  may
         make such further inquiry or  investigation  into such facts or matters
         as it may see fit;

                  (viii) the  Trustee  may  execute  any of the trusts or powers
         hereunder  or perform  any duties  hereunder  either  directly or by or
         through  agents or attorneys,  and the Trustee shall not be responsible
         for any  misconduct  or negligence on the part of any agent or attorney
         appointed with due care by it hereunder;

                  (ix) any action  taken by the Trustee or its agents  hereunder
         shall bind the Holders,  and the signature of the Trustee or its agents
         alone shall be sufficient and effective to perform any such action;  no
         third party shall be  required  to inquire as to the  authority  of the
         Trustee  to so act or as to its  compliance  with any of the  terms and
         provisions  of  this  Guarantee  Agreement,  both  of  which  shall  be
         conclusively  evidenced  by the  Trustee's  or its agent's  taking such
         action;

                  (x) whenever in the administration of this Guarantee Agreement
         the  Trustee  shall  deem it  desirable  to receive  instructions  with
         respect to  enforcing  any  remedy or right or taking any other  action
         hereunder, the Trustee (A) may request instructions from the Holders of
         a Majority in liquidation amount of the Preferred  Securities,  (B) may
         refrain from enforcing such remedy or right or taking such other action
         until such  instructions  are  received,  and (C) shall be protected in
         acting in accordance with such instructions; and

                  (xi) the  Trustee  shall not be liable for any  action  taken,
         suffered,  or  omitted  to  be  taken  by  it in  good  faith,  without
         negligence,  and  reasonably  believed by it to be authorized or within
         the discretion or rights or powers  conferred upon it by this Guarantee
         Agreement.


                                       7



         (b)   No  provision of this Guarantee  Agreement  shall be deemed to
impose any duty or  obligation  on the  Trustee  to  perform  any act or acts or
exercise any right, power, duty or obligation  conferred or imposed on it in any
jurisdiction  in which it shall be  illegal,  or in which the  Trustee  shall be
unqualified  or incompetent in accordance  with  applicable  law, to perform any
such act or acts or to exercise any such right,  power,  duty or obligation.  No
permissive power or authority  available to the Trustee shall be construed to be
a duty.

         Section  3.03 Not  Responsible  for  Recitals or Issuance of  Preferred
Securities. The recitals contained in this Guarantee Agreement shall be taken as
the  statements  of  the  Guarantor,   and  the  Trustee  does  not  assume  any
responsibility for their correctness.  The Trustee makes no representation as to
the validity or sufficiency of this Guarantee Agreement.

                                   ARTICLE IV
                                     TRUSTEE

         Section 4.01      Trustee; Eligibility.

         (a)   There shall at all times be a Trustee which shall:

                  (i) not be an Affiliate of the Guarantor; and

                  (ii) be a corporation  organized and doing  business under the
         laws of the United States of America or any State or Territory  thereof
         or of the District of Columbia, or a corporation or Person permitted by
         the  Securities  and  Exchange  Commission  to act as an  institutional
         trustee under the Trust  Indenture Act,  authorized  under such laws to
         exercise corporate trust powers,  having a combined capital and surplus
         of at least 50  million  U.S.  dollars  ($50,000,000),  and  subject to
         supervision or examination by Federal,  State,  Territorial or District
         of  Columbia  authority.  If  such  corporation  publishes  reports  of
         condition at least annually,  pursuant to law or to the requirements of
         the supervising or examining authority referred to above, then, for the
         purposes of this Section 4.01(a)(ii),  the combined capital and surplus
         of such  corporation  shall be deemed to be its  combined  capital  and
         surplus  as set  forth  in its  most  recent  report  of  condition  so
         published.

         (b)   If  at any time the  Trustee  shall cease to be eligible to so
act under Section 4.01(a),  the Trustee shall  immediately  resign in the manner
and with the effect set out in Section 4.02(c).

         (c)   If the Trustee has or shall acquire any "conflicting interest"
within the meaning of Section 310(b) of the Trust Indenture Act, the Trustee and
Guarantor  shall in all respects comply with the provisions of Section 310(b) of
the  Trust  Indenture  Act,  subject  to the  rights  of the  Trustee  under the
penultimate paragraph thereof.

         Section 4.02      Appointment, Removal and Resignation of Trustee.

