UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


In the Matter of                                             CERTIFICATE
Exelon Corporation                                               OF
File No. 70-9693                                             NOTIFICATION

Public Utility Holding Company Act of 1935 (PUHCA)

      Exelon  Corporation,  a Pennsylvania  corporation  and registered  holding
company  (Exelon),  hereby  submits the following  Certificate  of  Notification
pursuant  to Rule  24.  This  filing  is made  pursuant  to  Exelon's  Form  U-1
Application-Declaration, as amended (the "Financing U-1") and the Securities and
Exchange Commission's merger,  financing and investment orders. This certificate
reports  activity  in File No.  70-9693  for the  period  July 1,  2003  through
September 30, 2003.  Any  capitalized  terms used herein but not defined  herein
have the  respective  meanings  given in the Financing  U-1 or the  Commission's
Orders.

See Exhibit A for Glossary of Defined Terms

1.    Order - A computation in accordance with rule 53(a) setting forth Exelon's
      "aggregate  investment" in all EWGs and FUCOs, its "consolidated  retained
      earnings" and a calculation  of the amount  remaining  under the Requested
      EWG/FUCO Authority.

      Rule  53(a)  provides  that  a  registered  holding  company's   aggregate
      investment in EWGs and FUCOs may not exceed 50% of its retained  earnings.
      Exelon was granted  partial relief from this rule pursuant to the December
      8, 2000 Order,  which  provides for a Modified Rule 53 Test  applicable to
      Exelon's investments in EWGs and FUCOs of $4,000 million. At September 30,
      2003,  Exelon's  "aggregate  investment"  (as  defined in rule 53(a) under
      PUHCA)  in all  EWGs and  FUCOs  was  approximately  $2,758  million,  and
      accordingly, at September 30, 2003, Exelon's remaining investment capacity
      under the  Modified  Rule 53 Test was  approximately  $1,242  million.  At
      September 30, 2003, Exelon's  "consolidated retained earnings" (as defined
      in rule 53(a) under PUHCA) was $2,245 million.

2.    Order - A breakdown showing Exelon's  aggregate  investment in each EWG or
      FUCO counting against the Requested EWG/FUCO Authority.

      Pursuant  to a request  for  confidential  treatment  under rule 104(b) of
      PUHCA,  Exelon is  concurrently  filing in paper format as  Attachment  1,
      certain  information  concerning  the  aggregate  investment  by  EWG/FUCO
      Project.

3.    Order  -  Identification  of any  new EWG or  FUCO  counting  against  the
      requested  EWG/FUCO Authority in which Exelon has invested or committed to
      invest during the quarter.

      See Item 27 regarding a commitment made by Exelon on October 10, 2003.

4.    Order - Analysis  of the growth in  consolidated  retained  earnings  that
      segregates total earnings growth of EWGs and FUCOs from that  attributable
      to other subsidiaries of Exelon.

      Pursuant  to a request  for  confidential  treatment  under rule 104(b) of
      PUHCA,  Exelon is  concurrently  filing in paper format as  Attachment  1,
      total earnings growth by EWG and FUCO project in the third quarter, 2003.



                                      1



5.    Order - A statement  of revenues  and net income for each EWG and FUCO for
      the twelve months ending as of that quarter.

      Pursuant  to a request  for  confidential  treatment  under rule 104(b) of
      PUHCA,  Exelon is concurrently filing in paper format as Attachment 1, net
      income and  revenues  of  Exelon's  EWG and FUCO  Projects  for the twelve
      months ended September 30, 2003.

6.    Order - Consolidated  capitalization  ratios of Exelon,  with consolidated
      debt to include all short-term debt and  nonrecourse  debt of all EWGs and
      FUCOs.

      At September 30, 2003,  Exelon's  consolidated  capitalization  ratio was:
      debt 61%, common equity 35%,  preferred  securities of subsidiaries of 2%,
      and short-tem debt of 2%. (For these purposes,  "consolidated  debt" means
      all long-term debt,  long-term debt due within one year, notes payable and
      other   short-term   obligations,   including  any  short-term   debt  and
      non-recourse   debt  of  EWG/FUCO   Projects,   to  the  extent   normally
      consolidated under applicable financial reporting rules).

7.    Order - A table  showing,  as of the end of the  quarter,  the  dollar and
      percentage components of the capital structure of Exelon on a consolidated
      basis and of each Utility Subsidiary.

      The  capital  structures  of Exelon  and its  utility  subsidiaries  as of
      September 30, 2003 are as follows (in millions, except percentage data):


          -------------------------------- ----------------- ------------

          Exelon                           Amount            Ratio
          -------------------------------- ----------------- ------------

          Common Equity                              $8,327        34.9%
          -------------------------------- ----------------- ------------

          Preferred Securities                          509         2.1%
          -------------------------------- ----------------- ------------

          Long-Term Debt (includes                   14,638        61.3%
          current maturities)
          -------------------------------- ----------------- ------------

          Short-Term Debt                               408         1.7%
          -------------------------------- ----------------- ------------

          Total Capitalization                      $23,882       100.0%
          -------------------------------- ----------------- ------------





          ------------------------------- ------------------ ------------

          ComEd                           Amount             Ratio
          ------------------------------- ------------------ ------------

          Common Equity                              $5,942        47.3%
          ------------------------------- ------------------ ------------

          Preferred Securities                          351         2.8%
          ------------------------------- ------------------ ------------

          Long-Term    Debt    (includes              6,274        49.9%
          current maturities)
          ------------------------------- ------------------ ------------

          Short-Term Debt
          ------------------------------- ------------------ ------------

          Total Capitalization                      $12,567       100.0%
          ------------------------------- ------------------ ------------



                                       2




          ------------------------------- ------------------ ------------

          PECO                            Amount             Ratio
          ------------------------------- ------------------ ------------

          Common Equity                                $857        13.2%
          ------------------------------- ------------------ ------------

          Preferred                                     165         2.5%
          ------------------------------- ------------------ ------------

          Long-Term    Debt    (includes              5,482        84.1%
          current maturities)
          ------------------------------- ------------------ ------------

          Short-Term Debt                                12         0.2%
          ------------------------------- ------------------ ------------

          Total Capitalization                       $6,516       100.0%
          ------------------------------- ------------------ ------------





          ------------------------------- ------------------ ------------

          Genco                           Amount             Ratio
          ------------------------------- ------------------ ------------

          Member's Equity                            $2,952        51.0%
          ------------------------------- ------------------ ------------

          Preferred
          ------------------------------- ------------------ ------------

          Long-Term    Debt    (includes              2,361        40.8%
          current maturities)
          ------------------------------- ------------------ ------------

          Short-Term Debt                               477         8.2%
          ------------------------------- ------------------ ------------

          Total Capitalization                       $5,790       100.0%
          ------------------------------- ------------------ ------------




          ------------------------------- ------------------ ------------

          PEPCO                           Amount             Ratio
          ------------------------------- ------------------ ------------

          Common Equity                                 $14       100.0%
          ------------------------------- ------------------ ------------

          Preferred
          ------------------------------- ------------------ ------------

          Long-Term    Debt    (includes
          current maturities)
          ------------------------------- ------------------ ------------

          Short-Term Debt
          ------------------------------- ------------------ ------------

          Total Capitalization                          $14       100.0%
          ------------------------------- ------------------ ------------



                                       3







          ------------------------------- ------------------ ------------
          SPCO                            Amount             Ratio
          ------------------------------- ------------------ ------------

          Common Equity                                 $13       100.0%
          ------------------------------- ------------------ ------------

          Preferred
          ------------------------------- ------------------ ------------

          Long-Term    Debt    (includes
          current maturities)
          ------------------------------- ------------------ ------------

          Short-Term Debt
          ------------------------------- ------------------ ------------

          Total Capitalization                          $13       100.0%
          ------------------------------- ------------------ ------------





          ------------------------------- ------------------ ------------

          SECO                            Amount             Ratio
          ------------------------------- ------------------ ------------

          Common Equity                                  $6       100.0%
          ------------------------------- ------------------ ------------

          Preferred
          ------------------------------- ------------------ ------------

          Long-Term    Debt    (includes
          current maturities)
          ------------------------------- ------------------ ------------

          Short-Term Debt
          ------------------------------- ------------------ ------------

          Total Capitalization                           $6       100.0%
          ------------------------------- ------------------ ------------




          ------------------------------- ------------------ ------------
          ComEd Indiana                   Amount             Ratio
          ------------------------------- ------------------ ------------

          Common Equity                                 $12       100.0%
          ------------------------------- ------------------ ------------

          Preferred
          ------------------------------- ------------------ ------------

          Long-Term    Debt    (includes
          current maturities)
          ------------------------------- ------------------ ------------

          Short-Term Debt
          ------------------------------- ------------------ ------------

          Total Capitalization                          $12       100.0%
          ------------------------------- ------------------ ------------


8. Order - The market-to-book ratio of Exelon's common stock.

       At September 30, 2003, the market-to-book ratio of Exelon's common stock
was 2.50 to 1.

                                       4







9.    Order - The sale of any common stock or preferred securities by Exelon and
      the purchase price per share and the market price per share at the date of
      the agreement of sale.

