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


                                  July 3, 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).  The EBG 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 (Project Completion),  by June 12, 2003. On June 11,
2003,  EBG  negotiated an extension of the Project  Completion  date to July 11,
2003. Mystic 8 and 9 are in commercial operation,  although construction has not
progressed  to the point of Project  Completion.  Construction  of Fore River is
substantially  complete and the unit is currently  undergoing testing.  EBG does
not  anticipate  that the projects will achieve  Project  Completion by July 11,
2003. 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.

The lenders under the EBG Facility and EBG have executed a letter agreement as a
result of which the  lenders  are  precluded  during  the period  July 11,  2003
through August 29, 2003 from exercising any remedies  resulting from the failure
of all of the projects to achieve  Project  Completion.  EBG does not anticipate
that the  projects  will achieve  Project  Completion  by August 29,  2003.  The
agreement  provides  that the lenders'  obligation  to make advances to EBG will
remain suspended  during this period.  EBG is continuing to monitor the projects
and to assess all of its options  relating to the  projects,  and is  continuing
discussions with the lenders. EBG cannot predict what actions may be taken prior
to August 29, 2003, or what action the lenders may take subsequent to August 29,
2003.

Generation's investment in EBG is approximately $700 million. Depending upon the
ultimate outcome,  Generation may incur an impairment  related to its investment
in EBG. Additionally, EBG has reclassified all borrowings under the EBG Facility
as current liabilities.

This  combined  Form 8-K is being  filed  separately  by Exelon  and  Generation
(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


July 10, 2003