         (a)   Subject  to Section  4.02(b),  the Trustee may be appointed or
removed  without  cause at any time by the  Guarantor  except during an Event of
Default.

         (b)   The  Trustee shall not be removed in  accordance  with Section
4.02(a)  until a Successor  Trustee has been  appointed  and has  accepted  such
appointment  by  written  instrument  executed  by such  Successor  Trustee  and
delivered to the Guarantor.


                                       8



         (c)   The  Trustee  appointed  to office  shall hold office  until a
Successor Trustee shall have been appointed or until its removal or resignation.
The  Trustee  may  resign  from  office  (without  need for prior or  subsequent
accounting) by an instrument in writing executed by the Trustee and delivered to
the Guarantor, which resignation shall not take effect until a Successor Trustee
has been  appointed and has accepted such  appointment  by instrument in writing
executed  by such  Successor  Trustee and  delivered  to the  Guarantor  and the
resigning Trustee.

         (d)   If no Successor Trustee shall have been appointed and accepted
appointment  as provided in this Section  4.02 within 60 days after  delivery to
the  Guarantor  of an  instrument  of  resignation,  the  resigning  Trustee may
petition  any court of competent  jurisdiction  for  appointment  of a Successor
Trustee. Such court may thereupon,  after prescribing such notice, if any, as it
may deem proper, appoint a Successor Trustee.

         (e)   No Trustee shall be liable for the acts or omissions to act of
any Successor Trustee.

         (f)   Upon  termination  of this  Guarantee  Agreement or removal or
resignation of the Trustee  pursuant to this Section 4.02,  the Guarantor  shall
pay to the Trustee  all  amounts due to the Trustee  accrued to the date of such
termination, removal or resignation.

                                    ARTICLE V
                                    GUARANTEE

         Section 5.01 Guarantee.  The Guarantor  irrevocably and unconditionally
agrees to pay in full to the Holders the Guarantee Payments (without duplication
of  amounts  theretofore  paid by or on behalf of the  Trust),  as and when due,
regardless of any defense,  right of set-off or counterclaim which the Trust may
have  or  assert  against  any  Person.  The  Guarantor's  obligation  to make a
Guarantee  Payment may be satisfied by direct payment of the required amounts by
the  Guarantor to the Holders or by causing the Trust to pay such amounts to the
Holders.

         Section 5.02 Waiver of Notice and Demand.  The Guarantor  hereby waives
notice of acceptance of this  Guarantee  Agreement and of any liability to which
it applies or may apply, presentment, demand for payment, any right to require a
proceeding first against the Trust or any other Person before proceeding against
the  Guarantor,  protest,  notice of nonpayment,  notice of dishonor,  notice of
redemption and all other notices and demands.

         Section 5.03  Obligations  Not Affected.  The  obligations,  covenants,
agreements and duties of the Guarantor  under this Guarantee  Agreement shall in
no way be affected or impaired by reason of the  happening  from time to time of
any of the following:

         (a)   the  release or waiver,  by operation of law or otherwise,  of
the performance or observance by the Trust of any express or implied  agreement,
covenant, term or condition relating to the Preferred Securities to be performed
or observed by the Trust;

         (b)   the  extension  of time for the payment by the Trust of all or
any portion of the Distributions,  Redemption Price, Liquidation Distribution or
any  other  sums  payable  under the terms of the  Preferred  Securities  or the
extension of time for the performance of any other obligation under, arising out
of, or in connection with, the Preferred  Securities (other than an extension of
time for payment of Distributions, Redemption Price, Liquidation Distribution or
other sum payable that results from the extension of any interest payment period
on the Debentures permitted by the Indenture);


                                       9



         (c)   any failure,  omission, delay or lack of diligence on the part
of the Holders to enforce,  assert or exercise  any right,  privilege,  power or
remedy  conferred  on the  Holders  pursuant  to  the  terms  of  the  Preferred
Securities,  or any  action  on the part of the  Trust  granting  indulgence  or
extension of any kind;

         (d)   the voluntary or involuntary liquidation, dissolution, sale of
any collateral, receivership, insolvency, bankruptcy, assignment for the benefit
of creditors,  reorganization,  arrangement, composition or readjustment of debt
of, or other similar  proceedings  affecting,  the Trust or any of the assets of
the Trust;

         (e)   any invalidity of, or defect or deficiency in, the Preferred
Securities;

         (f)   the settlement or compromise of any obligation guaranteed hereby
 or hereby incurred; or

         (g)   any  other   circumstance   whatsoever  that  might  otherwise
constitute  a legal or equitable  discharge or defense of a guarantor,  it being
the intent of this Section 5.03 that the obligations of the Guarantor  hereunder
shall be absolute and unconditional under any and all circumstances.