      During the third  quarter of 2003,  1,173,712  shares of common stock were
      issued under various employee stock purchase and compensation plans with a
      price  range of $53.91 to $59.81  per  share.  The  average  price for the
      period was $58.98 per share.

10.   Order - The  total  number of shares  of  Exelon  common  stock  issued or
      issuable under options  granted during the quarter under employee  benefit
      plans and dividend reinvestment plans including any employee benefit plans
      or dividend reinvestment plans later adopted.

      Exelon  granted  4,600  stock  options in the third  quarter of 2003 at an
      average exercise price of $56.53 per share.

11.   Order - If  Exelon  common  stock  has been  transferred  to a  seller  of
      securities  of a company being  acquired,  the number of shares so issued,
      the value per share and whether the shares are  restricted in the hands of
      the acquirer.

      Exelon did not transfer any common  stock to a seller of  securities  of a
      company being acquired during the third quarter of 2003.

12.   Order - If a guarantee is issued by Exelon,  Genco or a  Subsidiary  where
      such guaranty is not exempt under Rule 52 during the quarter,  the name of
      the  guarantor,  the  name of the  beneficiary  of the  guarantee  and the
      amount, terms and purpose of the guarantee.




       ------------------------ ------------------ --------------------- --------------- ----------------
              Guarantor            Beneficiary            Amount              Term           Purpose
       ------------------------ ------------------ --------------------- --------------- ----------------
                                                                         
       Exelon                   EBSC                         $9,000,000        10 years            Lease
       ------------------------ ------------------ --------------------- --------------- ----------------
       Exelon                   Genco                      $270,500,000       12 months          Nuclear
                                                                                           Insurance and
                                                                                                 Trading
       ------------------------ ------------------ --------------------- --------------- ----------------
       Exelon                   Enterprises                $118,100,000       12 months      Trading and
                                                                                                  Surety
       ------------------------ ------------------ --------------------- --------------- ----------------




13.   Order - The amount and terms of any Exelon  indebtedness issued during the
      quarter.

      Overnight  commercial  paper issued through Chase Manhattan Bank on behalf
      of Exelon during the third quarter. Daily balances ranged from $60 million
      to $520 million at an average interest rate of 1.11%.

14.   Order - The amount and terms of any short-term  debt issued by any Utility
      Subsidiary during the quarter.

      A.    Overnight commercial paper issued through Bank One on behalf of PECO
            during the third quarter. Daily balances ranged from $-0- million to
            $240 million at an average interest rate of 1.05%.

      B.    ComEd had no commercial paper activity during the third quarter.

      C.    Contributions to and loans from the Utility Money Pool: The activity
            below  reflects  contributions  to and loans from the Money  Utility
            Pool for the quarter ending September 30, 2003.

      D.    Exelon, ComEd, PECO and Genco maintain a $1.5 billion 364-day credit
            facility to support  commercial  paper  issuances.  At September 30,
            2003,  sublimits under the credit  facility were


                                       5




            $1.0  billion,  $100 million and $400 million for Exelon  Corporate,
            ComEd and PECO,  respectively.  Genco did not have a sublimit  under
            the facility at September 30, 2003. Exelon Corporate, ComEd and PECO
            had  approximately  $720  million,  $360  million  and  $75  million
            available  under  the  credit  facility,  respectively,   reflecting
            commercial  paper,  letters  of  credit  and  loans  outstanding  at
            September  30,  2003.  At  September  30,  2003,   commercial  paper
            outstanding was $70 million and $12 million at Exelon  Corporate and
            PECO,  respectively.  ComEd and  Genco  did not have any  commercial
            paper outstanding at September 30, 2003.

E.          On  September  29, 2003,  Genco closed on an $850 million  revolving
            credit  facility  that  replaced  a $550  million  revolving  credit
            facility that had originally closed on June 13, 2003. Genco used the
            facility  to make the first  payment to Sithe  relating  to the $536
            million note that was used to purchase Exelon New England. This note
            was  restructured  in June 2003 to  provide  for a  payment  of $210
            million of the  principal on June 16, 2003,  payment of $236 million
            of the  principal  on the  earlier of  December 1, 2003 or change of
            control of Genco,  and  payment of the  remaining  principal  on the
            earlier  of  December  1,  2004 or change of  control  of Genco.  At
            September  30,  2003,  Genco had $640 million  available  under this
            credit facility.





       Contributions to the Utility Money Pool

        -------------------------------- ---------------------------------- --------------------------------
        Company                          Maximum Daily Contribution         Average Interest Rate
        -------------------------------- ---------------------------------- --------------------------------
                                                                                               
        ComEd of Indiana                                       $20,500,000                           0.937%
        -------------------------------- ---------------------------------- --------------------------------
        ComEd                                                 $344,000,000                           1.031%
        -------------------------------- ---------------------------------- --------------------------------
        PECO                                                   $59,000,000                           1.052%
        -------------------------------- ---------------------------------- --------------------------------


       Loans from the Utility Money Pool

        -------------------------------- ---------------------------------- --------------------------------
        Company                          Maximum Daily Borrowing            Average Interest Rate
        -------------------------------- ---------------------------------- --------------------------------
        ComEd                                                  $20,500,000                           0.937%
        -------------------------------- ---------------------------------- --------------------------------
        Genco                                                 $344,000,000                           1.031%
        -------------------------------- ---------------------------------- --------------------------------
        EBSC                                                   $59,000,000                           1.052%
        -------------------------------- ---------------------------------- --------------------------------




15.   Order  - The  amount  and  terms  of  any  financings  consummated  by any
      Non-Utility Subsidiary that is not exempt under rule 52.

      None.

16.   Order - All of the  information  that would have been  provided  on a Form
      U-6B-2  with  respect  to each  security  issuance  subject  thereto  that
      occurred during the applicable quarter.

      See Exhibit B.

17.   Order - Future  registration  statements filed under the Securities Act of
      1933 with respect to securities  described in the Rule 24 certificate will
      be  filed  or  incorporated  by  reference  as  exhibits  to the  Rule  24
      Certificate.

      None.



                                       6




18.   Order -  Consolidated  balance  sheets  as of the end of the  quarter  and
      separate  balance  sheets as of the end of the quarter  for each  company,
      including   Exelon,   that  has   engaged  in   jurisdictional   financing
      transactions during the quarter.

      See combined Form 10-Q for Exelon Corporation, ComEd, Genco and PECO filed
      on October 29, 2003.

19.   Order - A retained earnings analysis of Exelon on a consolidated basis and
      of  each   Utility   Subsidiary   detailing   gross   earnings,   goodwill
      amortization, dividends paid out of each capital account and the resulting
      capital account balances at the end of the quarter.

      The consolidated retained earnings analyses of Exelon, ComEd, PECO, Genco,
      PECO Energy Power Company, Susquehanna Power Company, Susquehanna Electric
      Company and ComEd of Indiana are attached as Exhibit C.

20.   Order - The notional amount and principal  terms of any Hedge  Instruments
      or Anticipatory Hedges entered into during the quarter and the identity of
      the other parties to the transaction.

      In the third quarter of 2003, Genco entered into forward starting swaps to
      hedge interest rate exposure  associated with future debt issuances.  Each
      of the swaps is  designated  as a cash flow hedge in that it  attempts  to
      minimize the  variability of the future interest  expense  associated with
      changes  in the  3-month  LIBOR  rate.  A table  summarizing  the  forward
      starting swap  transactions that were entered into in the third quarter is
      below.  Each of the  transactions  will be unwound prior to the associated
      debt issuance.




       ----------------------------------------------------------------------------------------------
           Exelon          Trade         Effective        Notional          Term      Counterparty
           Entity           Date           Date            Amount
       ----------------------------------------------------------------------------------------------
                                                         
            Genco         07/30/03       12/01/03       $100,000,000       10 year      JPMorgan
            Genco         08/27/03       12/01/03       $100,000,000       10 year      Citibank
       ----------------------------------------------------------------------------------------------




21.   Order - The name,  parent company and amount invested in any  intermediate
      subsidiary or financing  subsidiary  during the quarter and the amount and
      terms of any securities issued by those subsidiaries during the quarter.

       None.


22.   Order -  Provide  a copy of the  consolidated  balance  sheet  and  income
      statement for Ventures, Genco and Enterprises.

      Pursuant to a request  for  confidential  treatment  under rule 104 (b) of
      PUHCA,  Exelon is  concurrently  filing in paper format as Attachment 1, a
      consolidated   balance  sheet  and  income   statement  for  Ventures  and
      Enterprises. See Form 10-Q for Genco filed on October 29, 2003.


23.   Order - A  narrative  description  of  Development  Activities  and amount
      expended on Development Activities during the quarter just ended.

      Pursuant to a request  for  confidential  treatment  under rule 104 (b) of
      PUHCA,  Exelon is  concurrently  filing in paper format as Attachment 1, a
      description of Development  Activities and amount  expended on Development
      Activities during the quarter just ended.



                                       7




24.   Order - A narrative description of each investment made during the quarter
      just ended including:


      a.    Name of the company and its immediate parent.

