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


                                 August 13, 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

On August 13, 2003, Exelon  Corporation  (Exelon) issued a note to its financial
community in which Exelon  Generation  Company,  LLC  (Generation)  announced an
agreement  with entities  controlled by Reservoir  Capital Group  (Reservoir) to
sell 50% of Sithe Energies,  Inc.  (Sithe),  after closing on a call transaction
announced  in May 2003.  In a separate  transaction,  Sithe has entered  into an
agreement with Reservoir to sell entities holding six U.S. generating facilities
and an entity holding Sithe's Canadian assets.  This note to Exelon's  financial
community and a listing of Sithe's  principal assets as of December 31, 2002 are
attached to this Report as exhibits.

Exhibit Index

Exhibit No.        Description
99.1               Note to Exelon's Financial Community
99.2               Listing of Sithe's Principal Assets as of December 31, 2002


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  factors  discussed  herein,  as well as the  items  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 each of 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


August 13, 2003