                  There shall be no obligation of the Holders to give notice to,
or obtain  consent of, the Guarantor with respect to the happening of any of the
foregoing.

         Section 5.04  Rights of Holders.  The Guarantor expressly acknowledges:

         (a)   The  Guarantee Agreement will be deposited with the Trustee to
be held for the  benefit of the  Holders.  The  Trustee has the right to enforce
this Guarantee Agreement on behalf of the Holders.  The Holders of a Majority in
liquidation  amount of the  Preferred  Securities  have the right to direct  the
time,  method and place of conducting any proceeding for any remedy available to
the Trustee in respect of this  Guarantee  Agreement or exercising  any trust or
power  conferred  upon the Trustee  under this  Guarantee  Agreement;  provided,
however,  that,  subject  to the duties and  responsibilities  of the  Indenture
Trustee  pursuant to the Indenture,  the Trustee shall have the right to decline
to follow any such  direction if the Trustee shall  determine that the action so
directed  would be unjustly  prejudicial  to the Holders not taking part in such
direction or if the Trustee being advised by counsel  determines that the action
or  proceeding  so directed  may not lawfully be taken or if the Trustee in good
faith by its board of  directors or trustees,  executive  committee,  or a trust
committee of directors or trustees and/or  Responsible  Officers shall determine
that the action or proceedings so directed would involve the Trustee in personal
liability.

         (b)   If the Trustee fails to enforce this Guarantee Agreement,  any
Holder may  institute  a legal  proceeding  directly  against the  Guarantor  to
enforce the  Trustee's  rights under this  Guarantee  Agreement,  without  first
instituting  a legal  proceeding  against  the Trust,  the  Trustee or any other
person or entity.  The Guarantor  waives any right or remedy to require that any
action be brought  first  against the Trust or any other person or entity before
proceeding directly against the Guarantor; it being understood and intended that
no one or more of such Holders shall have any right in any manner  whatsoever by
virtue of, or by availing  of, any  provision  of this  Guarantee  Agreement  to
affect,  disturb  or  prejudice  the  rights of any other of such  Holders or to
obtain  or to seek to  obtain  priority  or  preference  over any  other of such
Holders or to enforce any right under this  Guarantee  Agreement,  except in the
manner  herein  provided  and for the  equal  and  ratable  benefit  of all such
Holders.

         Section 5.05      Guarantee of Payment.  This Guarantee Agreement
creates a guarantee of payment and not of collection.


                                       10



         Section 5.06 Subrogation.  The Guarantor shall be subrogated to all (if
any) rights of the Holders  against the Trust in respect of any amounts  paid to
the Holders by the Guarantor under this Guarantee Agreement;  provided, however,
that the  Guarantor  shall not  (except  to the  extent  required  by  mandatory
provisions  of law) be entitled to enforce or exercise  any rights  which it may
acquire  by  way  of  subrogation  or  any  indemnity,  reimbursement  or  other
agreement,  in all cases as a result of payment under this Guarantee  Agreement,
if, at the time of any such payment,  any amounts of Guarantee  Payments are due
and unpaid under this  Guarantee  Agreement.  If any amount shall be paid to the
Guarantor in violation of the preceding  sentence,  the Guarantor agrees to hold
such amount in trust for the Holders and to pay over such amount to the Holders.

         Section 5.07 Independent  Obligations.  The Guarantor acknowledges that
its  obligations  hereunder are independent of the obligations of the Trust with
respect to the Preferred  Securities  and that the Guarantor  shall be liable as
principal and as debtor  hereunder to make  Guarantee  Payments  pursuant to the
terms of this Guarantee  Agreement  notwithstanding  the occurrence of any event
referred to in subsections (a) through (g), inclusive, of Section 5.03 hereof.