              See table below.

      b.    Method  of  investment  (e.g.,  (1)  purchases  of  capital  shares,
            partnership   interests,   member  interests  in  limited  liability
            companies, trust certificates or other forms of voting or non-voting
            equity  interests;  (2)  capital  contributions;  (3)  open  account
            advances without  interest;  (4) loans;  and (5) guarantees  issued,
            provided  or  arranged  in  respect  of  the   securities  or  other
            obligations of any Intermediate Subsidiaries).

              See table below.

      c.    Type of company and/or its business  (e.g.,  EWG, FUCO, ETC, Rule 58
            Subsidiary,   Non-U.S.   Energy  Related  Subsidiary,   Intermediate
            Subsidiary, Financing Subsidiary).

              See table below.

      d.    With respect to Non-U.S.  Energy Related Subsidiaries,  the business
            engaged in and the locations (countries) where it does business.

              None.





--------------- --------------- ---------------- -------------------- ------------- --------------------------
                                   Company /
                  Company /       Subsidiary          Method of
    Immediate     Subsidiary        Type of          Investment          Amount     Purpose
    Parent                          Company
--------------- --------------- ---------------- -------------------- ------------- --------------------------
                                                                
Exelon          Exelon          Rule 58          Revolving credit     $500,000      Operating funds
Enterprises     Enterprises                      loan                 LIBOR plus
Company, LLC    Management,                                           50 basis
                Inc. points
--------------- --------------- ---------------- -------------------- ------------- --------------------------
Exelon          Exelon Energy   Rule 58          Revolving credit     $4,000,000    Operating funds
Enterprises     Company                          loan                 LIBOR plus
Company, LLC                                                          50 basis
                                                                      points
--------------- --------------- ---------------- -------------------- ------------- --------------------------
Exelon          Fischbach &     Rule 58          Revolving credit     $1,731,000    Operating funds
Enterprises     Moore                            loan                 LIBOR plus
Company, LLC    Electric, Inc.                                        50 basis
                                                                      points
--------------- --------------- ---------------- -------------------- ------------- --------------------------
Enterprises     Exelon          Rule 58          Revolving credit     $90,816       Provide operating funds
                Thermal                          loan
                Holdings, Inc.
--------------- --------------- ---------------- -------------------- ------------- --------------------------
Exelon          Exelon          Rule 58          Revolving credit     $100,000      Provide operating funds
Thermal         Thermal                          loan
Holdings, Inc.  Development,
                Inc.
--------------- --------------- ---------------- -------------------- ------------- --------------------------
Exelon          Exelon          Rule 58          Revolving credit     $200,000      Provide operating funds
Thermal         Thermal                          loan
Holdings, Inc.  Technologies,
                Inc.
--------------- --------------- ---------------- -------------------- ------------- --------------------------
Exelon Power    Conemaugh       Rule 58          Capital              $1,554,000    Operating funds
Holdings, LLC   Fuels, LLC                       contribution
--------------- --------------- ---------------- -------------------- ------------- --------------------------



                                       8


--------------- --------------- ---------------- -------------------- ------------- --------------------------
Genco           Conemaugh       Rule 58          Capital              $1,554,000    Operating funds
                Fuels, LLC                       contribution
--------------- --------------- ---------------- -------------------- ------------- --------------------------







25.   Order - With respect to  reorganizations  during the quarter,  a narrative
      description of the reorganization together with specifics as to the assets
      or securities  transferred,  the method of transfer and the price or other
      consideration for the transfer, and the names of the companies involved in
      the transfer.

      During the third quarter of 2003,  Exelon Energy Company,  a retail energy
      provider,   created  several   subsidiaries  and  transferred  assets  and
      liabilities  to such  companies in  anticipation  of eventually  disposing
      them. The assets, liabilities and equity interests in such companies after
      the restructuring were as follows:





       (In thousands)
      --------------------------- ----------------------- ------------------------- ------------------------
              Company                     Assets                  Liabilities               Equity
      --------------------------- ----------------------- ------------------------- ------------------------
                                                                                           
      AllEnergy Rhode Island                   $(190.13)                 $(395.78)                  $205.65
      Company, LLC
      --------------------------- ----------------------- ------------------------- ------------------------
      AllEnergy Massachusetts                 (3,585.38)                (7,463.38)                 3,878.00
      Company, LLC
      --------------------------- ----------------------- ------------------------- ------------------------
      AllEnergy Connecticut                     (977.83)                (2,035.47)                  1057.64
      Company, LLC.
      --------------------------- ----------------------- ------------------------- ------------------------
      AllEnergy Gas & Electric                (5,106.46)               (10,629.67)                 5,523.21
      Marketing Company, LLC
      --------------------------- ----------------------- ------------------------- ------------------------
      AllEnergy New York                        (937.09)                (1,950.66)                 1,013.57
      Company, LLC
      --------------------------- ----------------------- ------------------------- ------------------------
      AllEnergy New Jersey                      (624.73)                (1,300.44)                   675.71
      Company, LLC
      --------------------------- ----------------------- ------------------------- ------------------------
      AllEnergy Gas Marketing                 (1,724.79)                (3,590.34)                 1,865.55
      Co. New York, LLC
      --------------------------- ----------------------- ------------------------- ------------------------
      AllEnergy Gas Marketing                   (434.59)                  (904.65)                   470.06
      Co. New Jersey, LLC
      --------------------------- ----------------------- ------------------------- ------------------------
      Exelon Energy Company                    13,581.00                 28,270.40              (14,689.40)
      --------------------------- ----------------------- ------------------------- ------------------------




      During the third quarter of 2003,  AllEnergy  Rhode Island  Company,  LLC,
      AllEnergy  Massachusetts  Company, LLC and AllEnergy  Connecticut Company,
      LLC were sold for $168,000, $46,000 and $9,000, respectively.

      InfraSource,  Inc., a Rule 58 holding  company,  was sold on September 24,
      2003 along with several of its subsidiaries.  The assets,  liabilities and
      equity of  InfraSource,  Inc that were not sold  were  contributed  to F&M
      Holdings Company, LLC, which was created on September 18, 2003.





       (In thousands)
      ------------------------------ -------------------- ------------------------- ------------------------
      Company                        Assets               Liabilities               Equity
      ------------------------------ -------------------- ------------------------- ------------------------
                                                                                        
      F&M Holdings Co., LLC                     $111,302                  $(9,733)               $(101,569)
      ------------------------------ -------------------- ------------------------- ------------------------





                                       9



26.   Order  - A chart  showing,  as of the end of  such  quarterly  period  and
      reflecting  any  reorganization   accomplished  during  the  quarter,  all
      associated  companies  of  Exelon,  in  addition  to  Ventures,  that  are
      Non-Utility  Subsidiaries  and identifying each as an EWG, FUCO, ETC, Rule
      58 Subsidiary, Non-U.S. Energy Related Subsidiary, Intermediate Subsidiary
      or Financing Subsidiary, as applicable, and indicating Exelon's percentage
      equity ownership in each such entity.



Exelon Corporation Subsidiaries and Investments
As of September 30, 2003
                                                 Common         Parent        Other
                                                 Shares         Voting        Voting          Type of Business
Tier Company name                                Owned          Power         Power            And Authority
--------------------------------------         -------------  -------        -------     ----------------------
                                                                                      
Exelon Corporation                                                                       Public Utility Holding
                                                                                         Company
  1  Exelon Business Services Company                      1  100.00%                    Subsidiary Service
                                                                                         Company
  1  Unicom Resources, Inc.                              100  100.00%                    Inactive
  1  Unicom Assurance Company, Ltd. *                General  100.00%                    Approved in Merger
                                                 Partnership                             Order (Captive
                                                    Interest                             Insurance Company)
  1  Exelon Investment Holdings, LLC*        Member Interest  100.00%                    Intermediate Company -
                                                                                         Holding company for tax
                                                                                         advantaged transactions
                                                                                         - housing
     Exelon Capital Trust I                              N/A  100.00%                    Financing company
     Exelon Capital Trust II                             N/A  100.00%                    Financing company
     Exelon Capital Trust III                            N/A  100.00%                    Financing company
  1  Exelon Ventures Company, LLC            Member Interest  100.00%                    Public Utility Holding
                                                                                         Company First Tier
  2  SynFuel I, LLC                          Member Interest  100.00%                    Intermediate holding
                                                                                         company
  2  SynFuel II, LLC                         Member Interest  100.00%                    Intermediate holding
                                                                                         company
  2  Exelon Generation Company, LLC          Member Interest  100.00%                    Public Utility Holding
                                                                                         Company Second Tier and
                                                                                         Utility Company
  3  Exelon Generation Finance Company,      Member Interest  100.00%                    Approved in Financing
     LLC                                                                                 Order (Financing)
  3  ExTex Retail Services Company, LLC      Member Interest  100.00%                    Rule 58 - 5



