SECURITIES AND EXCHANGE COMMISSION
                                Washington, D.C.

                                    FORM U5B
                             REGISTRATION STATEMENT
                       Filed Pursuant to Section 5 of the
                   Public Utility Holding Company Act of 1935


                       Exelon Energy Delivery Company, LLC

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

                               Name of Registrant
               Name, Title And Address Of Officer To Whom Notices
        And Correspondence Concerning This Statement Should Be Addressed

                               Randall E. Mehrberg
                     Senior Vice President & General Counsel
                               Exelon Corporation
                            10 South Dearborn Street
                                   37th Floor
                             Chicago, Illinois 60603





                            Glossary of Defined Terms

Act                     Public Utility Holding Company Act of 1935, as amended

ComEd                   Commonwealth Edison Company

Commission              Securities and Exchange Commission

Exelon Energy Delivery  Exelon Energy Delivery Company, LLC

Exelon Enterprises      Exelon Enterprises Company, LLC

Exelon                  Exelon Corporation

Exelon Generation       Exelon Generation Company, LLC

Exelon Ventures         Exelon Ventures Company, LLC

Financing U-1           The Form U-1 Application/Declaration filed by Exelon
                        Corporation, et al. in File No. 70-9693

Merger U-1              The Form U-1  Application/Declaration  filed by Exelon
                        Corporation in File No. 70-9645

N/A                     Not applicable or not available

PECO                    PECO Energy Company

SECO                    Susquehanna Electric Company

Unicom                  Unicom Corporation


--------------------------------------------------------------------------------
                                                                        Page 1





                             REGISTRATION STATEMENT

1.  Exact Name of Registrant:  Exelon Energy Delivery Company, LLC

2.  Address of Principal Executive Offices:  10 South Dearborn Street
                                             37th Floor
                                             Chicago, Illinois 60603

3.  Name and address of Chief Accounting Officer:  Jean H. Gibson
                                                   Vice President and
                                                   Corporate Controller
                                                   Exelon  Corporation,
                                                   10 South Dearborn Street
                                                   37th Floor
                                                   Chicago, Illinois 60603

4.  Certain information as to the registrant and each subsidiary
    company thereof:







                                  Exelon Energy Delivery Company, LLC & Subsidiaries



Name of Company                                           Organization        State         Type of Business
---------------                                           ------------        -----         ----------------
                                                                                  
Exelon Energy Delivery Company, LLC                       LLC                 DE            Holding Company
   Commonwealth Edison Company                            C-Corp              IL            Electric Utility
     Commonwealth Edison Company of Indiana, Inc.         C-Corp              IN            Energy-related
     ComEd Financing I                                    Trust               DE            Financing
     ComEd Financing II                                   Trust               DE            Financing
     ComEd Funding, LLC                                   LLC                 DE            Financing
       ComEd Transitional Funding Trust                   Trust               DE            Financing
     Commonwealth Research Corporation                    C-Corp              IL            Energy/Utility related
     Edison Development Company                           C-Corp              DE            Real Estate
     Edison Development Canada Inc.                       C-Corp              Canada        Land Development
       Edison Finance Partnership                         Ptrshp              Canada        Financing
   PECO Energy Company                                    C-Corp              PA            Electric and Gas Utility
     PECO Energy Capital Corp.                            C-Corp              DE            Financing
       PECO Energy Capital, LP                            LP                  DE            Financing
       PECO Energy Capital Trust II                       Trust               DE            Financing
       PECO Energy Captial Trust III                      Trust               DE            Financing
     PECO Energy Transition Trust                         SBT                 DE            Financing
     ExTel, LLC                                           LLC                 DE            Financing
       PECO Finance                                       LP                  DE            Financing
         ATNP Finance Company                             C-Corp              DE            Financing
         PEC Financial Services, LLC                      LLC                 PA            Financing
     Adwin Realty Company                                 C-Corp              PA            Real Estate
       Ambassador II Joint Venture                        Ptrshp              PA            Real Estate
       Bradford Associates                                Ptrshp              PA            Real Estate
       Franklin Town Towers Associates                    Ptrshp              PA            Real Estate
       Henderson Ambassador Associates                    Ptrshp              PA            Real Estate
       Riverwatch                                         Ptrshp              PA            Real Estate
       Route 724                                          Ptrshp              PA            Real Estate
       Signa                                              Ptrshp              PA            Real Estate
     East Coast Natural Gas Cooperative, LLP              LLC                 DE            Energy-related
     Horizon Energy Company                               C-Corp              PA            Inactive (Energy-related)






--------------------------------------------------------------------------------
                                                                        Page 2





                                    BUSINESS

5.   (a) The general  character of the business done by the  registrant  and its
     subsidiaries,  separated as between the holding  companies,  public utility
     subsidiaries   (as  defined  in  the  Act)  and  the  various   non-utility
     subsidiaries.

     Information  regarding the general  business of Exelon Energy  Delivery and
     its  subsidiaries  can be found in the  following  document:  Item 1 of the
     Annual  Report of Exelon on Form 10-K for the year ended  December 31, 2000
     (File No. 1-16169), which is incorporated by reference herein.

     (b)  Any  substantial  changes  which  may  have  occurred  in the  general
          character of the business of such companies  during the preceding five
          years.

          Information  regarding any substantial changes which may have occurred
          in the general character of the business of Exelon Energy Delivery and
          its  subsidiaries  during  the  preceding  five  years can be found in
          Exelon's  form 10-K for 2000 and PECO's 10-Ks for each of the previous
          five years (File No. 1-1401) and Unicom's form 10-K for the years 1996
          -1999  (File  No.  1-11375)  which  were  previously  filed  with  the
          Commission and are incorporated by reference herein.

                                    PROPERTY

6.   Describe  briefly  the general  character  and  location  of the  principal
     plants,  properties,  and other important  physical units of the registrant
     and its subsidiaries,  showing  separately (a) public utility and (b) other
     properties. If any principal plant or important unit is not held in fee, so
     state and describe how held.

          See Item 2 of the  Annual  Report  of Exelon on Form 10-K for the year
     ended December 31, 2000 (File No. 1-16169).


                             INTERSTATE TRANSACTIONS

7.   For each  public  utility  company  in the  holding  company  system of the
     registrant  which is engaged in the  transmission of electric energy or gas
     in  interstate  commerce,  furnish the following  information  for the last
     calendar year:






                                    Electric Energy        Gas
Total Annual Sales                                          KWh           Mcf
------------------------------------------------------------------------------
Interstate Transactions:

     Name of State

Delivered Out of State

Received from Out of State

                ComEd,  ComEd of  Indiana,  SECO and PECO  have on file with the
                FERC  their   respective   2000  FERC  Form  1  which   includes
                information regarding the transmission of electric energy. These
                reports also have been  provided as Exhibits  G-1,  G-2, G-3 and
                G-4.

                PECO does not own and operate facilities for the transmission of
                gas in interstate  commerce.  PECO purchases gas  transportation



--------------------------------------------------------------------------------
                                                                        Page 3



                and storage  services for their retail  customers from regulated
                interstate pipeline suppliers.

                             SECURITIES OUTSTANDING

8.   Submit  the  following  information  concerning  the  registrant  and  each
     subsidiary thereof as of the latest available date:

                                   FUNDED DEBT

     (a)  For each issue or series of funded debt, including funded debt secured
          by liens on property owned, whether or not such debt has been assumed:
          (Do  not  include  here  any  contingent  liabilities  reported  under
          paragraph 8(c).)

             BY PERMISSION OF THE STAFF OF THE COMMISSION, COLUMNS E
                          THROUGH I HAVE BEEN OMITTED.

