UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549
                                    FORM 8-K



                                 CURRENT REPORT


                Pursuant to Section 13 or 15(d) of the Securities
                              Exchange Act of 1934


                                  June 2, 2003
                                (Date of earliest
                                 event reported)





Commission File            Name of Registrant; State of Incorporation; Address of       IRS Employer
Number                     Principal Executive Offices; and Telephone Number            Identification Number
- ---------------------      ---------------------------------------------------------    -------------------------
                                                                                     
1-16169                    EXELON CORPORATION                                           23-2990190
                           (a Pennsylvania corporation)
                           10 South Dearborn Street - 37th Floor
                           P.O. Box 805379
                           Chicago, Illinois 60680-5379
                           (312) 394-7398
333-85496                  EXELON GENERATION COMPANY, LLC                               23-3064219
                           (a Pennsylvania limited liability company)
                           300 Exelon Way
                           Kennett Square, Pennsylvania 19348
                           (610) 765-6900








Item 5. Other Events

As  previously  disclosed,  Exelon  Boston  Generating,  LLC (EBG),  an indirect
subsidiary of Exelon  Corporation  (Exelon) and Exelon Generation  Company,  LLC
(Generation),  has $1.1 billion of debt outstanding under a $1.25 billion credit
facility (EBG Facility). That facility was entered into primarily to finance the
construction  of the Mystic 8 and 9 and Fore  River  generating  units.  The EBG
Facility  requires that all of the projects  achieve  "Project  Completion,"  as
defined in the EBG Facility,  by June 12, 2003,  which date will not be met. The
Mystic 8 unit is in  commercial  operation  and the Mystic 9 unit is on-line and
ready for  commercial  operation.  Construction  of Fore River is  substantially
complete, and the unit is currently undergoing testing.

The EBG Facility  provides  that if the June 12, 2003 date is not met,  then the
EBG  Facility  lenders  may,  among  other  things,  declare  all  amounts  then
outstanding  under the EBG Facility to be due,  terminate  the related  interest
rate swap  agreements,  foreclose on all the pledged  assets or ownership of the
project  subsidiaries,  and/or  require  that all cash  held by the EBG  project
subsidiaries  be used to reduce the debt.  The EBG Facility is  non-recourse  to
Exelon and  Generation  and an event of default  under the EBG Facility does not
constitute an event of default under any other debt instruments of Exelon or its
subsidiaries.  We are  evaluating all of our options  regarding the  anticipated
failure to achieve "Project Completion" by June 12, 2003.

On June 2, 2003, EBG and the administrative agent for the EBG Facility submitted
to the lenders under the EBG Facility for their approval an amendment to the EBG
Facility,  extending the date for "Project  Completion"  to July 11, 2003.  EBG,
however,  does  not  expect  that  all of the  projects  will  achieve  "Project
Completion,"  as  defined  in the EBG  Facility,  by  that  date.  The  proposed
amendment  requires  approval  from 100% of the nineteen  lenders in order to be
effective.  EBG cannot  predict  whether  all of the  lenders  will  approve the
amendment  and, if  approved,  whether  EBG will be able to  negotiate a further
amendment  or a waiver of the EBG  Facility  with the lenders or what action the
lenders may take as a result of the failure to achieve  "Project  Completion" by
the required date.


This  combined  Form 8-K is being filed  separately  by Exelon  Corporation  and
Exelon  Generation  Company,  LLC  (Registrants).  Information  contained herein
relating to any individual  registrant has been filed by such  registrant on its
own behalf. No registrant makes any representation as to information relating to
any other registrant.

Except for the historical  information contained herein,  certain of the matters
discussed in this Report are forward-looking  statements,  within the meaning of
the Private Securities  Litigation Reform Act of 1995, that are subject to risks
and  uncertainties.  The  factors  that  could  cause  actual  results to differ
materially  from the  forward-looking  statements  made by a registrant  include
those discussed  herein, as well as those discussed in (a) the Registrants' 2002
Annual  Report on Form 10-K - ITEM 7.  Management's  Discussion  and Analysis of
Financial  Condition  and  Results  of  Operations--Business   Outlook  and  the
Challenges in Managing Our Business for Exelon, ComEd, PECO and Generation,






(b)  the  Registrants'  2002  Annual  Report  on Form  10-K - ITEM 8.  Financial
Statements  and  Supplementary  Data:  Exelon - Note 19, ComEd - Note 16, PECO -
Note 18 and Generation - Note 13 and (c) other factors discussed in filings with
the United States  Securities and Exchange  Commission (SEC) by the Registrants.
Readers  are  cautioned  not to place undue  reliance  on these  forward-looking
statements,  which  apply  only  as of the  date  of  this  Report.  None of the
Registrants  undertakes any  obligation to publicly  release any revision to its
forward-looking  statements to reflect events or circumstances after the date of
this Report.











                                   SIGNATURES




Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.




                                     EXELON CORPORATION
                                     EXELON GENERATION COMPANY, LLC


                                     /S/  Robert S. Shapard
                                     ------------------------------
                                     Robert S. Shapard
                                     Executive Vice President and
                                     Chief Financial Officer
                                     Exelon Corporation


June 6, 2003