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 was not met. 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.  Mystic 8 and 9 are in  commercial
operation and Fore River is  substantially  complete,  and the unit is currently
undergoing testing.

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.  The
proposed  amendment required approval from 100% of the nineteen lenders in order
to be effective.  The proposed amendment has been approved.  EBG does not expect
that all of the projects will achieve "Project Completion" by July 11, 2003. EBG
cannot  predict  whether it 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 July 11, 2003. EBG
is continuing to evaluate all of its options and will continue  discussions with
the lenders.  EBG, however,  recognizes its continuing obligation to operate the
plants in a safe and reliable manner and commits to continuing to do so pursuant
to any applicable requirements of the New England Independent System Operator.

This  combined  Form 8-K is being filed  separately  by Exelon  Corporation  and
Exelon  Generation  Company,  LLC  (Registrants).  Information  contained herein
relating to either  individual  registrant has been filed by such  registrant on
its own behalf.  Neither  registrant makes any  representation as to information
relating to the 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  and  Generation,  (b)  the
Registrants' 2002 Annual Report on Form 10-K - ITEM 8. Financial  Statements and
Supplementary  Data:  Exelon - Note 19 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.  Neither 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 13, 2003