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 30, 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
1-1401                    PECO ENERGY COMPANY                                           23-0970240
                          (a Pennsylvania corporation)
                          P.O. Box 8699 2301 Market Street
                          Philadelphia, Pennsylvania 19101-8699
                          (215) 841-4000
333-85496                 EXELON GENERATION COMPANY, LLC                                23-3064219
                          (a Pennsylvania limited liability company)
                          300 Exelon Way
                          Kennett Square, Pennsylvania 19348

                          (610) 765-6900










Item 9. Regulation FD Disclosure

A. As previously announced, on July 30, 2003, Exelon Corporation (Exelon)
conducted its Second Quarter 2003 Earnings Conference Call. The call was open to
all on a listen-only basis and was audio web-cast. Telephone replays will be
available through August 15, 2003. The U.S. call-in number for replays is
877/660-6853, and the international call-in number is 201/612-7415. The account
number is 4094 and the conference call number is 70578. In addition, the call
will be archived on Exelon's web site, www.exeloncorp.com; please select the
Investor Relations page.

During the call, management reviewed Exelon's financial results for its second
quarter ended June 30, 2003, which were disclosed in the news release issued on
July 29, 2003. Other matters that management discussed included:

Forward-looking matters
- -----------------------

Exelon's  third  quarter  2002  earnings of $1.70 per share  included a positive
impact of $0.16 per share  related  to  better-than-normal  weather  conditions.
Exelon has assumed  normal  weather for the balance of 2003, and so far in July,
it has been  cooler than  normal.  Also,  due to the changes in the  competitive
transition  charges  (CTC)at  Commonwealth  Edison  Company  (ComEd)  that  were
effective on June 1, 2003 and customer  switching,  Exelon expects about a $0.15
decrease in earnings at ComEd in the second half of 2003 relative to 2002.

Exelon's  full  year  earnings  are  impacted  by  increased  pension  and other
post-retirement  benefit costs from the prior year of about $125 million  before
income taxes, or about $0.24 per share.  The exercise of Exelon's  options under
the Midwest  Generation  contract is expected to provide net savings on capacity
charges of about $130 million before income taxes in 2003 compared with 2002. On
an  after-tax  basis that is about  $0.25 per share  positive  for the full year
2003. Both of these items will continue to impact earnings in the second half of
2003.

Exelon's  investment  in  Sithe  Energies,  Inc.  and  its  Exelon  New  England
operations will be modestly dilutive in 2003 compared to 2002. Dilution of about
$0.20 per share  related to the Exelon New  England  operations  is  included in
Exelon's full year earnings guidance. Given the delay in the start-up of the new
Exelon New England plants,  the dilution may be lower than $0.20 per share,  but
it will be weighted to the second half of the year. It is anticipated  that with
the pending exit from its ownership of the assets of Exelon  Boston  Generating,
that between  $0.14 and $0.15 per share of dilution  will be eliminated in 2004.
Also,  fewer nuclear plant refueling  outages in 2003 provided  savings of about
$60 million pre-tax, or $0.11 per share during the first half of 2003.

Exelon previously expected Exelon Enterprises  Company,  LLC (Enterprises) to be
breakeven during 2003, a $0.16 improvement over 2002. In the first half of 2003,
Enterprises  reported a $79  million  net loss,  which  includes  a $30  million
after-tax impairment charge associated with the anticipated sale of InfraSource,
Inc. Exelon expects  Enterprises to be about break even over the last six months
of 2003.

Lower interest expense will continue to have positive impact to Exelon over the
last six months of 2003.

Previously,  Exelon had  indicated  that it would target its dividend  payout to
grow to 60% of regulated operating earnings. Exelon is now targeting to increase
its dividend payout commensurate with total corporate earnings growth.

Exelon  management  stated that there are various  opportunities  to utilize its
cash aside from Exelon's  continued  plans of paying down debt  balances.  Three
other possible cash uses include 1) increases in dividend payouts,  2) increases
to the  equity at ComEd and PECO  Energy  Company  (PECO),  and 3) Exelon  share
buybacks.   The  share  buyback  possibility  is  not  considered  a  short-term
opportunity,  but rather,  something that would be considered several years from
now.


B. Additional information regarding the outstanding debt of Exelon and its
subsidiaries as of June 30, 2003 is attached hereto as Exhibit 99.


This combined  Form 8-K is being filed  separately  by Exelon,  ComEd,  PECO and
Exelon Generation Company, LLC (Generation) (Registrants). Information contained
herein  relating  to any  individual  registrant  has  been  furnished  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
                                            COMMONWEALTH EDISON COMPANY
                                            PECO ENERGY COMPANY
                                            EXELON GENERATION COMPANY, LLC

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



July 31, 2003