                             AS OF DECEMBER 31, 2000





                                                                           Amount Issued
Name of Obligor              Title of Issue         Amount Authorized       Less Retired
-------------------------------------------------------------------------------------------
                                                                     
COMED                       First Mortgage Bonds        $200,000,000          $200,000,000
                            Series 85, 7.375%
                            Due September 15, 2002

COMED                       First Mortgage Bonds        100,000,000           100,000,000
                            Series 96, 6.625%
                            Due July 15, 2003

COMED                       First Mortgage Bonds         26,000,000            26,000,000
                            Pollution Control
                            Series 1994A, 5.300%
                            Due January 15, 2004

COMED                       First Mortgage Bonds        225,000,000           225,000,000
                            Series 93, 7.000%
                            Due July 1, 2005

COMED                       First Mortgage Bonds        100,000,000           100,000,000
                            Series 76, 8.250%
                            Due October 1, 2006

COMED                       First Mortgage Bonds        125,000,000           125,000,000
                            Series 78, 8.375%
                            Due October 15, 2006

COMED                       First Mortgage Bonds        110,000,000           110,000,000
                            Pollution Control
                            Series 1996A, 4.400%
                            Due December 1, 2006

COMED                       First Mortgage Bonds         89,400,000            89,400,000
                            Pollution Control
                            Series 1996B, 4.400%
                            Due December 1, 2006

COMED                       First Mortgage Bonds        140,000,000           140,000,000
                            Series 83, 8.000%
                            Due May 15, 2008

COMED                       First Mortgage Bonds         20,000,000            20,000,000
                            Pollution Control
                            Series 1994B, 5.700%
                            Due January 15, 2009

COMED                       First Mortgage Bonds        100,000,000           100,000,000
                            Pollution Control
                            Series 1991, 7.250%
                            Due June 1, 2011


--------------------------------------------------------------------------------
                                                                        Page 4




COMED                       First Mortgage Bonds        220,000,000           220,000,000
                            Series 92, 7.625%
                            Due April 15, 2013

COMED                       First Mortgage Bonds        150,000,000           150,000,000
                            Series 94, 7.500%
                            Due July 1, 2013

COMED                       First Mortgage Bonds         20,000,000            20,000,000
                            Pollution Control
                            Series 1994C, 5.850%
                            Due January 15, 2014

COMED                       First Mortgage Bonds         91,000,000            91,000,000
                            Pollution Control
                            Series 1994D, 6.750%
                            Due March 1, 2015

COMED                       First Mortgage Bonds        260,000,000           250,000,000
                            Series 75, 9.875%
                            Due June 15, 2020

COMED                       First Mortgage Bonds        200,000,000           200,000,000
                            Series 81, 8.625%
                            Due February 1, 2022

COMED                       First Mortgage Bonds        200,000,000           200,000,000
                            Series 84, 8.500%
                            Due July 15, 2022

COMED                       First Mortgage Bonds        200,000,000           200,000,000
                            Series 86, 8.375%
                            Due September 15, 2022

COMED                       First Mortgage Bonds        250,000,000           235,950,000
                            Series 88, 8.375%
                            Due February 15, 2023

COMED                       First Mortgage Bonds        160,000,000           160,000,000
                            Series 91, 8.000%
                            Due April 15, 2023

COMED                       First Mortgage Bonds        150,000,000           150,000,000
                            Series 97, 7.750%
                            Due July 15, 2023

COMED                       Sinking Fund Debentures      49,000,000             1,000,000
                            2.875%
                            Due April 1, 2001

COMED                       Sinking Fund Debentures      50,000,000             4,925,000
                            3.125%
                            Due October 1, 2004

COMED                       Sinking Fund Debentures      50,000,000             8,000,000
                            3.875%
                            Due January 1, 2008

COMED                       Sinking Fund Debentures      20,000,000             3,568,000
                            4.625%
                            Due January 1, 2009

COMED                       Sinking Fund Debentures      40,000,000             9,181,000
                            4.750%
                            Due December 1, 2011

COMED                       Subordinated Deferrable     206,190,000           206,190,000
                            Interest Notes
                            8.480%
                            Due September 30, 2035

COMED                       Subordinated Deferrable     154,640,000           154,640,000
                            Interest Debentures
                            8.500%
                            Due January 15, 2027



--------------------------------------------------------------------------------
                                                                        Page 5



COMED TRANSITIONAL          Transitional Funding        425,032,687           170,000,000
FUNDING TRUST               Trust Notes
                            Class A-2
                            Series 1998, 5.290%
                            Due June 25, 2001

COMED TRANSITIONAL          Transitional Funding        258,860,915           258,860,915
FUNDING TRUST               Trust Notes
                            Class A-3
                            Series 1998, 5.340%
                            Due March 25, 2002

COMED TRANSITIONAL          Transitional Funding        421,139,085           421,139,085
FUNDING TRUST               Trust Notes
                            Class A-4
                            Series 1998, 5.390%
                            Due June 25, 2003

COMED TRANSITIONAL          Transitional Funding        598,510,714           598,510,714
FUNDING TRUST               Trust Notes
                            Class A-5
                            Series 1998, 5.440%
                            Due March 25, 2005

COMED TRANSITIONAL          Transitional Funding        761,498,286           761,498,286
FUNDING TRUST               Trust Notes
                            Class A-6
                            Series 1998, 5.630%
                            Due June 25, 2007

COMED TRANSITIONAL          Transitional Funding        510,000,000           510,000,000
FUNDING TRUST               Trust Notes
                            Class A-7
                            Series 1998, 5.740%
                            Due December 25, 2008

COMED                       Pollution Control            50,000,000            45,500,000
                            Obligation Illinois
                            Industrial Pollution
                            Control Finance Authority
                            5.875%
                            Due May 15, 2007

COMED                       Pollution Control            50,000,000            50,000,000
                            Obligation
                            Illinois Development
                            Finance Authority
                            Series 1994C, Variable
                            Due March 1, 2009

COMED                       Pollution Control            42,200,000            42,200,000
                            Obligation
                            Illinois Development
                            Finance Authority
                            Series 1994B, Variable
                            Due October 15, 2014

COMED                       Medium Term Notes            25,000,000            25,000,000
                            Series 3N-3037, 9.170%
                            Due October 15, 2002

COMED                       Medium Term Notes             2,000,000             2,000,000
                            Series 3N-3038, 9.170%
                            Due October 15, 2002

COMED                       Medium Term Notes            25,000,000            25,000,000
                            Series 3N-3039, 9.170%
                            Due October 15, 2002

COMED                       Medium Term Notes            23,000,000            23,000,000
                            Series 3N-3040, 9.170%
                            Due October 15, 2002


--------------------------------------------------------------------------------
                                                                        Page 6





COMED                       Medium Term Notes            25,000,000            25,000,000
                            Series 3N-3041, 9.170%
                            Due October 15, 2002

COMED                       Medium Term Notes            14,000,000            14,000,000
                            Series 3N-3032, 9.200%
                            Due October 15, 2004

COMED                       Medium Term Notes            14,000,000            14,000,000
                            Series 3N-3033, 9.200%
                            Due October 15, 2004

COMED                       Medium Term Notes            10,000,000            10,000,000
                            Series 3N-3034, 9.200%
                            Due October 15, 2004

COMED                       Medium Term Notes            14,000,000            14,000,000
                            Series 3N-3035, 9.200%
                            Due October 15, 2004

COMED                       Medium Term Notes             4,000,000             4,000,000
                            Series 3N-3036, 9.200%
                            Due October 15, 2004

COMED                       Medium Term Notes           200,000,000           200,000,000
                            7.158%
                            Due September 30, 2002

COMED                       Medium Term Notes           250,000,000           250,000,000
                            7.284%
                            Due September 30, 2003

COMED                       Note, 6.400%                235,000,000           235,000,000
                            Due October 15, 2005

COMED                       Note, 7.375%                150,000,000           150,000,000
                            Due January 15, 2004

COMED                       Note, 7.625%                150,000,000           150,000,000
                            Due January 15, 2007

COMED                       Note, 6.950%                225,000,000           225,000,000
                            Due July 15, 2018

COMED                       Purchase Contract             1,430,000               254,174
                            Obligation, 3.000%
                            Due April 30, 2005

PETT                        Transition Bonds            244,470,272            81,970,272
                            1999 Series A-1, 5.4800%
                            Due March 1, 2001

PETT                        Transition Bonds            275,371,325           275,371,325
                            1999 Series A-2, 5.6300%
                            Due March 1, 2003

PETT                        Transition Bonds            667,000,000           667,000,000
                            1999 Series A-3
                            LIBOR + 0.125%
                            Due March 1, 2004

PETT                        Transition Bonds            458,518,647           458,518,647
                            1999 Series A-4, 5.8000%
                            Due March 1, 2005

PETT                        Transition Bonds            464,600,000           464,600,000
                            1999 Series A-5
                            LIBOR + 0.200%
                            Due September 1, 2007

