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 25, 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 1-1839 COMMONWEALTH EDISON COMPANY 36-0938600 (an Illinois corporation) 10 South Dearborn Street - 37th Floor P.O. Box 805379 Chicago, Illinois 60680-5379 (312) 394-4321 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 June 26, 2003, Exelon Corporation issued a note to its financial community announcing that Exelon Generation Company, LLC (Generation) has notified Midwest Generation, LLC of the exercise of Generation's call option under the existing Coal Generating Stations Purchase Power Agreement dated December 15, 1999. The note is attached to this report as Exhibit 99. This combined Form 8-K is being filed separately by Exelon Corporation, Commonwealth Edison Company 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 COMMONWEALTH EDISON COMPANY EXELON GENERATION COMPANY, LLC /S/ Robert S. Shapard ----------------------------------- Robert S. Shapard Executive Vice President and Chief Financial Officer Exelon Corporation June 26, 2003
Exhibit 99

                                                                   [Exelon Logo]
________________________________________________________________________________
Exelon Corporation                                   www.exeloncorp.com
P.O. Box 805379
Chicago, IL 60680-5379



June 26, 2003

Note to Exelon's Financial Community:


             Exelon Generation Company, LLC Exercises Options under
              Purchase Power Agreement with Midwest Generation, LLC


On June 25, 2003, Exelon Generation notified Midwest  Generation,  LLC (Midwest)
of its  exercise of Exelon  Generation's  call option  under the  existing  Coal
Generating  Stations  Purchase  Power  Agreement  dated December 15, 1999 (PPA).
Exelon Generation is a subsidiary of Exelon Corporation  (Exelon).  Midwest is a
subsidiary of Edison Mission Energy and Edison International.  Exelon Generation
has elected to exercise its call option on 687 MWs of the capacity for the fifth
contract year, 2004. This option exercise is for the year 2004 and has no effect
in 2003  because  the 2003 supply plan is already in place.  By  exercising  the
call, Exelon Generation will take the output of the following Midwest generating
units during 2004 at the contract price included in the PPA.

Waukegan Unit 8  -         361 MWs
Fisk Unit 19     -         326 MWs
                           -------
Total                      687 MWs

Exelon  Generation did not exercise its option on the 578 MWs of capacity at the
remaining  option  units and will not take the output from the  following  units
during 2004 under the existing contract.

Waukegan Unit 6    -       100 MWs
Crawford Unit 7    -       216 MWs
Will County Unit 3 -       262 MWs
                           -------
Total                      578 MWs

Under  the  PPA,  during  the  fifth  contract  year,  2004,  Exelon  Generation
contracted for 1,696 MWs of non-option  capacity from Midwest with a call option
on 1,265 MWs of capacity. With the June 25th exercise of the call option, Exelon
Generation  will take the 1,696 MWs of  non-option  capacity  and 687 MWs of the
option  capacity  from  Midwest.  Exelon  Generation  retains  its 2004  options
relating to certain of Midwest's Collins units (1,084 MWs) and peaker units (694
MWs) and will make a decision on those options by early October 2003.

2004 is the last year under the existing  five-year PPA contract  between Exelon
and Midwest  Generation.  Providing  reliable  service to  customers in Illinois
served by delivery subsidiary ComEd remains a top priority of Exelon.







Exelon's  exercise  of  its  options  under  the  PPA  is  expected  to  provide
approximately  $100 million  (pre-tax) of capacity cost savings in 2004 compared
with 2003. Net pre-tax savings,  after  replacement  energy and other associated
costs,  are expected to be between $20 and $40 million.  The actual cost savings
achieved  will  be a  function  of  Exelon  Generation's  supply  portfolio  and
wholesale energy prices in 2004.

For  additional  information  please  contact me at (312)  394-7696  or Marybeth
Flater at (312) 394-8354.

Sincerely,

Linda C. Byus, CFA
Vice President Investor Relations

================================================================================




Except for the historical  information contained herein,  certain of the matters
discussed  in this news  release  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  Exelon
Corporation's  2002  Annual  Report  on  Form10-K  in (a)  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  and (b) 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
Securities and Exchange  Commission  (SEC) by Exelon  Corporation,  Commonwealth
Edison  Company,   PECO  Energy  Company  and  Exelon  Generation  Company,  LLC
(Registrants).  Readers  are  cautioned  not to place  undue  reliance  on these
forward-looking  statements,  which  apply  only as of the  date  of this  press
release.  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 press release.