                                       10


  3  Penesco Company, LLC                    Member Interest  100.00%                    Rule 58
  3  Port City Power, LLC *                  Member Interest  100.00%                    Approved in Investment
                                                                                         Order (Development
                                                                                         Company)
  3  Southeast Chicago Energy Project,       Member Interest  100.00%                    EWG
     LLC
  3  Concomber Ltd                                   General  100.00%                    Approved in Merger
                                                 Partnership                             Order (Captive
                                                    Interest                             Insurance Company)
  3  Cenesco Company, LLC                    Member Interest  100.00%                    Rule 58
  3  Exelon Allowance Management             Member Interest  100.00%                    Rule 58
     Company, LLC
  3  Susquehanna Electric Company                      1,000  100.00%                    Utility Company
  3  Exelon Power Holdings, LP                       Limited  85.00%   Genco  - LP       Intermediate Subsidiary
                                   Partnership
                                    Interest
                                                     Limited  14.00%   Peaker Dev.
                                                 Partnership           Gen.       - GP
                                    Interest
                                                     Limited   1.00%   Ventures - LP
                                   Partnership
                                    Interest
  4  Keystone Fuels, LLC                     Member Interest  20.99%                     Rule 58
  4  Conemaugh Fuels,  LLC                   Member Interest  20.72%                     Rule 58
  4  Exelon (Fossil) Holdings, Inc.                           100.00%                    Intermediate holding
                                                                                         company
  5  Sithe Energies, Inc.                                     49.90%                     Combo Exempt Wholesale
                                                                                         Generator and  Rule 58
  3  AmerGen Energy Company, LLC             Member Interest  50.00%                     Exempt Wholesale
                                                                                         Generator
  4  AmerGen Consolidation, LLC*             Member Interest  100.00%                    Intermediate company



                                       11


  4  AmerGen TMI NQF, LLC*                   Member Interest  100.00%                    Intermediate company
  4  AmerGen Oyster Creek NQF, LLC*          Member Interest  100.00%                    Intermediate company
  4  AmerGen Clinton NQF, LLC*               Member Interest  100.00%                    Intermediate company
  3  PECO Energy Power Company                       984,000  100.00%                    Electric Utility
                                                                                         Company and Public
                                                                                         Utility  Holding Company
  4  Susquehanna Power Company                     1,273,000  100.00%                    Electric Utility Company
  5  The Proprietors of the Susquehanna                   NA  100.00%                    Inactive
     Canal*
  3  Exelon Generation International,                     NA  100.00%                    Intermediate Subsidiary
     Inc. *                                                                              (1)
  3  Exelon Peaker Development General,      Member Interest  100.00%                    Intermediate company
     LLC
  3  Exelon Peaker Development Limited,      Member Interest  100.00%                    Intermediate company
     LLC
  4  ExTex LaPorte Limited Partnership           Partnership  99.00%   Peaker Ltd. - LP  Exempt Wholesale
                                                    Interest                             Generator
                                                 Partnership   1.00%   Peaker Gen. - GP
                                                   Interest
  3  ExTex Marketing, LLC                    Member Interest  100.00%                    Rule 58
  4  ExTex Power, LP                             Partnership  99.00%   ExTexMarketing -  Rule 58
                                                    Interest           LP
                                                 Partnership   1.00%   Genco - GP
                                                    Interest
  3  Exelon AOG Holding # 1, Inc.                             100.00%                    Intermediate Company
  3  Exelon AOG Holding # 2, Inc.                             100.00%                    Intermediate Company
  4  Exelon New England Power Marketing,         Partnership  99.00%   AOG # 2, LP       Rule 58
     LP                                             Interest
                                                 Partnership   1.00%   AOG # 1, GP
                                                    Interest


                                       12


  3  Exelon New England Holdings, LLC        Member Interest  100.00%                    Intermediate Company
  4  Exelon New England Power Services,                       100.00%                    Rule 58
     Inc.
  4  Exelon New England Development, LLC     Member Interest  100.00%                    Development Company
  4  Exelon Wyman, LLC                       Member Interest  100.00%                    Exempt Wholesale
                                                                                         Generator
  4  Exelon Edgar, LLC *                     Member Interest  100.00%                    Exempt Wholesale
                                                                                         Generator
  4  Exelon Framingham, LLC                  Member Interest  100.00%                    Exempt Wholesale
                                                                                         Generator
  4  Exelon Framingham Development, LLC*     Member Interest  100.00%                    Development Company
  4  Exelon West Medway, LLC                 Member Interest  100.00%                    Exempt Wholesale
                                                                                         Generator
  4  Exelon West Medway Expansion, LLC       Member Interest  100.00%                    Development Company
  4  Exelon West Medway Development, LLC     Member Interest  100.00%                    Development Company
  4  Exelon Boston Power Services, LLC       Member Interest  100.00%                    Development Company
  4  Exelon New Boston, LLC                  Member Interest  100.00%                    Exempt Wholesale
                                                                                         Generator
  4  Exelon Hamilton, LLC*                   Member Interest  100.00%                    Rule 58
  4  Exelon Boston Generating, LLC           Member Interest  100.00%                    Intermediate Company
  5  Exelon Mystic, LLC                      Member Interest  100.00%                    Exempt Wholesale
                                                                                         Generator


                                       13


  5  Exelon Mystic Development, LLC          Member Interest  100.00%                    Exempt Wholesale
                                                                                         Generator
  5  Exelon ForeRiver Development, LLC       Member Interest  100.00%                    Exempt Wholesale
                                                                                         Generator
  3  Exelon PowerLabs, LLC                   Member Interest  100.00%                    Rule 58 (vii)
  2  Exelon Enterprises Company, LLC         Member Interest  100.00%                    Non-Utility Holding
                                                                                         Company Second Tier
  3  Exelon Energy Company                               100  100.00%                    Rule 58
  4  AllEnergy Gas & Electric Marketing      Member Interest  100.00%                    Rule 58
     Company, LLC
  5  AllEnergy Gas Marketing Co. New         Member Interest  100.00%                    Rule 58
     Jersey, LLC
  5  AllEnergy New Jersey Company, LLC       Member Interest  100.00%                    Rule 58
  5  AllEnergy Gas Marketing Co. New         Member Interest  100.00%                    Rule 58
     York, LLC
  5  AllEnergy New York Company, LLC         Member Interest  100.00%                    Rule 58
  5  Texas Ohio Gas, Inc.                                100  100.00%                    Rule 58
  3  Exelon Enterprises Management, Inc.                      100.00%                    Approved in Merger

                                                                                         Order
                                                                                         (investments
                                                                                         in
                                                                                         Rule
                                                                                         58
                                                                                         and
                                                                                         Telecomm.)
  4  Exelon Capital Partners, Inc.                            100.00%                    Approved in Merger

                                                                                         Order
                                                                                         (investments
                                                                                         in
                                                                                         Rule
                                                                                         58
                                                                                         and
                                                                                         Telecomm.)
  5  ECP Telecommunications Holdings,        Member Interest  100.00%                    Holds ETCs
     LLC
  6  NEON Communications, Inc.                                10.01%                     Approved in Merger
                                                                                         Order (Investment)
  6  Enerwise Global Technologies, Inc.                       17.70%                     ETC
  6  Ikimbo, Inc.                                             14.80%                     ETC
  6  SoftComp, Inc (PermitsNow)                               15.51%                     Inactive
  6  OmniChoice.com, Inc.                                     30.00%                     ETC
  6  Planalytics, Inc.                                        12.00%                     ECP
  6  Everest Broadband Networks                               15.00%                     ETC
  6  Energy Trading Company                                   100.00%                    ETC



                                       14


  5  Exelon Enterprises Investments,                          100.00%                    Approved in Merger
     Inc.
                                                                                         Order
                                                                                         (investments
                                                                                         in
                                                                                         Rule
                                                                                         58
                                                                                         and
                                                                                         Telecomm.)
  6  Kinetic Venture Fund I, LLC                              22.22%                     Merger U-1 Amendment #
                                                                                         5 (Reserved
                                                                                         Jurisdiction)
  6  Kinetic Venture Fund II, LLC                             14.30%                     Merger U-1 Amendment #
                                                                                         5 (Reserved
                                                                                         Jurisdiction)
  6  UTECH Climate Challenge Fund, L.P.                       24.30%                     Approved in Merger
                                                                                         Order (energy related
                                                                                         - venture capital Rule
                                                                                         58)
  5  Clean Air Partners, Inc.                                 13.90%                     ETC
  6  EEI Telecommunications Holdings,        Member Interest  100.00%                    ETC
     LLC
  7  Exelon Communications Holdings, LLC     Member Interest  100.00%                    ETC
  8  PHT Holdings, LLC                       Member Interest  100.00%                    Held by ETC
  9   PECO Hyperion Telecommunications           Partnership  49.00%   PHT Holdings      Held by ETC
                                    Interest
                                                 Partnership   1.00%   PECO
                                    Interest
  8  Exelon Communications Company, LLC      Member Interest  100.00%                    Held by ETC
  4  CIC Global, LLC                         Member Interest  50.00%                     Held by ETC
  4  Unigrid Energy, LLC                     Member Interest  50.00%                     Inactive
  3  F&M Holdings Company, LLC               Member Interest  100.00%                    Rule 58
  4  VSI Group, Inc.                                     100  100.00%                    Rule 58
  5  EGW Meter Services, LLC *               Member Interest  100.00%                    Rule 58