PETT                        Transition Bonds            993,386,331           993,386,331
                            1999 Series A-6, 6.0500%
                            Due March 1, 2007


--------------------------------------------------------------------------------
                                                                        Page 7





PETT                        Transition Bonds            896,653,425           896,653,425
                            1999 Series A-7, 6.1300%
                            Due September 1, 2008

PETT                        Transition Bonds            110,000,000           110,000,000
                            2000 Series A-1, 7.1800%
                            Due September 1, 2001

PETT                        Transition Bonds            140,000,000           140,000,000
                            2000 Series A-2, 7.3000%
                            Due September 1, 2002

PETT                        Transition Bonds            398,838,452           398,838,452
                            2000 Series A-3, 7.6250%
                            Due March 1, 2009

PETT                        Transition Bonds            351,161,548           351,161,548
                            2000 Series A-4, 7.6500%
                            Due September 1, 2009

PECO                        First Mortgage Bonds        250,000,000           250,000,000
                            5.625% Series,
                            Due November 1, 2001

PECO                        First Mortgage Bonds         75,000,000            75,000,000
                            6.375% Series,
                            Due August 15, 2005

PECO                        First Mortgage Bonds        200,000,000           200,000,000
                            6.50% Series,
                            Due May 1, 2003

PECO                        First Mortgage Bonds        250,000,000           250,000,000
                            6.625% Series,
                            Due March 1, 2003

PECO                        First Mortgage Bonds        175,000,000           175,000,000
                            7.125% Series,
                            Due September 1, 2002

PECO                        First Mortgage Bonds        100,000,000             5,280,000
                            7.50% Series,
                            Due July 15, 2002

PECO                        First Mortgage Bonds        200,000,000            41,636,000
                            8.00% Series,
                            Due April 1, 2002

PECO                        First Mortgage Bonds         50,000,000            50,000,000
                            Pollution Control
                            Delaware County
                            Series 1988-A, 4.1567%
                            Due December 1, 2012

PECO                        First Mortgage Bonds         50,000,000            50,000,000
                            Pollution Control
                            Delaware County
                            Series 1988-B, 4.1996%
                            Due December 1, 2012

PECO                        First Mortgage Bonds         50,000,000            50,000,000
                            Pollution Control
                            Delaware County
                            Series 1988-C, 4.2007%
                            Due December 1, 2012

PECO                        First Mortgage Bonds          4,200,000             4,200,000
                            Pollution Control
                            Salem County
                            Series 1988-A, 4.0738%
                            Due December 1, 2012


--------------------------------------------------------------------------------
                                                                        Page 8





PECO                        First Mortgage Bonds         29,540,000            29,530,000
                            Pollution Control
                            Montgomery County
                            Series 1992-A, 6.6250%
                            Due June 1, 2022

PECO                        First Mortgage Bonds        160,560,000            68,795,000
                            Pollution Control
                            Montgomery County
                            Series 1991-B, 6.7000%
                            Due December 1, 2021

PECO                        First Mortgage Bonds         90,000,000            39,235,000 (A)
                            Pollution Control
                            Delaware County
                            Series 1991-A, 7.3750%
                            Due April 1, 2021

PECO                        First Mortgage Bonds         27,030,000            13,150,000 (A)
                            Pollution Control
                            Montgomery County
                            Series 1991-A, 7.6000%
                            Due April 1, 2021

PECO                        Pollution Control Notes      17,240,000            17,240,000
                            Indiana County
                            Series 1997-A, 4.4100%
                            Due June 1, 2027

PECO                        Pollution Control Notes      50,765,000            50,765,000
                            Delaware County
                            Series 1999-A, 5.2000%
                            Due October 1, 2021

PECO                        Pollution Control Notes      91,775,000            91,775,000
                            Montgomery County
                            Series 1999-A, 5.2000%
                            Due October 1, 2030

PECO                        Pollution Control Notes      13,880,000            13,880,000
                            Montgomery County
                            Series 1999-B, 5.3000%
                            Due October 1, 2034



(A) In April  2001,  this  series  was  refinanced  and  transferred  to  Exelon
Generation.


                                  CAPITAL STOCK

(b)  For each  class of  capital  stock  including  certificates  of  beneficial
     interest give  information in number of shares and in dollar  amounts:  (Do
     not include here any warrants,  options, or other securities reported under
     paragraph 8(d).)


--------------------------------------------------------------------------------
                                                                        Page 9


                  BY PERMISSION OF THE STAFF OF THE COMMISSION,
                     COLUMNS G THROUGH J HAVE BEEN OMITTED.




                                                            TITLE OF               AMOUNT            AMOUNT           AMOUNT
         ISSUER NAME                                         ISSUE               AUTHORIZED         UN-ISSUED         ISSUED
-----------------------------------------------------------------------------------------------------------------------------------
                                                                                                      
Exelon Energy Delivery Company, LLC
Commonwealth Edison Company                                 Com. Stk.           250,000,000                 -      163,796,961
Commonwealth Edison Company of Indiana, Inc.                Com. Stk.             1,500,000           391,916        1,108,084
ComEd Financing I                                                   -                     -                 -                -
ComEd Financing II                                                  -                     -                 -                -
ComEd Funding, LLC                                                  -                     -                 -                -
ComEd Transitional Funding Trust                                    -                     -                 -                -
Commonwealth Research Corporation                           Com. Stk.                 1,000               800              200
Edison Development Company                                  Com. Stk.                10,000             9,259              741
Edison Development Canada Inc.                              Prf. Stk.             Unlimited               n/a            2,600
Edison Finance Partnership                                          -                     -                 -                -
PECO Energy Company                                         Com. Stk.           500,000,000                 -      170,478,507
                                                            Series Prf. Stk.    100,000,000                 -                -
                                                            Cum. Prf. Stk.       15,000,000                 -        1,745,250
PECO Energy Capital Corp.                                   Com. Stk.                 1,000             1,000                -
PECO Energy Capital, LP                                             -                     -                 -                -
PECO Energy Capital Trust II                                        -                     -                 -                -
PECO Energy Captial Trust III                                       -                     -                 -                -
PECO Energy Transition Trust                                        -                     -                 -                -
ExTel, LLC                                                          -                     -                 -                -
PECO Finance                                                        -                     -                 -                -
ATNP Finance Company                                                -                     -                 -                -
PEC Financial Services, LLC                                         -                     -                 -                -
Adwin Realty Company                                        Com. Stk.                 1,000                 -            1,000
Ambassador II Joint Venture                                         -                     -                 -                -
Bradford Associates                                                 -                     -                 -                -
Franklin Town Towers Associates                                     -                     -                 -                -
Henderson Ambassador Associates                                     -                     -                 -                -
Riverwatch                                                          -                     -                 -                -
Route 724                                                           -                     -                 -                -
Signa                                                               -                     -                 -                -
 East Coast Natural Gas Cooperative, LLP                            -                     -                 -                -
Horizon Energy Company                                      Com. Stk.                 1,000                 -            1,000







                             CONTINGENT LIABILITIES

(c)  A brief  outline of the nature and amount of each  contingent  liability on
     account of endorsement or other guarantees of any securities.

                             AS OF DECEMBER 31, 2000


            Information  regarding  contingent   liabilities  of  Exelon  Energy
       Delivery  can be found in the  following  documents:  Footnote  18 of the
       Annual Report of Exelon on Form 10-K for the year ended December 31, 2000
       (File No.  1-16169),  Footnote  16 of the Annual  Report of  Commonwealth
       Edison  Company on Form 10-K for the year ended  December  31, 2000 (File
       No. 1-1839),  and Footnote 18 of the Annual Report of PECO Energy Company
       on Form 10-K for the year ended December 31, 2000 (File No. 1-1401).



--------------------------------------------------------------------------------
                                                                        Page 10



                                OTHER SECURITIES

(d)    A  statement  of the amount of  warrants,  rights,  or options and of any
       class of  securities  of the  registrant  and  subsidiary  companies  not
       elsewhere  herein  described which is outstanding  and/or  authorized.  A
       brief   description  of  the  provisions   thereof  should  be  included.
       Information  need not be set forth  under this item as to notes,  drafts,
       bills of  exchange  or  bankers'  acceptances  which  mature  within nine
       months.