                                   ARTICLE VI
                    LIMITATION OF TRANSACTIONS; SUBORDINATION

         Section  6.01  Limitation  of  Transactions.  So long as any  Preferred
Securities remain outstanding, if the Guarantor shall be in default with respect
to its  payment of any  obligations  under this  Guarantee  Agreement,  then the
Guarantor  shall not (i) declare or pay any dividend on, make any  distributions
with respect to, or redeem,  purchase or make a liquidation payment with respect
to, any of the  Guarantor's  capital stock,  (ii) make any payment of principal,
interest  or  premium,  if any,  on or repay or  repurchase  or redeem  any debt
securities (including  guarantees) of the Guarantor that rank pari passu with or
junior  in right of  payment  to the  Debentures  or  (iii)  make any  guarantee
payments  with respect to the foregoing  (except with respect to this  Guarantee
Agreement).

         Section 6.02 Subordination. The obligations of the Guarantor under this
Guarantee Agreement will constitute  unsecured  obligations of the Guarantor and
will  rank  (i)  subordinate  and  junior  in  right of  payment  to the  Senior
Indebtedness  (as defined in the  Indenture)  to the same extent and in the same
manner as the Debentures are subordinated to Senior Indebtedness pursuant to the
Section 2.01  Certificate,  it being  understood  that the terms of Sections (o)
through (v) of the Section 2.01  Certificate  shall apply to the  obligations of
the Guarantor under this Guarantee Agreement as if such Sections (o) through (v)
of the  Section  2.01  Certificate  were  set  forth  herein  in full  and  such
obligations were substituted for the term "Debentures" appearing in such Article
VI, (ii)  subordinate  and junior in right of payment to the  Debentures and any
Other  Indebtedness,  (iii)  pari  passu  with any  guarantee  in respect of any
preferred  stock  of any  affiliate  of the  Guarantor  and (iv)  senior  to all
preferred and common stock of the Guarantor.

                                   ARTICLE VII
                                   TERMINATION

         Section 7.01 Termination.  This Guarantee Agreement shall terminate and
be of no further force and effect upon: (i) full payment of the Redemption Price
of all Preferred Securities,  (ii) the distribution of Debentures to the Holders
in exchange for all of the  Preferred  Securities,  or (iii) full payment of the
amounts payable in accordance with the Declaration of Trust upon  liquidation of
the Trust. Notwithstanding the foregoing, this Guarantee Agreement will continue
to be  effective or will be  reinstated,  as the case may be, if at any time any
Holder  must  restore  payment  of any  sums  paid  with  respect  to  Preferred
Securities or under this Guarantee Agreement.


                                       11



                                  ARTICLE VIII
                                 INDEMNIFICATION

         Section 8.01      Exculpation.

         (a)   No   Indemnified  Person  shall  be  liable,   responsible  or
accountable  in damages or otherwise to the Guarantor or any Covered  Person for
any loss, damage or claim incurred by reason of any act or omission performed or
omitted  by such  Indemnified  Person  in good  faith in  accordance  with  this
Guarantee  Agreement  and in a manner that such  Indemnified  Person  reasonably
believed to be within the scope of the authority  conferred on such  Indemnified
Person by this Guarantee  Agreement or by law, except that an Indemnified Person
shall be liable for any such loss,  damage or claim  incurred  by reason of such
Indemnified  Person's negligence or willful misconduct with respect to such acts
or omissions.

         (b)   An  Indemnified  Person shall be fully protected in relying in
good  faith  upon  the  records  of the  Guarantor  and upon  such  information,
opinions,  reports or statements  presented to the Guarantor by any Person as to
matters  the  Indemnified  Person  reasonably  believes  are  within  such other
Person's  professional  or  expert  competence  and who has been  selected  with
reasonable  care  by or on  behalf  of  the  Guarantor,  including  information,
opinions,  reports  or  statements  as to the  value and  amount of the  assets,
liabilities,  profits, losses, or any other facts pertinent to the existence and
amount of assets from which Distributions to Holders might properly be paid.

         Section 8.02  Indemnification.  The Guarantor  agrees to indemnify each
Indemnified  Person for, and to hold each Indemnified  Person harmless  against,
any  and  all  loss,  liability,  damage,  claim  or  expense  incurred  without
negligence or bad faith on its part,  arising out of or in  connection  with the
acceptance or  administration  of the trust or trusts  hereunder,  including the
costs and expenses  (including  reasonable legal fees and expenses) of defending
itself against, or investigating,  any claim or liability in connection with the
exercise or performance of any of its powers or duties hereunder. The obligation
to indemnify as set forth in this Section 8.02 shall survive the  termination of
this Guarantee Agreement.