                                       15


  4  InfraSource Integrated Services,                         100.00%                    Rule 58
     Inc.
  5  EIS Engineering, Inc.                                    100.00%                    Rule 58
  6  InfraSource F.S. LLC *                  Member Interest  100.00%                    Rule 58
  6  InfraSource E.S. LLC *                  Member Interest  100.00%                    Rule 58
  4  NEWCOSY, Inc.                                         1  100.00%                    Rule 58
  4  Fischbach and Moore Electric, Inc.                    1  100.00%                    Rule 58
  4  NEWCOTRA, Inc.*                                       1  100.00%                    Rule 58
  5  Fischbach and Moore, Inc.                             1  100.00%                    Rule 58
  6  Fischbach and Moore Electric                          1  100.00%                    Rule 58
     Contracting, Inc.*
  6  T.H. Green Electric Co., Inc.*                        1  100.00%                    Rule 58
  5  Rand-Bright Corporation                               1  100.00%                    Rule 58
     OSP Servicios S.A. de C.V.                               100.00%                    Rule 58
  5  Utility Locate & Mapping Services,                    1  100.00%                    Rule 58
     Inc.*
  5  Universal Network Development,                           49.00%                     Rule 58
     Corp.*
  4  EIS Investments, LLC*                   Member Interest  100.00%                    Rule 58
  5  WCB Services, LLC *                     Member Interest  49.00%                     Rule 58
  3  Exelon Services, Inc.                                    100.00%                    Rule 58
  4  Exelon Services Federal Group, Inc.                      100.00%                    Rule 58
  3  Unicom Power Holdings, LLC              Member Interest  100.00%                    Rule 58
  3  Unicom Power Marketing, Inc.                        100  100.00%                    Rule 58
  3  Adwin Equipment Company                                  100.00%                    Rule 58
  3  Exelon Thermal Holdings, Inc.                       100  100.00%                    Rule 58
  4  ETT North America, Inc.                              10  100.00%                    Rule 58
  5  Northwind Thermal Technologies                       10  100.00%                    Merger Order Reserved
     Canada, Inc.                                                                        Jurisdiction ;

                                                                                         Investment
                                                                                         U-1
                                                                                         in
                                                                                         Docket
                                                                                         70-9691
                                                                                         (Rule
                                                                                         58
                                                                                         operating
                                                                                         outside
                                                                                         the
                                                                                         U.S.)


                                       16


  6  ETT Canada, Inc.                                     10  100.00%                    Merger Order Reserved
                                                                                         Jurisdiction ;
                                                                                         Investment U-1 in
                                                                                         Docket 70-9691 (Rule 58
                                                                                         operating outside the
                                                                                         U.S.)
  7  Northwind Windsor                                    JV  50.00%                     Merger Order Reserved
                                                                                         Jurisdiction ;
                                                                                         Investment U-1 in
                                                                                         Docket 70-9691 (Rule 58
                                                                                         operating outside the
                                                                                         U.S.)
  4  ETT Nevada, Inc.                                    100  100.00%                    Rule 58
  5  Northwind Aladdin, LLC                  Member Interest  75.00%                     Rule 58
  5  Northwind Las Vegas, LLC                Member Interest  50.00%                     Rule 58
  4  Northwind Chicago, LLC                  Member Interest  100.00%                    Rule 58
  4  Exelon Thermal Development, Inc.                    100  100.00%                    Rule 58
  4  Exelon Thermal Technologies, Inc.                   100  100.00%                    Rule 58
  4  ETT Boston, Inc.                                    100  100.00%                    Rule 58
  5  Northwind Boston, LLC                   Member Interest  25.00%                     Rule 58
  4  ETT Houston, Inc.                                   100  100.00%                    Rule 58
  4  ETT National Power, Inc.                            100  100.00%                    Rule 58
  5  Northwind Midway, LLC                   Member Interest  100.00%                    Rule 58
  1  Unicom Investment, Inc.                             100  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)
  2  Scherer Holdings 1, LLC                 Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)
  2  Scherer Holdings 2, LLC                 Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)
  2  Scherer Holdings 3, LLC                 Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)


                                       17


  2  Spruce Holdings G.P. 2000, LLC          Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)
  2  Spruce Holdings L.P. 2000, LLC          Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)
  3  Spruce Equity Holdings, L.P.                Partnership  99.00%   Spruce LP         Approved in Merger
                                                    Interest                             Order (Tax advantaged
                                                                                         transactions)
                                                 Partnership   1.00%   Spruce GP
                                    Interest
  4  Spruce Holdings Trust                   Trust  Interest  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)
  2  Wansley Holdings 1, LLC                 Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)
  2  Wansley Holdings 2, LLC                 Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Tax advantaged
                                                                                         transactions)
  1  Exelon Energy Delivery Company, LLC     Member Interest  100.00%                    Intermediate public
                                                                                         utility holding company
  2  PECO Energy                                 170,478,507  100.00%                    Electric and Gas
     Company                                                                             Utility Company
  3  East Coast Natural Gas Cooperative,             Limited  41.12%                     Rule 58
     LLP                                         Partnership
                                    Interest
  3  Horizon Energy Company*                           1,000  100.00%                    Inactive
  3  Adwin Realty Company                              1,000  100.00%                    Merger Order Reserved
                                                                                         Jurisdiction (Real
                                                                                         Estate)
  4  Ambassador II Joint Venture                          NA  50.00%                     Merger Order Reserved
                                                                                         Jurisdiction (Real
                                                                                         Estate)
  4  Bradford Associates                                  NA  50.00%                     Merger Order Reserved
                                                                                         Jurisdiction (Real
                                                                                         Estate)
  4  Henderson Ambassador Associates                      NA  50.00%                     Merger Order Reserved
                                                                                         Jurisdiction (Real
                                                                                         Estate)



                                       18


  3  PECO Energy Transition Trust                         NA  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  3  PECO Energy Capital Corp.                         1,000  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  4  PECO Energy Capital Trust II                         NA  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  4  PECO Energy Capital Trust III                        NA  100.00%                    Approved in Merger
                                                                                         Order (Financing)
     PECO Energy Capital Trust IV                         NA  100.00%                    Financing
     PECO Energy Capital Trust V*                         NA  100.00%                    Financing
     PECO Energy Capital Trust VI*                        NA  100.00%                    Financing
  4  PECO Energy Capital, LP                              NA   3.00%                     Approved in Merger
                                                                                         Order (Financing)
  3  ExTel Corporation, LLC                  Member Interest  100.00%                    Intermediate Subsidiary
  4  PECO Wireless, LP                                    NA  99.00%   PECO              Intermediate Subsidiary
                                                               1.00%   ExTel
  5  ATNP Finance Company                                100  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  5  PEC Financial Services, LLC             Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  3  Adwin, Cogeneration, Inc. *                              50.00%                     ERC
  2  Commonwealth Edison                         127,020,904  99.90%                     Public Utility Holding
     Company                                                                             Company, Second Tier;
                                                                                         Electric Utility
                                                                                         Company
  3  Commonwealth Edison Company of                  908,084  100.00%                    Electric Utility Company
     Indiana, Inc.
  3  ComEd Financing I                                    NA  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  3  ComEd Financing II                                   NA  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  3  ComEd Financing III*                                 NA  100.00%                    Financing
  3  ComEd Funding, LLC                      Member Interest  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  4  ComEd Transitional Funding Trust                     NA  100.00%                    Approved in Merger
                                                                                         Order (Financing)
  3  Commonwealth Research Corporation                   200  100.00%                    Rule 58
  3  Edison Development Company                          741  100.00%                    Approved in Merger
                                                                                         Order (economic and
                                                                                         community development)



                                       19


  3  Edison Development Canada Inc.                   15,158  100.00%                    Merger Order reserved
                                                                                         jurisdiction;
                                                                                         Investment U-1 in
                                                                                         Docket 70-9691
                                                                                         (economic and community
                                                                                         development)
  4  Edison Finance Partnership                           NA  100.00%                    Merger Order reserved
                                                                                         jurisdiction;
                                                                                         Investment U-1 in
                                                                                         Docket 70-9691
                                                                                         (Financing)
  1  Boston Financial Institutional Tax                   NA  10.72%                     Approved in Merger
     Credit Fund X                                                                       Order (tax advantaged
                                                                                         transactions - housing)
  1  Boston Financial Institutional Tax                   NA  43.69%                     Approved in Merger
     Credit Fund XIV                                                                     Order (tax advantaged
                                                                                         transactions - housing)
  1  Boston Financial Institutional Tax                   NA  14.19%                     Approved in Merger
     Credit Fund XIX                                                                     Order (tax advantaged
                                                                                         transactions - housing)
  1  Boston Financial Institutional Tax                   NA  34.54%                     Approved in Merger
     Credit Fund XXI                                                                     Order (tax advantaged
                                                                                         transactions - housing)
  1  Related Corporate Partners XII, L.P.                 NA  36.03%                     Approved in Merger
                                                                                         Order (tax advantaged
                                                                                         transactions - housing)
  1  Related Corporate Partners XIV, L.P.                 NA  15.99%                     Approved in Merger
                                                                                         Order (tax advantaged
                                                                                         transactions - housing)
  1  Summit Corporate Tax Credit Fund II                  NA  33.00%                     Approved in Merger
                                                                                         Order (tax advantaged
                                                                                         transactions - housing)
  1  USA Institutional Tax Credit Fund                    NA  24.49%                     Approved in Merger
     XXII                                                                                Order (tax advantaged
                                                                                         transactions - housing)
     New Companies
     -------------
     F&M Holdings Company, LLC formed in Delaware, 9/18/2003. Holding company