            There  are no  warrants,  rights,  or  options,  outstanding  and/or
       authorized not elsewhere herein described for Exelon Energy Delivery.  As
       to other securities of the parent corporation,  Exelon,  information with
       respect to Exelon's  1989 Long Term  Incentive  Plan is set forth in Post
       Effective Amendment No. 1 (on Form S-8) to Exelon's Form S-4 Registration
       Statement No.  333-37082  (filed  November 13, 2000) and in Exelon's Form
       S-8  Registration  Statement No.  333-49780.  Information with respect to
       PECO Energy  Company's  1998 Stock Option Plan and its  Employee  Savings
       Plan is set  forth in Post  Effective  Amendment  No. 1 (on Form  S-8) to
       Exelon's Form S-4  Registration  Statement No.  333-37082 (filed November
       13, 2000).  Information  with respect to PECO Energy  Company's  Deferred
       Compensation  and  Supplemental  Pension Plan,  Management Group Deferred
       Compensation   and   Supplemental   Pension   Plan,   Unfunded   Deferred
       Compensation  Plan for Directors,  and Employee  Savings Plan, as well as
       Unicom  Amended and Restated  Long-Term  Incentive  Plan, the Unicom 1996
       Directors' Fee Plan, the Unicom  Retirement  Plan for Directors,  and the
       Commonwealth  Edison  Retirement Plan for Directors and the  Commonwealth
       Edison Employee Savings and Investment Plan is set forth in Exelon's Form
       S-8 Registration Statement No. 333-49780.


                        INVESTMENTS IN SYSTEM SECURITIES

9.   Give a tabulation  showing principal amount,  par or stated value, the cost
     to the system company originally acquiring such security, and the number of
     shares or units,  of each security  described  under Item 8 that is held by
     the registrant  and by each  subsidiary  company  thereof as the record (or
     beneficial)  owner,  and the  amount at which the same are  carried  on the
     books of each such owner.  This information  should be given as of the same
     date as the information furnished in Item 8.


                                    As of December 31, 2000




Name of Company                                            Number of Common   % Voting Power  Issuer Book
                                                           Shares Owned                       Value ($000)
----------------------------------------------------------------------------------------------------------
                                                                                   
Exelon Energy Delivery Company, LLC                                                100.00%
   Commonwealth Edison Company                                   163,796,961        < 100%  5,691,907
     Commonwealth Edison Company of
Indiana,                                                           1,108,084       100.00%     30,918
Inc.
     ComEd Financing I                                                             100.00%     15,631

     ComEd Financing II                                                            100.00%     14,515

     ComEd Funding, LLC                                                            100.00%     86,536

       ComEd Transitional Funding Trust                                            100.00%  N/A

     Commonwealth Research Corporation                                   200       100.00%        200

     Edison Development Company                                          741       100.00%     16,586

     Edison Development Canada Inc.                                    2,600       100.00%      5,499

       Edison Finance Partnership                                                  100.00%  N/A




--------------------------------------------------------------------------------
                                                                        Page 11



   PECO Energy Company                                           170,478,507       100.00%     172,918
     PECO Energy Capital Corp.                                                     100.00%      17,640
       PECO Energy Capital, LP                                                       3.00%      13,968
       PECO Energy Capital Trust II                                                100.00%  N/A
       PECO Energy Captial Trust III                                               100.00%  N/A
     PECO Energy Transition Trust                                                  100.00%     149,901
     ExTel, LLC                                                                    100.00%    (229,504)
       PECO Finance                                                              99% PECO;    (227,208)
                                                                                  1% Extel      (2,295)
         ATNP Finance Company                                                      100.00%   4,324,366
         PEC Financial Services, LLC                                               100.00%      12,918
     Adwin Realty Company                                              1,000       100.00%      22,628
       Ambassador II Joint Venture                                                  50.00%  N/A
       Bradford Associates                                                          50.00%  N/A
       Franklin Town Towers Associates                                              50.00%  N/A
       Henderson Ambassador Associates                                              50.00%  N/A
       Riverwatch                                                                  100.00%  N/A
       Route 724                                                                   100.00%  N/A
       Signa                                                                       100.00%  N/A
     East Coast Natural Gas Cooperative, LLP                                        41.12%         360
     Horizon Energy Company                                            1,000       100.00%  N/A



     N/A Not applicable or Not Available

                         INVESTMENTS IN OTHER COMPANIES

10.  Give a  tabulation  showing  all  investment  of the  registrant  and  each
     subsidiary  thereof in holding  companies and in public  utility  companies
     which are not subsidiary companies of the registrant.  Also, show all other
     investments of the registrant and each subsidiary thereof in the securities
     of any other  enterprise,  if the book value of the  investment in any such
     enterprise  exceeds 2% of the total  debit  accounts  shown on the  balance
     sheet of the company  owning  investment  or an amount in excess of $25,000
     (whichever  amount is the lesser).  Give the principal amount and number of
     shares or units and the cost of each issue of such securities to the system
     company  originally  acquiring such  security,  and the amount at which the
     same are  carried  on the  books  of the  owner.  List all such  securities
     pledged as collateral for loans or other obligations and identify loans and
     obligations for which pledged.  This information  should be given as of the
     same date as the information furnished in Item 8.



                                         As of December 31, 2000


Investor               Investee             Type               Quantity      Cost         Carrying Value
--------------------------------------------------------------------------------------------------------
                                                                           
ComEd        Chicago Equity Fund            Limited Partnership     N/A    $1,390,514      $1,390,514

ComEd        Dearborn Park Corporation      Common Shares         10,000     $537,654        $537,654

ComEd        I.L.P. Fund C/O Chicago
                 Capital Fund               Venture Capital Small    N/A     $250,000        $250,000
                                            Business Fund


N/A Not applicable


                        INDEBTEDNESS OF SYSTEM COMPANIES

11.  List each  indebtedness  of the registrant and of each  subsidiary  company
     thereof (other than indebtedness  reported under Item 8, but as of the same
     date) where the  aggregate  debt owed by any such company to any one person
     exceeds  $25,000  or an  amount  exceeding  2% of the  total  of the  debit
     accounts shown on the balance sheet of the debtor  (whichever amount is the
     lesser) but not including any case in which such aggregate  indebtedness is
     less than $5,000, and give the following additional  information as to each
     such indebtedness:


--------------------------------------------------------------------------------
                                                                        Page 12



(a)  Debts owed to associate companies as of December 31, 2000:




Name of Debtor          Name of Creditor      Amount Owed          Rate of Interest      Date of Maturity
---------------------------------------------------------------------------------------------------------

                                                                                  
PECO Wireless, LP       PEC Financial         3,491,758,856         9.95%                       N.A.

PECO Wireless, LP       PEC Financial           952,493,117        12.70%                       N.A.

PEC Financial           ATNP Finance Company  3,481,245,933         9.75%                       N.A.

PEC Financial           ATNP Finance Company    951,752,431        12.50%                       N.A.

PECO Energy Company     PECO Capital Corp.          520,833        Prime + 2pts.                N.A.

PECO Energy Company     PECO Capital Corp.          805,206        Prime + 2pts.                N.A.

PECO Energy Company     PECO Capital, LP         80,526,019         7.375%                      N.A.

PECO Energy Company     PECO Capital, LP         51,562,500         8.00%                       N.A.



(b)  Debts owed to others as of December 31, 2000:

                  BY PERMISSION OF THE STAFF OF THE COMMISSION,
                    "DEBTS OWED TO OTHERS" HAS BEEN OMITTED.


                                PRINCIPAL LEASES

12.  Describe briefly the principal features of each lease (omitting oil and gas
     leases) to which the  registrant  or any  subsidiary  company  thereof is a
     party,  which involves  rental at an annual rate of more than $50,000 or an
     amount exceeding 1% of the annual gross operating  revenue of such party to
     said  lease  during its last  fiscal  year  (whichever  of such sums is the
     lesser) but not including any lease involving rental at a rate of less than
     $5,000 per year.