         Section 8.03      Compensation and Fees.

         The Guarantor agrees:

         (a)   to   pay  to  the  Trustee   from  time  to  time   reasonable
compensation for all services  rendered by the Trustee hereunder in such amounts
as the  Guarantor  and  the  Trustee  shall  agree  from  time  to  time  (which
compensation  shall  not be  limited  by any  provision  of law in regard to the
compensation of a trustee of an express trust); and

         (b)   except  as otherwise  expressly  provided herein, to reimburse
the Trustee upon request for all reasonable expenses, disbursements and advances
incurred  or made by the  Trustee  in  accordance  with  any  provision  of this
Guarantee Agreement (including the reasonable  compensation and the expenses and
disbursements of its agents and counsel), except any such expense,  disbursement
or advance as may be attributable to its negligence or bad faith.

                  The   provisions  of  this  Section  8.03  shall  survive  the
resignation  or removal  of the  Trustee or the  termination  of this  Guarantee
Agreement.

                  To secure the Guarantor's  payment obligations in this Section
8.03 and in Section  8.02,  the Guarantor and the Holders agree that the Trustee
shall have a lien prior to the  Preferred  Securities  on all money or  property
held or collected by the Trustee.  Such lien shall  survive the  termination  of
this Guarantee Agreement.


                                       12



                                   ARTICLE IX
                                  MISCELLANEOUS

         Section 9.01  Successors  and Assigns.  All  guarantees  and agreements
contained  in this  Guarantee  Agreement  shall  bind the  successors,  assigns,
receivers,  trustees and representatives of the Guarantor and shall inure to the
benefit of the Holders of the Preferred Securities then outstanding.

         Section 9.02  Amendments.  Except with respect to any changes  which do
not  materially  and  adversely  affect the rights of Holders  (in which case no
consent of Holders  will be  required),  this  Guarantee  Agreement  may only be
amended  with the prior  approval of the  Holders of a Majority  in  liquidation
amount  of  the  Preferred  Securities.  The  provisions  of  Article  6 of  the
Declaration of Trust concerning meetings of and voting by Holders shall apply to
the giving of such approval.

         Section  9.03  Notices.  Any  notice,  request  or other  communication
required or permitted to be given hereunder shall be in writing,  duly signed by
the party giving such notice, and delivered, telecopied or mailed by first class
mail as follows:

         (a)   if  given to the  Trustee,  to the  address set forth below or
such other  address as the Trustee may give notice of to the  Guarantor  and the
Holders:

                             Wachovia Trust Company, National Association
                             One Rodney Square
                             920 King Street, Suite 102
                             Wilmington, Delaware  19801
                             Attention:  Rita Marie Ritrovato, Trust Officer
                             Telecopy: (302) 888-7544

         (b)   if  given to the Guarantor,  to the address set forth below or
such other  address as the  Guarantor  may give notice of to the Trustee and the
Holders:

                             PECO Energy Company
                             2301 Market Street
                             Philadelphia, Pennsylvania 19101
                             Attention:  Treasurer
                             Telecopy:  (___) ___-____

         (c)   if  given  to the  Trust,  in care of the  Trustee,  or to the
Trustee at the Trust's (and the Trustee's) address set forth below or such other
address as the Trustee on behalf of the Trust may give notice to the Holders:

                             PECO Energy Capital Trust [__]
                             c/o PECO Energy Company
                             2301 Market Street
                             Philadelphia, Pennsylvania 19101
                             Attention:  Treasurer
                             Telecopy:  (___) ___-____

         with a copy,  in the case of a notice to the Trust (other than a notice
         from the Guarantor), to the Guarantor; and


                                       13



         (d)   if given to any Holder, at the address set forth on the books and
records of the Trust.

                  All notices  hereunder shall be deemed to have been given when
received in person,  telecopied with receipt confirmed, or mailed by first class
mail,  postage  prepaid  except  that if a notice or other  document  is refused
delivery or cannot be delivered  because of a changed address of which no notice
was given,  such notice or other document shall be deemed to have been delivered
on the date of such refusal or inability to deliver.