                                       20


     for former InfraSource companies that were not sold on 9/24/2003. SynFuel
     I, LLC, formation in Delaware on 7/25/2003.
     Intermediate holding company
     SynFuel II, LLC, formation in Delaware on 7/25/2003.
     Intermediate holding company
     AllEnergy Gas Marketing Co. New Jersey, LLC
     Formation in Delaware on 7/10/2003
     Retail marketing of natural gas and energy-related services.
     AllEnergy Gas Marketing Co. New York, LLC
     Formation in Delaware on 7/10/2003
     Retail marketing of natural gas and energy-related services.
     Exelon Capital Trust I
     Formation in Delaware on 8/25/2003
     Exelon Capital Trust II
     Formation in Delaware on 8/25/2003
     Exelon Capital Trust III
     Formation in Delaware on 8/25/2003

Dispositions
------------
     Aconite Corporation                 Sold September 24, 2003
     Blair Park Services, Inc.           Sold September 24, 2003
     Chowns Communications, Inc.         Sold September 24, 2003
     Dacon Corporation                   Sold September 24, 2003
     Dashiell
     Corporation                         Sold September 24, 2003
     Dashiell Holdings Corporation       Sold September 24, 2003
     Electric Services, Inc.             Sold September 24, 2003
     Gas Distribution Contractors,
     Inc.                                Sold September 24, 2003
     InfraSource Corporate Services,
     Inc.                                Sold September 24, 2003
     InfraSource Underground
     Construction, LLC                   Sold September 24, 2003
     InfraSource, Inc.                   Sold September 24, 2003
     International Communications
     Services, Inc.                      Sold September 24, 2003
     M.J. Electric, Inc.                 Sold September 24, 2003
     Mechanical Specialties Incorporated Sold September 24, 2003
     Mid-Atlantic Pipeliners, Inc.       Sold September 24, 2003
     MRM Technical Group, Inc.           Sold September 24, 2003
     Mueller Distribution Contractors,
     Inc.                                Sold September 24, 2003
     Mueller Pipeliners, Inc.            Sold September 24, 2003
     OSP Consultants, Inc.               Sold September 24, 2003
     OSP Telcomm de Mexico, S.A. de C.V. Sold September 24, 2003
     OSP Telecom, Inc.                   Sold September 24, 2003
     OSP, Inc.                           Sold September 24, 2003



                                       21


     RJE Telecom, Inc.                   Sold September 24, 2003
     Sunesys of Virginia, Inc.           Sold September 24, 2003
     Sunesys, Inc.                       Sold September 24, 2003
     Trinity Industries, Inc.            Sold September 24, 2003
     AllEnergy Rhode Island Company,
     LLC.                                Sold September 1, 2003
     AllEnergy Massachusetts Company,
     LLC.                                Sold September 1, 2003
     AllEnergy Connecticut Company,
     LLC.                                Sold September 1, 2003
     * Inactive

27. Additional information.
      On October 3, 2003,  Genco  announced  that it will buy  British  Energy's
      50-percent interest in AmerGen Energy Co., LLC for $276.5 million,  giving
      Exelon sole ownership of AmerGen and its three nuclear plants.

      The amount matches the offer by FPL Energy,  which  announced on September
      11, 2003 that it intended to buy British Energy's share of AmerGen.  Under
      the AmerGen limited liability  company operating  agreement between Exelon
      and British  Energy,  either could  exercise a "right of first refusal" by
      matching any bona-fide third-party offer agreed to by the other party.

      AmerGen owns the Clinton  Power  Station in Central  Illinois,  Three Mile
      Island  Unit  1  near  Harrisburg,   Pennsylvania  and  the  Oyster  Creek
      Generating  Station on the New Jersey shore. The three stations  represent
      about 2,500 megawatts of generating capacity.

      The AmerGen  purchase is  expected  to be  completed  in the first half of
      2004. See Exelon Corporation Form 8-K filed on October 3, 2003.





                                       22




                                S I G N A T U R E

         Pursuant to the requirements of PUHCA, the undersigned company has duly
caused this document to be signed on its behalf by the undersigned thereunto
duly authorized.

Date: November 26, 2003

                                       EXELON CORPORATION

                                       By: /s/ Matthew F. Hilzinger
                                       -----------------------------
                                       Vice President and Corporate Controller














                                       23





                                    Exhibit A
                                    ---------

Glossary of Defined Terms
-------------------------

AmerGen                    AmerGen Energy Company, LLC
ComEd                      Commonwealth Edison Company
ComEd of Indiana           Commonwealth Edison Company of Indiana, Inc.
EBSC                       Exelon Business Services Company
Exelon                     Exelon Corporation
Enterprises                Exelon Enterprises Company, LLC
EWGs                       Exempt wholesale generators
FUCO                       Foreign utility company
ExTex                      ExTex LaPorte Limited Partnership
Genco                      Exelon Generation Company, LLC
PECO                       PECO Energy Company
PEPCO                      PECO Energy Power Company
Power Holdings             Exelon Power Holdings, LP
PETT                       PECO Energy Transition Trust
Sithe                      Sithe Energies, Inc.
ENEH                       Exelon New England Holdings, LLC
Southeast Chicago          Southeast Chicago Energy Project, LLC
SECO                       Susquehanna Electric Company
SPCO                       Susquehanna Power Company






                                       24




                               Exhibit B - Item 16
                               -------------------
A.
Commonwealth Edison Company has issued the security described herein which issue
was exempted from the provisions of section 6(a) of the Act and was neither the
subject of a declaration or application on Form U-1 nor included within the
exemption provided by Rule U-48.

1.     Type of securities (draft, promissory note): First Mortgage Bonds

2.     Issue, renewal or guaranty: Issue.

3.     Principal amount of each security: $250 million.

4.     Rate of interest per annum of each security: 4.74%

5.     Date of issue, renewal or guaranty of each security: August 25, 2003

6.     If renewal of security, give date of original issue: NA.

7.     Date of maturity of each security (in the case of demand notes, indicate
       demand): 2010.

8.     Name of the person to whom each security was issued, renewed or
       guaranteed: Various.

9.     Collateral given with each security: First mortgage.

10.    Consideration given for each security: Cash.

11.    Application of proceeds for each security: The proceeds from the sale of
       the bonds were used to finance the repayment and early retirement of
       long-term debt.

12.    Indicate by a check after the applicable statement below whether the
       issue, renewal or guaranty of each security was exempt from the
       provisions of section 6 (a) because of: a. the provisions contained in
       the first sentence of section 6 (b): [ ] b. the provisions contained in
       the fourth sentence 6 (b): [ ] c. the provisions in any rule of the
       Commission other than Rule U-48: [X]

13.   If the security or securities were exempt from the provisions of section 6
      (a) by virtue of the first sentence of section 6 (b), give the figures
      which indicate that the security or securities aggregate (together with
      all other then outstanding notes and drafts of a maturity of nine months
      or less, exclusive of days of grace, as to which such company is primarily
      or secondarily liable) not more than 5 per centum of the principal amount
      and par value of the other securities of such company then outstanding.
      (Demand notes, regardless of how long they may have been outstanding,
      shall be considered as maturing in not more than nine months for the
      purpose of the exemption from Section 6 (a) of the Act granted by the
      first sentence of Section 6 (b): Not Applicable.

14.   If the security or securities are exempt from the provisions of section 6
      (a) because of the fourth sentence of section 6 (b), name the security
      outstanding on January 1, 1935, pursuant to the terms of which the
      security or securities herein described have been issued: Not Applicable.

15.   If the securities are exempt from the provisions of section 6 (a) because
      of any rule of the Commission other than Rule U-48 designate the rule
      under which exemption is claimed: Rule 52 (a).


                                       25



B.
--
Commonwealth Edison Company has issued the security described herein which issue
was exempted from the provisions of section 6(a) of the Act and was neither the
subject of a declaration or application on Form U-1 nor included within the
exemption provided by Rule U-48.

1.     Type of securities (draft, promissory note): Pollution Control Revenue
       Refunding Bonds.

2.     Issue, renewal or guaranty: Issue.

3.     Principal amount of each security: $42 million.

4.     Rate of interest per annum of each security: Variable.

5.     Date of issue, renewal or guaranty of each security: September 24, 2003.

6.     If renewal of security, give date of original issue: NA.

7.     Date of maturity of each security (in the case of demand notes, indicate
       demand): November 1, 2019.

8.     Name of the person to whom each security was issued, renewed or
       guaranteed: Various.

9.     Collateral given with each security: A series of ComEd's first mortgage
       bonds.

10.    Consideration given for each security: Cash.

11.    Application of proceeds for each security: The proceeds from the sale of
       the bonds will be used to refund certain obligations issued to refinance
       the cost of certain pollution control and solid waste disposal facilities
       of ComEd.