                                                                         Total Payments for the
Lessee                 Lessor                     Items Leased          year ended December 2000
--------------------------------------------------------------------------------------------------------
                                                                  
ComEd                   AT&T Global Real Estate   Office Space               $6,244,984

ComEd                   400 S. Jefferson LLC      Office Space               $671,745

ComEd                   Julian Toft & Downey      Office Space               $418,441

ComEd                   Oxford Bank               Office Space               $264,979

ComEd                   Chicago Public Schools    Office Space               $722,740

ComEd                   Jones Lang LaSalle        Office Space               $2,207,907

ComEd                   Loft Development
                         Corporation              Office Space               $352,355

ComEd                   130 S. Jefferson LLC      Office Space               $360,976

ComEd                   East Lake Management
                         Corp.                    Office Space               $113,243

ComEd                   Lincoln Atrium
                         Management Corp.         Office Space               $1,796,583

ComEd                   James Morrison            Office Space               $89,981

ComEd                   Prime Realty Group Trust  Office Space               $1,454,305

ComEd                   Alter Group               Office Space               $299,090

ComEd                   Seaway National Bank      Office Space               $130,483

ComEd                   77 W. Wacker Limited
                         Partnership              Office Space               $86,637

ComEd                   20 S. Clark Owner's Group Office Space               $94,883

ComEd                   M&J Wilkow LTD            Office Space               $97,788

ComEd                   J B Prentice Management   Office Space               $77,899

ComEd                   III Industrial
                         Properties, Inc.         Office Space               $1,148,775

ComEd                   Bank of Pontiac           Office Space               $50,082

ComEd                   Austin Bank of Chicago    Office Space               $50,714


--------------------------------------------------------------------------------
                                                                        Page 13



ComEd                   James E. McElvain         Office Space               $53,845

                                                  Total                      $16,788,435
                                                                             ===========

PECO Energy Company     Verizon                   Pole Attachments           $6,000,000

PECO Energy Company     Bankers Leasing
                         Corporation              Capital Items (vehicles,   $4,200,000
                                                  computers, and equipment)
                                                  Total                      $10,200,000
                                                                             ===========

                                                  Grand Total                $26,988,435
                                                                             ===========




Note: Pursuant to the corporate restructuring, certain of ComEd's leases
      primarily relating to computer and other equipment were transferred to
      Exelon's Business Services Company.


                                 SECURITIES SOLD

13.  If, during the last five years,  the registrant or any  subsidiary  company
     thereof has issued,  sold,  or exchanged  either  publicly or privately any
     securities  having a  principal  amount,  par,  stated  or  declared  value
     exceeding  $1,000,000  or  exceeding  an  amount  equal to 10% of the total
     liabilities  as shown by the balance sheet of issuer at the time such issue
     (whichever of such sums is the lesser), give the following information with
     respect to each such issue or sale:







Issuer            Title of    Amount Issued   Proceeds       Approximate   Name of        Underwriters
                  Issue       or Sold ($000)  Received by    Expenses of   Principal      Initial
                                              Issuer per     Issuer per    Underwriters   Offering
                                              $100 (before   $100                         Price
                                              expenses)
-------------------------------------------------------------------------------------------------------
                                                                       
1996
ComEd             Pollution      $110,000       98.171%       .341%         J.P. Morgan   100%
                  Control First                                             Securities
                  Mortage Bonds                                             Inc.

                                                                            First Chicago
                                                                            Capital
                                                                            Markets Inc.

ComEd             Pollution      $89,400        98.171%       .364%         J.P. Morgan   100%
                  Control First                                             Securities
                  Mortage Bonds                                             Inc.

                                                                            First Chicago
                                                                            Capital
                                                                            Markets, Inc.

1997
ComEd             7.375% Notes   $150,000       99.184%       .89%          Salomon       99.809%
                                                                            Brothers Inc.

                                                                            Merrill Lynch
                                                                            & Co.

                                                                            Paine Webber
                                                                            Incorporated

ComEd             7.625% Notes   $150,000       99.258%       .92%          Salomon       99.908%
                                                                            Brothers Inc.

                                                                            Merrill Lynch
                                                                            & Co.

                                                                            Paine Webber
                                                                            Incorporated

ComEd             Capital        $154,640       100%          .30%          Salomon       100%
Financing II      Securities                                                Brothers Inc.

                                                                            Merrill Lynch
                                                                            & Co.

                                                                            Paine Webber
                                                                            Incorporated

PECO Energy       Pollution      $17,240        100%          N/A           Goldman Sachs N/A
                  Control Revenue                                           & Company
                  Refunding Bonds

--------------------------------------------------------------------------------
                                                                        Page 14




PECO Energy       Company        $50,000        100%          .788%         Smith Barney  100%
                  Obligated                                                 Inc.
                  Mandatorily
                  Redeemable                                                Lehman
                  Preferred                                                 Brothers
                  Securities

1998
ComEd             6.95% Notes    $225,000       98.697%       1.11%         PaineWebber   99.572%
                                                                            Inc.

                                                                            Lehman
                                                                            Brothers Inc.

                                                                            ABN AMRO Inc.

                                                                            The Bank of New
                                                                            York

                                                                            J.P. Morgan
                                                                            Securities, Inc.

                                                                            Artemis Capital
                                                                            Group,

                                                                            Blaylock &
                                                                            Partners, L.P.

ComEd TransitionalTransitional   $3,400,000    99.489%       .64%           Goldman,        99.959%
Funding Trust     Funding Trust                                             Sachs & Co.,
                  Notes
                                                                            Merrill Lynch

                                                                            Pierce, Fenner
                                                                            & Smith Inc.

                                                                            Salomon Smith
                                                                            Barney Inc.

PECO Energy       Company        $78,100        100%           1%           Salomon       100%
                  Obligated                                                 Smith Barney
                  Mandatorily
                  Redeemable                                                Merrill Lynch
                  Preferred                                                 & Co.
                  Securities

1999
PECO Energy       Transition     A-1
                  Bonds          $244,470       99.977%       .35%          Salomon       100%
                                                                            Smith Barney
                                 A-2
                                 $275,371       99.928%       .40%          Goldman,
                                                                            Sachs & Co.
                                 A-3
                                 $667,000       99.836%       .45%          Lehman
                                                                            Brothers
                                 A-4
                                 $455,519       99.868%       .45%          First Chicago
                                                                            Capital
                                                                            Markets, Inc.
                                 A-5
                                 $464,600       99.839%       .50%          First Union
                                                                            Capital
                                                                            Markets Corp.
                                 A-6
                                 $993,386       99.871%       .50%          Commerce
                                                                            Capital
                                                                            Markets Corp.
                                 A-7
                                 $896,653       99.835%       .50%          Janney
                                                                            Montgomery
                                                                            Scott, Inc.

                                                                            Pryor
                                                                            McClendon
                                                                            Counts &
                                                                            Co., Inc.

2000
ComEd             Medium Term    $200,000       99.750%       .25%          Lehman        100%
                  Notes                                                     Brothers

                                                                            Banc
                                                                            of America
                                                                            Securities, LLC


--------------------------------------------------------------------------------
                                                                        Page 15





                                                                            Banc One
                                                                            Capital Markets,
                                                                            Inc.

                                                                            Chase
                                                                            Securities, Inc.

                                                                            ABN Amro,

                                                                            BNY Capital
                                                                            Markets, Inc.

                                                                            Loop Capital
                                                                            Markets, LLC

ComEd             Medium Term    $250,000       99.650%       .35%          Lehman        100%
                  Notes                                                     Brothers

                                                                            Banc
                                                                            of America
                                                                            Securities, LLC

                                                                            Banc One
                                                                            Capital Markets,
                                                                            Inc.

                                                                            Chase
                                                                            Securities, Inc.

                                                                            ABN Amro,

                                                                            BNY Capital
                                                                            Markets, Inc.

                                                                            Loop Capital
                                                                            Markets, LLC

PECO Energy       Transition     A-1
                                 $110,000       99.99%        .20%          Salomon       100%
                                                                            Smith Barney
                                 A-2
                                 $140,000       99.90%        .30%          Goldman,
                                                                            Sachs & Co.
                                 A-3
                                 $398,838       99.751%       .50%          Banc One
                                                                            Capital
                                                                            Markets, Inc.
                                 A-4
                                 $352,161       99.772%       .50%          Banc of
                                                                            America
                                                                            Securities, LLC

                                                                            Credit Suisse
                                                                            First Boston

                                                                            First Union
                                                                            Securities, Inc.

                                                                            Barclays
                                                                            Capital

                                                                            BNY Capital
                                                                            Markets, Inc.