         Section  9.04  Benefit.  This  Guarantee  Agreement  is solely  for the
benefit  of the  Holders  and,  subject to Section  3.01(a),  is not  separately
transferable from the Preferred Securities.

         Section 9.05      Interpretation.  In this Guarantee Agreement, unless
the context otherwise requires:

         (a)   capitalized  terms used in this  Guarantee  Agreement  but not
defined in the preamble hereto have the respective  meanings assigned to them in
Section 1.01;

         (b)   a  term defined  anywhere in this Guarantee  Agreement has the
same meaning  throughout;  all references to "the Guarantee  Agreement" or "this
Guarantee  Agreement" are to this Guarantee Agreement as modified,  supplemented
or amended from time to time;

         (c)   all  references  in this  Guarantee  Agreement to Articles and
Sections  are to  Articles  and  Sections  of this  Guarantee  Agreement  unless
otherwise specified;

         (d)   a term defined in the Trust Indenture Act has the same meaning
when used in this Guarantee Agreement unless otherwise defined in this Guarantee
Agreement or unless the context otherwise requires;

         (e)   a reference to the singular includes the plural and vice versa;
and

         (f)   the  masculine,  feminine or neuter  genders used herein shall
include the masculine, feminine and neuter genders.

         Section 9.06 Governing Law. THIS GUARANTEE  AGREEMENT SHALL BE GOVERNED
BY AND CONSTRUED  AND  INTERPRETED  IN ACCORDANCE  WITH THE INTERNAL LAWS OF THE
COMMONWEALTH OF PENNSYLVANIA.  THE GUARANTOR HEREBY  IRREVOCABLY  SUBMITS TO THE
JURISDICTION  OF THE UNITED STATES  DISTRICT  COURT FOR THE EASTERN  DISTRICT OF
PENNSYLVANIA  AND ANY COURT IN THE  COMMONWEALTH OF PENNSYLVANIA  LOCATED IN THE
CITY AND  COUNTY OF  PHILADELPHIA  IN ANY  ACTION,  SUIT OR  PROCEEDING  BROUGHT
AGAINST IT AND RELATED TO OR IN CONNECTION WITH THIS GUARANTEE  AGREEMENT OR THE
TRANSACTIONS  CONTEMPLATED  THEREBY,  AND TO THE EXTENT  PERMITTED BY APPLICABLE
LAW, THE GUARANTOR HEREBY WAIVES AND AGREES NOT TO ASSERT BY WAY OF MOTION, AS A
DEFENSE OR OTHERWISE IN ANY SUCH SUIT,  ACTION OR PROCEEDING,  ANY CLAIM THAT IT
IS NOT PERSONALLY  SUBJECT TO THE  JURISDICTION  OF SUCH COURTS,  THAT THE SUIT,
ACTION OR PROCEEDING IS BROUGHT IN AN INCONVENIENT  FORUM, THAT THE VENUE OF THE
SUIT, ACTION OR PROCEEDING IS IMPROPER,  OR THAT THIS GUARANTEE AGREEMENT OR ANY
DOCUMENT OR ANY  INSTRUMENT  REFERRED TO HEREIN OR THE SUBJECT MATTER HEREOF MAY
NOT BE  LITIGATED  IN OR BY SUCH COURTS.  THE  GUARANTOR  AGREES THAT SERVICE OF


                                       14



PROCESS MAY BE MADE UPON IT BY CERTIFIED OR  REGISTERED  MAIL TO THE ADDRESS FOR
NOTICES SET FORTH IN THIS  GUARANTEE  AGREEMENT OR ANY METHOD  AUTHORIZED BY THE
LAWS OF PENNSYLVANIA.

         Section  9.07  Counterparts.  This  instrument  may be  executed in any
number  of  counterparts,  each of which so  executed  shall be  deemed to be an
original,  but all such counterparts  shall together  constitute but one and the
same instrument.





                                       15



         THIS PREFERRED SECURITIES GUARANTEE AGREEMENT is executed as of the day
and year first above written.



                                 PECO ENERGY COMPANY


                             By:      ________________________________
                                Name:
                                Title:


                                   WACHOVIA TRUST COMPANY, NATIONAL
                                        ASSOCIATION


                             By:         ________________________________
                                Name:
                                Title:





                                       16