12.    Indicate by a check after the applicable statement below whether the
       issue, renewal or guaranty of each security was exempt from the
       provisions of section 6 (a) because of: a. the provisions contained in
       the first sentence of section 6 (b): [ ] b. the provisions contained in
       the fourth sentence 6 (b): [ ] c. the provisions in any rule of the
       Commission other than Rule U-48: [X]

13.   If the security or securities were exempt from the provisions of section 6
      (a) by virtue of the first sentence of section 6 (b), give the figures
      which indicate that the security or securities aggregate (together with
      all other then outstanding notes and drafts of a maturity of nine months
      or less, exclusive of days of grace, as to which such company is primarily
      or secondarily liable) not more than 5 per centum of the principal amount
      and par value of the other securities of such company then outstanding.
      (Demand notes, regardless of how long they may have been outstanding,
      shall be considered as maturing in not more than nine months for the
      purpose of the exemption from Section 6 (a) of the Act granted by the
      first sentence of Section 6 (b): Not Applicable.

14.   If the security or securities are exempt from the provisions of section 6
      (a) because of the fourth sentence of section 6 (b), name the security
      outstanding on January 1, 1935, pursuant to the terms of which the
      security or securities herein described have been issued: Not Applicable.

15.   If the securities are exempt from the provisions of section 6 (a) because
      of any rule of the Commission other than Rule U-48 designate the rule
      under which exemption is claimed: Rule 52 (a).




                                       26


C.
--

Exelon Enterprises Management, Inc. has issued the security described herein
which issue was exempted from the provisions of section 6(a) of the Act and was
neither the subject of a declaration or application on Form U-1 nor included
within the exemption provided by Rule U-48.

1.     Type of securities (draft, promissory note): Intrasystem financing
       transaction.

2.     Issue, renewal or guaranty: Issue.

3.     Principal amount of each security: $500 thousand.

4.     Rate of interest per annum of each security: LIBOR plus 50 basis points.

5.     Date of issue, renewal or guaranty of each security: Third quarter, 2003.

6.     If renewal of security, give date of original issue: NA.

7.     Date of maturity of each security (in the case of demand notes, indicate
       demand): Revolving credit.

8.     Name of the person to whom each security was issued, renewed or
       guaranteed: Exelon Enterprises Company, LLC.

9.     Collateral given with each security: None.

10.    Consideration given for each security: Cash.

11.    Application of proceeds for each security: Operations.

12.    Indicate by a check after the applicable statement below whether the
       issue, renewal or guaranty of each security was exempt from the
       provisions of section 6 (a) because of: a. the provisions contained in
       the first sentence of section 6 (b): [ ] b. the provisions contained in
       the fourth sentence 6 (b): [ ] c. the provisions in any rule of the
       Commission other than Rule U-48: [X]

13.   If the security or securities were exempt from the provisions of section 6
      (a) by virtue of the first sentence of section 6 (b), give the figures
      which indicate that the security or securities aggregate (together with
      all other then outstanding notes and drafts of a maturity of nine months
      or less, exclusive of days of grace, as to which such company is primarily
      or secondarily liable) not more than 5 per centum of the principal amount
      and par value of the other securities of such company then outstanding.
      (Demand notes, regardless of how long they may have been outstanding,
      shall be considered as maturing in not more than nine months for the
      purpose of the exemption from Section 6 (a) of the Act granted by the
      first sentence of Section 6 (b): Not Applicable.

14.   If the security or securities are exempt from the provisions of section 6
      (a) because of the fourth sentence of section 6 (b), name the security
      outstanding on January 1, 1935, pursuant to the terms of which the
      security or securities herein described have been issued: Not Applicable.

15.   If the securities are exempt from the provisions of section 6 (a) because
      of any rule of the Commission other than Rule U-48 designate the rule
      under which exemption is claimed: Rule 52 (b).


                                       27



D.
--
Exelon Energy Company has issued the security described herein which issue was
exempted from the provisions of section 6(a) of the Act and was neither the
subject of a declaration or application on Form U-1 nor included within the
exemption provided by Rule U-48.

1.   Type of securities (draft, promissory note): Intercompany financing.

2.   Issue, renewal or guaranty: Issue.

3.   Principal amount of each security: $4 million.

4.   Rate of interest per annum of each security: LIBOR plus 50 basis points .

5.   Date of issue, renewal or guaranty of each security: Third quarter, 2003.

6.   If renewal of security, give date of original issue: NA.

7.   Date of maturity of each security (in the case of demand notes, indicate
     demand): Revolving credit.

8.   Name of the person to whom each security was issued, renewed or guaranteed:
     Exelon Enterprises, Inc..

9.   Collateral given with each security: None.

10.  Consideration given for each security: Cash.

11.  Application of proceeds for each security: Operations.

12.  Indicate by a check after the applicable statement below whether the issue,
     renewal or guaranty of each security was exempt from the provisions of
     section 6 (a) because of: a. the provisions contained in the first sentence
     of section 6 (b): [ ] b. the provisions contained in the fourth sentence 6
     (b): [ ] c. the provisions in any rule of the Commission other than Rule
     U-48: [X]

13.   If the security or securities were exempt from the provisions of section 6
      (a) by virtue of the first sentence of section 6 (b), give the figures
      which indicate that the security or securities aggregate (together with
      all other then outstanding notes and drafts of a maturity of nine months
      or less, exclusive of days of grace, as to which such company is primarily
      or secondarily liable) not more than 5 per centum of the principal amount
      and par value of the other securities of such company then outstanding.
      (Demand notes, regardless of how long they may have been outstanding,
      shall be considered as maturing in not more than nine months for the
      purpose of the exemption from Section 6 (a) of the Act granted by the
      first sentence of Section 6 (b): Not Applicable.

14.   If the security or securities are exempt from the provisions of section 6
      (a) because of the fourth sentence of section 6 (b), name the security
      outstanding on January 1, 1935, pursuant to the terms of which the
      security or securities herein described have been issued: Not Applicable.

15.   If the securities are exempt from the provisions of section 6 (a) because
      of any rule of the Commission other than Rule U-48 designate the rule
      under which exemption is claimed: Rule 52 (b).


                                       28


E.
--
Fischbach & Moore Electric, Inc. has issued the security described herein which
issue was exempted from the provisions of section 6(a) of the Act and was
neither the subject of a declaration or application on Form U-1 nor included
within the exemption provided by Rule U-48.

1.      Type of securities (draft, promissory note): Intercompany financing
        transaction.

2.      Issue, renewal or guaranty: Issue.

3.      Principal amount of each security: $1.731 million.

4.      Rate of interest per annum of each security: LIBOR plus 50 basis points.

5.      Date of issue, renewal or guaranty of each security: Third quarter,
        2003.

6.      If renewal of security, give date of original issue: NA.

7.      Date of maturity of each security (in the case of demand notes, indicate
        demand): Revolving credit loan.

8.      Name of the person to whom each security was issued, renewed or
        guaranteed: Exelon Enterprises Company, LLC.

9.      Collateral given with each security: None.

10.     Consideration given for each security: Cash.

11.     Application of proceeds for each security: Operating funds.

12.     Indicate by a check after the applicable statement below whether the
        issue, renewal or guaranty of each security was exempt from the
        provisions of section 6 (a) because of: a. the provisions contained in
        the first sentence of section 6 (b): [ ] b. the provisions contained in
        the fourth sentence 6 (b): [ ] c. the provisions in any rule of the
        Commission other than Rule U-48: [X]

13.   If the security or securities were exempt from the provisions of section 6
      (a) by virtue of the first sentence of section 6 (b), give the figures
      which indicate that the security or securities aggregate (together with
      all other then outstanding notes and drafts of a maturity of nine months
      or less, exclusive of days of grace, as to which such company is primarily
      or secondarily liable) not more than 5 per centum of the principal amount
      and par value of the other securities of such company then outstanding.
      (Demand notes, regardless of how long they may have been outstanding,
      shall be considered as maturing in not more than nine months for the
      purpose of the exemption from Section 6 (a) of the Act granted by the
      first sentence of Section 6 (b): Not Applicable.

14.   If the security or securities are exempt from the provisions of section 6
      (a) because of the fourth sentence of section 6 (b), name the security
      outstanding on January 1, 1935, pursuant to the terms of which the
      security or securities herein described have been issued: Not Applicable.

15.   If the securities are exempt from the provisions of section 6 (a) because
      of any rule of the Commission other than Rule U-48 designate the rule
      under which exemption is claimed: Rule 52 (b).




                                       29


F.
--
Exelon Thermal Development, Inc. has issued the security described herein which
issue was exempted from the provisions of section 6(a) of the Act and was
neither the subject of a declaration or application on Form U-1 nor included
within the exemption provided by Rule U-48.

1.      Type of securities (draft, promissory note): Intercompany financing
        transaction.

2.      Issue, renewal or guaranty: Issue.

3.      Principal amount of each security: $100 thousand.

4.      Rate of interest per annum of each security: LIBOR plus 50 basis points.

5.      Date of issue, renewal or guaranty of each security: Third quarter,
        2003.

6.      If renewal of security, give date of original issue: NA.

7.      Date of maturity of each security (in the case of demand notes, indicate
        demand): Revolving credit loan.

8.      Name of the person to whom each security was issued, renewed or
        guaranteed: Exelon Thermal Holdings, Inc.