                                                                            Mellon
                                                                            Financial
                                                                            Markets, LLC

                                                                            Prudential
                                                                            Securities

                                                                            Janney
                                                                            Montgomery
                                                                            Scott, LLC

                                                                            Pryor, Counts
                                                                            & Co. Inc.

                                                                            TD Securities






--------------------------------------------------------------------------------
                                                                        Page 16





                AGREEMENTS FOR FUTURE DISTRIBUTION OF SECURITIES

14(a).   Summarize the terms of any existing  agreement to which the  registrant
         or any  associate or affiliate  company  thereof is a party or in which
         any such  company  has a  beneficial  interest  with  respect to future
         distributions of securities of the registrant or of any subsidiary.

                Certain information  regarding agreements with respect to future
           distributions  of  securities of Exelon and its  subsidiaries  is set
           forth in the following  documents,  the applicable  portions of which
           are hereby incorporated by reference:  Item 1.E,  subsections 1-4 and
           6-7, Item 1.H and Item 1.I of the  Financing  U-1.  Information  with
           respect to  Exelon's  1989 Long Term  Incentive  Plan is set forth in
           Post  Effective  Amendment  No. 1 (on Form S-8) to Exelon's  Form S-4
           Registration Statement No. 333-37082 (filed November 13, 2000) and in
           Exelon's Form S-8 Registration  Statement No. 333-49780.  Information
           with respect to PECO Energy  Company's 1998 Stock Option Plan and its
           Employee Savings Plan is set forth in Post Effective  Amendment No. 1
           (on  Form  S-8) to  Exelon's  Form  S-4  Registration  Statement  No.
           333-37082 (filed November 13, 2000). Information with respect to PECO
           Energy Company's Deferred Compensation and Supplemental Pension Plan,
           Management Group Deferred Compensation and Supplemental Pension Plan,
           Unfunded  Deferred  Compensation  Plan for  Directors,  and  Employee
           Savings  Plan,  as well as  Unicom  Amended  and  Restated  Long-Term
           Incentive  Plan,  the Unicom  1996  Directors'  Fee Plan,  the Unicom
           Retirement Plan for Directors, and the Commonwealth Edison Retirement
           Plan for Directors and the  Commonwealth  Edison Employee Savings and
           Investment  Plan is set  forth  in  Exelon's  Form  S-8  Registration
           Statement No. 333-49780.

14(b).  Describe  briefly the nature of any financial  interest  (other than the
        ownership of securities  acquired as a dealer for the purpose of resale)
        which any person with whom such agreement exists,  has in the registrant
        or in any associate company thereof.

               The beneficiaries of the employee benefit plans referred to above
          may be  deemed  to have a  financial  interest  in the  registrant  or
          affiliated   companies   thereof   by  virtue   of  their   employment
          relationship   with  the  registrant  or  such  other   companies  and
          compensation,   benefit  and  severance  agreements  and  arrangements
          relating to such employment.



                    TWENTY LARGEST HOLDERS OF CAPITAL STOCKS

15.  As of a  recent  date  (indicating  such  date  for  each  class)  give the
     following  information  with  respect to the holders of each class of stock
     and/or certificates of beneficial interest of the registrant:

     (a)  The twenty largest registered holders of common stock of Exelon Energy
          Delivery, as of April 23, 2001.





  Title of Issue             Holder of Record and Address    Number of Shares    Percent of Class
                                                                 Owned
---------------------------------------------------------------------------------------------------------
                                                                       
Exelon Energy Delivery       Exelon Corporation                   N/A            100% of member-
Membership interest          P.O. Box 805398                                     ship interest
                             Chicago, IL 60680-5398


     (b)  Number of  shareholders  of record each holding  1,000 shares or more,
          and aggregate number of shares so held.

     100 % of Exelon  Energy  Delivery's  membership  interest is held by Exelon
     Corporation.

     (c)  Number of  shareholders of record each holding less than 1,000 shares,
          and aggregate number of shares so held.

          N/A


--------------------------------------------------------------------------------
                                                                        Page 17





                        OFFICERS, DIRECTORS AND EMPLOYEES

16(a).   Positions and  Compensation  of Officers and  Directors.  Give name and
         address of each director and officer (including any person who performs
         similar  functions)  of the  registrant,  of  each  subsidiary  company
         thereof,  and of each mutual  service  company which is a member of the
         same holding company system.  Opposite the name of each such individual
         give the title of every such position held by him and briefly  describe
         each other employment of such individual by each such company.

         State the  present  rate of  compensation  on an annual  basis for each
         director whose aggregate  compensation  from all such companies exceeds
         $1,000 per year, and of each officer whose aggregate  compensation from
         such companies is at the rate of $20,000 or more per year. In the event
         any officer  devotes only part of his time to a company or companies in
         the system this fact should be indicated by appropriate footnote.  Such
         compensation  for such part time  should be  computed on an annual rate
         and if such annual rate exceeds $20,000 the actual compensation as well
         as annual rate should also be reported.

16(b).   Compensation  of Certain  Employees.  As to regular  employees  of such
         companies  who are not  directors or officers of any one of them,  list
         the name,  address,  and aggregate  annual rate of  compensation of all
         those who receive $20,000 or more per year from all such companies.

16(c).   Indebtedness to System Companies. As to every such director, trustee or
         officer as aforesaid,  who is indebted to any one of such companies, or
         on whose behalf any such company has now  outstanding and effective any
         obligation  to assume  or  guarantee  payment  of any  indebtedness  to
         another,  and whose  total  direct  and  contingent  liability  to such
         company  exceeds  the sum of  $1,000,  give the name of such  director,
         trustee, or officer, the name of such company, and describe briefly the
         nature and amount of such direct and contingent obligations.

16(d).   Contracts. If any such director,  trustee, or officer as aforesaid: (1)
         has an  existing  contract  with  any  such  company  (exclusive  of an
         employment  contract which provides for no compensation other than that
         set forth in paragraph (a) of this Item);  or, (2) either  individually
         or together with the members of his immediate family, owns, directly or
         indirectly,  5% or more of the voting  securities  of any third  person
         with whom any such  company has an existing  contract;  or, (3) has any
         other  beneficial  interest in an  existing  contract to which any such
         company is a party;  describe briefly the nature of such contract,  the
         names of the parties  thereto,  the terms thereof,  and the interest of
         such officer, trustee, or director therein.

         By permission of the Staff of the Commission,  information  required to
         be  disclosed  pursuant to Items 16(a)  through  16(d) is not set forth
         herein. In lieu thereof, information in respect thereof is set forth in
         (i) the Proxy  Statement  for 2001 Annual  Meeting of  Shareholders  of
         Exelon (ii) the Annual Report on Form 10-K for the year ending December
         31, 2000 for Exelon,  and such  information is hereby  incorporated  by
         reference to the extent it relates to officers, directors and employees
         of Exelon Energy Delivery or its subsidiaries.

16(e).   Banking  Connections.  If any such director,  trustee, or officer is an
         executive officer, director,  partner,  appointee, or representative of
         any bank, trust company,  investment banker, or banking  association or
         firm,  or of any  corporation  a  majority  of whose  stock  having the
         unrestricted  right to vote for the election of directors,  is owned by
         any bank, trust company,  investment banker, or banking  association or
         firm, state the name of such director or officer, describe briefly such
         other  positions  held by him and  indicate  which of the  rules  under



--------------------------------------------------------------------------------
                                                                        Page 18



         Section 17(c)  authorizes the  registrant  and subsidiary  companies of
         which he is a director or officer to retain him in such capacity.



                John W. Rowe:  Member of Board of  Directors of Unicom from 1998
                through  the merger  closing;  member of Board of  Directors  of
                ComEd from 1998;  member of Board of  Directors  of Exelon since
                the merger closing, officer of Exelon Energy Delivery and member
                of Board of  Directors  of Fleet  Boston  Financial,  commercial
                banking institution. Authorized pursuant to Rule 70(b).





                    INTERESTS OF TRUSTEES IN SYSTEM COMPANIES

17.  Describe  briefly the nature of any substantial  interest which any trustee
     under  indentures  executed in  connection  with any  outstanding  issue of
     securities of the registrant or any subsidiary  thereof,  has in either the
     registrant  or such  subsidiary,  and any claim which any such  trustee may
     have against registrant or any subsidiary; provided, however, that it shall
     not  be  necessary  to  include  in  such   description  any  evidences  of
     indebtedness  owned by such trustee  which were issued  pursuant to such an
     indenture.

            To the knowledge of Exelon Energy Delivery,  there is no substantial
       interest of any trustee under indentures  executed in connection with any
       outstanding issue of securities.



                   SERVICE, SALES, AND CONSTRUCTION CONTRACTS

18.  As to  each  service,  sales,  or  construction  contract  (as  defined  in
     paragraphs  (19) to (21) of Section  2(a) of the Act) which the  registrant
     and any subsidiary  company thereof has had in effect within the last three
     months,  describe briefly the nature of such contract, the name and address
     of the parties  thereto,  the dates of execution  and  expiration,  and the
     compensation  to be paid  thereunder.  Attach  typical  forms  of any  such
     contracts as an exhibit to this registration  statement. If the other party
     to any such contract is a mutual  service  company or a subsidiary  service
     company  which  is a member  of the  same  holding  company  system  as the
     registrant and as to which the  Commission has made a favorable  finding in
     accordance  with  Rule  13-22,  specific  reference  may  be  made  to  the
     application or declaration filed by such company pursuant to Rule 13-22 and
     no further details need be given as to such contracts.


Note:This item is intended to apply to service,  sales or construction contracts
     within  the  scope  of  Section  13.  It is not  intended  to  apply to any
     contracts for purchase of power or gas or ordinary  contracts for materials
     and supplies, printing, etc., made with non-affiliates.

     Exelon Energy Delivery and its subsidiaries may receive or provide services
pursuant to:

       1.  ComEd provides  services to or receives  services from  affiliates in
           accordance with an Affiliated Interests Agreement ("AIA") approved by
           the Illinois Commerce Commission. The form of the AIA was attached as
           Exhibit  H-1  to the  form  U5B  registration  statement  for  Exelon
           Corporation  filed on January  23,  2001.  A summary  of the  service
           provider,  recipient,  description  of the work,  the  annual  dollar
           volume, and pricing was filed as Exhibit B-3.3, Part A, to the Merger
           U-1; the exhibit was filed with  Amendment  No. 3 to such Form U-1 on
           October  18,  2000.  Included  in such  summary is a  description  of
           services  provided  to  certain  governmental  customers  of ComEd by
           affiliates of ComEd  pursuant to  pass-through  arrangements  and the
           AIA.



--------------------------------------------------------------------------------
                                                                        Page 19



       2.  PECO provides  services to or receives  services  from  affiliates in
           accordance with a Mutual Services  Agreement  ("MSA") approved by the
           Pennsylvania  Public  Utilities  Commission.  The form of the MSA was
           attached as Exhibit H-2 to the form U5B  registration  statement  for
           Exelon  Corporation  filed on  January  23,  2001.  A summary  of the
           service  provider,  recipient,  description  of the work,  the annual
           dollar volume, and pricing was filed as Exhibit B-3.3, Part A, to the
           Merger U-1; the exhibit was filed with  Amendment  No. 3 to such Form
           U-1 on October 18, 2000.

       3.  Exelon Business  Services  Company is the service company  subsidiary
           for the Exelon  system  and  provides  Exelon,  PECO,  ComEd,  Exelon
           Ventures,  and Exelon  Generation  with a variety of  services.  Such
           services  are  provided  pursuant  to the  terms  of the  form of the
           General  Services  Agreement,  which was filed as Exhibit  H-3 to the
           form U5B  registration  statement  for  Exelon  Corporation  filed on
           January 23, 2001.

       4.  Certain  affiliates  of ComEd and PECO  provide  services to ComEd or
           PECO, or both, other than "at-cost",  as discussed in Item 3.C.4.c of
           the Merger  U-1. A list and summary of such  transactions,  contracts
           and  arrangements  was filed as Exhibit B-3.3,  Part B, to the Merger
           U-1; the exhibit was filed with  Amendment  No. 3 to such Form U-1 on
           October 18, 2000. Copies of affiliate arrangements for Services other
           than at cost were  provided  to the Staff in paper form on  September
           18, 2000.  Copies of additional  affiliate  arrangements for services
           other  than at cost  have been  filed  confidentially  with  Exelon's
           quarterly reports on form U-9C-3.  Additional copies will be provided
           on request.  Additional information describing the business of Exelon
           Infrastructure  Services was filed confidentially with the Commission
           as Exhibit N-1 to the Merger U-1.




                                   LITIGATION

19.  Describe briefly any existing litigation of the following descriptions,  to
     which the registrant or any subsidiary  company  thereof is a party,  or of
     which the property of the registrant or any such subsidiary  company is the
     subject,  including  the names of the  parties  and the court in which such
     litigation is pending:

     (1)  Proceedings  to enforce or to restrain  enforcement  of any order of a
          State commission or other governmental agency;

     (2)  Proceedings involving any franchise claimed by any such company;

     (3)  Proceedings  between any such company and any holder,  in his capacity
          as such,  of any funded  indebtedness  or  capital  stock  issued,  or
          guaranteed  by such  company,  or  between  any such  company  and any
          officer thereof;

     (4)  Proceedings in which any such company sues in its capacity as owner of
          capital stock or funded indebtedness issued or guaranteed by any other
          company; and

     (5)  Each other proceeding in which the matter in controversy, exclusive of
          interest  and  costs,  exceeds  an  amount  equal  to 2% of the  debit
          accounts shown on the most recent balance sheet of such company.

                   Information  regarding  litigation  involving  Exelon  Energy
              Delivery and its subsidiary companies is incorporated by reference
              to Item 3 of the Annual Report of Exelon  Corporation on Form 10-K
              for the year ended December 31, 2000(File No.  1-16169),  and Part
              II Item 1 of the quarterly  reports of Exelon  Corporation on form
              10-Q for the quarters ended March 31, and June 30, 2001.





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                                                                        Page 20





                                    EXHIBITS

EXHIBIT A.        Furnish a corporate  chart showing  graphically  relationships
                  existing  between the registrant and all subsidiary  companies
                  thereof as of the same date as the  information  furnished  in
                  the answer to Item 8. The chart should show the  percentage of
                  each class voting  securities of each subsidiary  owned by the
                  registrant and by each subsidiary company.

                           A Corporate chart of Exelon,  including Exelon Energy
                           Delivery is being  provided under cover of Form SE as
                           Exhibit A-1.


EXHIBIT B.        With respect to the registrant and each  subsidiary  company
                  thereof,  furnish  a  copy  of  the  charter,   articles  of
                  incorporation,  trust agreement,  voting trust agreement, or
                  other  fundamental  document of organization,  and a copy of
                  its bylaws,  rules,  and regulations,  or other  instruments
                  corresponding  thereto.  If such  documents do not set forth
                  fully  the  rights,  priorities,    and  preferences  of the
                  holders  of each  class of capital  stock  described  in the
                  answer  to  Item  8(b)  and  those  of  the  holders  of any
                  warrants,  options  or  other  securities  described  in the
                  answer to Item 8(d), and of any  limitations on such rights,
                  there  shall also be  included  a copy of each  certificate,
                  resolution,  or other document establishing or defining such
                  rights and  limitations.  Each such document shall be in the
                  amended   form   effective   at  the  date  of  filing   the
                  registration  statement or shall be accompanied by copies of
                  any amendments to it then in effect.

                       By permission of the Staff of the Commission,  in lieu of
                  the exhibits required hereunder,  the disclosure  requirements
                  for  Exhibit  B  have  been   limited  to  (i)  the  state  of
                  incorporation  for Exelon Energy  Delivery and its  subsidiary
                  companies;  (ii)  a  brief  description  of  every  subsidiary
                  company  of  Exelon  Energy   Delivery;   and  (iii)  a  brief
                  description  of every  subsidiary  company  of  Exelon  Energy
                  Delivery including a statement as to whether each such company
                  is active or inactive.  Such information is set forth in Items
                  4 and 5 hereof.