9.      Collateral given with each security: None.

10.     Consideration given for each security: Cash.

11.     Application of proceeds for each security: Operating funds.

12.     Indicate by a check after the applicable statement below whether the
        issue, renewal or guaranty of each security was exempt from the
        provisions of section 6 (a) because of: a. the provisions contained in
        the first sentence of section 6 (b): [ ] b. the provisions contained in
        the fourth sentence 6 (b): [ ] c. the provisions in any rule of the
        Commission other than Rule U-48: [X]

13.     If the security or securities were exempt from the provisions of section
        6 (a) by virtue of the first sentence of section 6 (b), give the figures
        which indicate that the security or securities  aggregate (together with
        all other then outstanding notes and drafts of a maturity of nine months
        or less,  exclusive  of days of  grace,  as to  which  such  company  is
        primarily  or  secondarily  liable)  not more  than 5 per  centum of the
        principal  amount and par value of the other  securities of such company
        then  outstanding.  (Demand notes,  regardless of how long they may have
        been outstanding,  shall be considered as maturing in not more than nine
        months for the purpose of the  exemption  from  Section 6 (a) of the Act
        granted by the first sentence of Section 6 (b): Not Applicable.

14.     If the security or securities  are exempt from the provisions of section
        6 (a) because of the fourth sentence of section 6 (b), name the security
        outstanding  on  January  1,  1935,  pursuant  to the terms of which the
        security  or  securities   herein   described  have  been  issued:   Not
        Applicable.

15.     If the  securities  are  exempt  from the  provisions  of  section 6 (a)
        because of any rule of the Commission other than Rule U-48 designate the
        rule under which exemption is claimed: Rule 52 (b).


                                       30


G.
--
Exelon Thermal Technologies, Inc. has issued the security described herein which
issue was exempted from the provisions of section 6(a) of the Act and was
neither the subject of a declaration or application on Form U-1 nor included
within the exemption provided by Rule U-48.

1.      Type of securities (draft, promissory note): Intrasystem financing
        transaction.

2.      Issue, renewal or guaranty: Issue.

3.      Principal amount of each security: $200 thousand.

4.      Rate of interest per annum of each security: LIBOR plus 50 basis points.

5.      Date of issue, renewal or guaranty of each security: Third quarter,
        2003.

6.      If renewal of security, give date of original issue: NA.

7.      Date of maturity of each security (in the case of demand notes, indicate
        demand): Revolving credit loan.

8.      Name of the person to whom each security was issued, renewed or
        guaranteed: Exelon Thermal Holdings, Inc.

9.      Collateral given with each security: None.

10.     Consideration given for each security: Cash.

11.     Application of proceeds for each security: Operating funds.

12.     Indicate by a check after the applicable statement below whether the
        issue, renewal or guaranty of each security was exempt from the
        provisions of section 6 (a) because of: a. the provisions contained in
        the first sentence of section 6 (b): [ ] b. the provisions contained in
        the fourth sentence 6 (b): [ ] c. the provisions in any rule of the
        Commission other than Rule U-48: [X]

13.     If the security or securities were exempt from the provisions of section
        6 (a) by virtue of the first sentence of section 6 (b), give the figures
        which indicate that the security or securities  aggregate (together with
        all other then outstanding notes and drafts of a maturity of nine months
        or less,  exclusive  of days of  grace,  as to  which  such  company  is
        primarily  or  secondarily  liable)  not more  than 5 per  centum of the
        principal  amount and par value of the other  securities of such company
        then  outstanding.  (Demand notes,  regardless of how long they may have
        been outstanding,  shall be considered as maturing in not more than nine
        months for the purpose of the  exemption  from  Section 6 (a) of the Act
        granted by the first sentence of Section 6 (b): Not Applicable.

14.     If the security or securities  are exempt from the provisions of section
        6 (a) because of the fourth sentence of section 6 (b), name the security
        outstanding  on  January  1,  1935,  pursuant  to the terms of which the
        security  or  securities   herein   described  have  been  issued:   Not
        Applicable.

15.     If the  securities  are  exempt  from the  provisions  of  section 6 (a)
        because of any rule of the Commission other than Rule U-48 designate the
        rule under which exemption is claimed: Rule 52 (b).


                                       31


H.
--
Exelon Thermal Holdings, Inc. has issued the security described herein which
issue was exempted from the provisions of section 6(a) of the Act and was
neither the subject of a declaration or application on Form U-1 nor included
within the exemption provided by Rule U-48.

1.      Type of securities (draft, promissory note): Intrasystem financing
        transaction.

2.      Issue, renewal or guaranty: Issue.

3.      Principal amount of each security: $90,816.

4.      Rate of interest per annum of each security: LIBOR plus 50 basis points.

5.      Date of issue, renewal or guaranty of each security: Third quarter,
        2003.

6.      If renewal of security, give date of original issue: NA.

7.      Date of maturity of each security (in the case of demand notes, indicate
        demand): Revolving credit loan.

8.      Name of the person to whom each security was issued, renewed or
        guaranteed: Edison Finance Partnership.

9.      Collateral given with each security: None.

10.     Consideration given for each security: Cash.

11.     Application of proceeds for each security: Operating funds.

12.     Indicate by a check after the applicable statement below whether the
        issue, renewal or guaranty of each security was exempt from the
        provisions of section 6 (a) because of: a. the provisions contained in
        the first sentence of section 6 (b): [ ] b. the provisions contained in
        the fourth sentence 6 (b): [ ] c. the provisions in any rule of the
        Commission other than Rule U-48: [X]

13.     If the security or securities were exempt from the provisions of section
        6 (a) by virtue of the first sentence of section 6 (b), give the figures
        which indicate that the security or securities  aggregate (together with
        all other then outstanding notes and drafts of a maturity of nine months
        or less,  exclusive  of days of  grace,  as to  which  such  company  is
        primarily  or  secondarily  liable)  not more  than 5 per  centum of the
        principal  amount and par value of the other  securities of such company
        then  outstanding.  (Demand notes,  regardless of how long they may have
        been outstanding,  shall be considered as maturing in not more than nine
        months for the purpose of the  exemption  from  Section 6 (a) of the Act
        granted by the first sentence of Section 6 (b): Not Applicable.

14.     If the security or securities  are exempt from the provisions of section
        6 (a) because of the fourth sentence of section 6 (b), name the security
        outstanding  on  January  1,  1935,  pursuant  to the terms of which the
        security  or  securities   herein   described  have  been  issued:   Not
        Applicable.

15.     If the  securities  are  exempt  from the  provisions  of  section 6 (a)
        because of any rule of the Commission other than Rule U-48 designate the
        rule under which exemption is claimed: Rule 52 (b).


                                       32



                               Exhibit C - Item 19



                   Exelon Corporation and Subsidiary Companies
                           Retained Earnings Analysis
                    For the Quarter Ended September 30, 2003
                                  (In millions)


Beginning Balance                                    $2,475
Net Income                                             (102)

Dividends:
  Common Stock                                         (163)
                                                     -------
  Ending Balance                                     $2,210
                                                     =======




                  PECO Energy Company and Subsidiary Companies
                           Retained Earnings Analysis
                    For the Quarter Ended September 30, 2003
                                  (In millions)


Beginning Balance                                      $455
Net Income                                              141
Dividends:
   Common Stock                                         (78)
   Preferred Stock                                       (1)
                                                     -------
Ending Balance                                         $517
                                                     =======



                  Commonwealth Edison and Subsidiary Companies
                           Retained Earnings Analysis
                    For the Quarter Ended September 30, 2003
                                  (In millions)


Beginning Balance                                      $767
  Net Income                                            163
  Dividends:
     Common Stock                                       (94)
                                                     -------
Ending Balance                                         $836
                                                     =======


                                Exelon Generation
                         Undistributed Earnings Analysis
                    For the Quarter Ended September 30, 2003
                                  (In millions)


Beginning Balance                                    $1,077
  Net Income (Loss)                                    (428)
  Distributions to Members                              (72)
                                                     -------
Ending Balance                                         $577
                                                     =======



                                       33



                            PECO Energy Power Company
                           Retained Earnings Analysis
                    For the Quarter Ended September, 30 2003
                                  (In millions)


Beginning Balance                                       $42
  Net Income                                              3
  Dividends:
     Common Stock                                         0
                                                     -------
Ending Balance                                          $45
                                                     =======


                            Susquehanna Power Company
                           Retained Earnings Analysis
                    For the Quarter Ended September 30, 2003
                                  (In millions)


Beginning Balance                                       $38
  Net Income                                              2
  Dividends:
     Common Stock                                         0
                                                     -------
Ending Balance                                          $40
                                                     =======


                          Susquehanna Electric Company
                           Retained Earnings Analysis
                    For the Quarter Ended September 30, 2003
                                  (In millions)


Beginning Balance                                       $ 5
  Net Income                                              0
  Dividends:
     Common Stock                                         0
                                                     -------
Ending Balance                                           $5
                                                     =======

                                ComEd of Indiana
                           Retained Earnings Analysis
                    For the Quarter Ended September 30, 2003
                                  (In millions)


Beginning Balance                                       $ 2
  Net Income                                              0
  Dividends:
     Common Stock                                         0
                                                     -------
Ending Balance                                          $ 2
                                                     =======