EXHIBIT C.(a)     With  respect  to each  class of  funded  debt  shown in the
                  answers  to  Items  8(a)  and  8(c),  submit  a copy  of the
                  indenture or other fundamental  document defining the rights
                  of the holders of such security, and a copy of each contract
                  or  other   instrument   evidencing  the  liability  of  the
                  registrant  or a subsidiary  company  thereof as endorser or
                  guarantor of such security. Include a copy of each amendment
                  of  such  document  and  of  each  supplemental   agreement,
                  executed  in  connection  therewith.  If there have been any
                  changes  of  trustees  thereunder,   such  changes,   unless
                  otherwise  shown,  should  be  indicated  by  notes  on  the
                  appropriate  documents.  No such indenture or other document
                  need be filed in connection with any such issue if the total
                  amount  of  securities  that  are  now,  or may at any  time
                  hereafter,  be issued and  outstanding  thereunder  does not
                  exceed  either  $1,000,000  or an amount equal to 10% of the
                  total of the debit accounts shown on the most recent balance
                  sheet of the  registrant or subsidiary  company which issued
                  or  guaranteed  such  securities  or which  is the  owner of
                  property subject to the lien of such  securities,  whichever
                  of said sums is the lesser.

                      OMITTED BY PERMISSION OF THE STAFF OF THE COMMISSION.


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                                                                        Page 21




          (b)     As to each  outstanding and uncompleted  contract or agreement
                  entered into by registrant or any subsidiary  company  thereof
                  relating to the acquisition of any securities,  utility assets
                  (as  defined in  section  2(a)(18)  of the Act),  or any other
                  interest in any  business,  submit a copy of such  contract or
                  agreement   and   submit   details   of   any    supplementary
                  understandings or arrangements that will assist in securing an
                  understanding of such transactions.

                      OMITTED BY PERMISSION OF THE STAFF OF THE COMMISSION.

EXHIBIT D.        A  consolidating  statement  of  income  and  surplus  of  the
                  registrant  and its  subsidiary  companies for its last fiscal
                  year  ending  prior to the date of  filing  this  registration
                  statement,  together with a consolidating balance sheet of the
                  registrant  and its  subsidiary  companies  as of the close of
                  such fiscal year.

                      Exelon Energy  Delivery  commenced  operations in 2001 and
                      accordingly  have no financial  statements  for 2000.  The
                      Consolidating   Financial  Statements  for  Exelon  Energy
                      Delivery for 2001 will be filed in the U5S in 2002.

EXHIBIT E.        For each public utility  company and natural gas producing and
                  pipe  line  property  in the  holding  company  system  of the
                  registrant,   furnish  the  following   maps   (properties  of
                  associate  companies  operating in  contiguous or nearby areas
                  may be shown on the same map,  provided  property  and service
                  areas of each company are shown distinctively).

(1)  Map showing service area in which electric service is furnished, indicating
     the names of the companies serving contiguous areas.

(2)  Electric  system map showing  location of electric  property  (exclusive of
     local  distribution  lines)  owned  and/or  operated,  and  information  as
     follows:

     (a)  Generating plants -- kind and capacity;

     (b)  Transmission lines -- voltage,  number of circuits,  kind of supports,
          kind and size of conductors;

     (c)  Transmission substations -- capacity;

     (d)  Distribution substation -- capacity; and

     (e)  Points of  interconnection  with all other electric utility  companies
          and  with  all  electrical   enterprises   operated  by  municipal  or
          governmental agencies, giving names of such companies and enterprises.

(3)  Map showing service area in which gas service is furnished,  indicating the
     names of companies serving contiguous areas; and

(4)  Gas system map showing location of gas property  (exclusive of low pressure
     local  distribution  lines)  owned  and/or  operated,  and  information  as
     follows:

     (a)  Generating plants -- kind and daily capacity;
     (b)  Holders -- kind and capacity;
     (c)  Compressor stations -- capacity in horsepower;
     (d)  Transmission  pipe  lines -- size,  approximate  average  transmission
          pressure and the estimated daily delivery capacity of the system;
     (e)  Points  of  interconnection  with all other  private  and  public  gas
          utilities, pipe lines, or producing enterprises;  giving names of such
          companies and other enterprises; and



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                                                                        Page 22



     (f)  General  location and outline of gas  producing  and reserve areas and
          diagrammatic location of gathering lines.

           The maps  required by this  exhibit were filed under cover of Form SE
           with the U5B for Exelon Corporation on January 23, 2001.

EXHIBIT F.        Furnish an accurate  copy of each  annual  report for the last
                  fiscal  year  ending  prior to the date of the  filing of this
                  registration   statement,   which  the   registrant  and  each
                  subsidiary  company  thereof has  previously  submitted to its
                  stockholders. For companies for which no reports are submitted
                  the reason for omission  should be  indicated;  provided  that
                  electronic  filers  shall  submit such reports in paper format
                  only under cover of Form SE.

                  Exelon Energy  Delivery is wholly owned by Exelon  Corporation
                  and  accordingly   does  not  submit  annual  reports  to  its
                  stockholders.

EXHIBIT G.        Furnish a copy of each annual report that the registrant and
                  each public utility  subsidiary  company  thereof shall have
                  filed  with any  State  Commission  having  jurisdiction  to
                  regulate  public utility  companies for the last fiscal year
                  ending  prior  to  the  date  of  filing  this  registration
                  statement.  If any such  company  shall have  filed  similar
                  reports  with  more  than one  such  State  commission,  the
                  registrant  need  file a copy  of only  one of such  reports
                  provided  that  notation  is made of such  fact,  giving the
                  names of the  different  commissions  with which such report
                  was filed,  and setting  forth any  differences  between the
                  copy   submitted  and  the  copies  filed  with  such  other
                  commissions.  In the event  any  company  submits  an annual
                  report to the Federal  Power  Commission  but not to a State
                  commission,  a copy of such report should be  furnished.  In
                  the case of a registrant  or any public  utility  subsidiary
                  company for which no report is appended the reasons for such
                  omission  should  be  indicated  such  as "No  such  reports
                  required or filed;"  provided that  electronic  filers shall
                  submit such reports in paper format only under cover of Form
                  SE.

                  1.  2000  Annual  Report  of ComEd on FERC  Form 1 to the FERC
                  (filed herewith as Exhibit G-1 on Form SE).

                  2. 2000  Annual  Report of ComEd of  Indiana on FERC Form 1 to
                  the FERC (filed herewith as Exhibit G-2 on Form SE).

                  3.  2000  Annual  Report  of SECO on FERC  Form 1 to the  FERC
                  (filed herewith as Exhibit G-3 on Form SE).

                  4.  2000  Annual  Report  of PECO on FERC  Form 1 to the  FERC
                  (filed herewith as Exhibit G-4 on Form SE).

EXHIBIT H.        Typical forms of service,  sales, or construction  contracts
                  described in answer to Item 18.

                  1. The forms of the AIA,  MSA and  General  Service  Agreement
                  were filed with form U5B for Exelon Corporation on January 23,
                  2001.

                  2. Copies of Affiliate Arrangements for Services Other than at
                  Cost were provided to the Staff in paper form on September 18,
                  2000. Copies of additional affiliate arrangements for services
                  other  than  at  cost  have  been  filed  confidentially  with
                  Exelon's quarterly reports on form U-9C-3.

This registration statement is comprised of:


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                                                                        Page 23



     (a)  Pages numbered 1 to 24 consecutively.

     (b)  The following  Exhibits:  the Exhibits  shown on the attached  exhibit
          index.







                                    SIGNATURE

         Pursuant to the  requirements of the Public Utility Holding Company Act
of 1935, the registrant has caused this registration statement to be duly signed
on its behalf in the City of  Chicago  and State of  Illinois  on the 4th day of
September, 2001.

                                               EXELON CORPORATION

                                               By:  /s/ Randall E. Mehrberg
                                                   --------------------
                                               Name:  Randall E. Mehrberg
                                               Title: Senior Vice President and
                                               General Counsel



Attest:

 /s/ Scott N. Peters
-------------------------------------
     Assistant Secretary





                                  VERIFICATION

State of Illinois
County of Cook

The undersigned  being duly sworn deposes and says that he has duly executed the
attached  registration  statement  dated  September 4, 2001 for and on behalf of
Exelon Corporation;  that he is the Senior Vice President and General Counsel of
such company;  and that all action taken by stockholders,  directors,  and other
bodies  necessary to authorize  deponent to execute and file such instrument has
been taken.  Deponent  further says that he is familiar with such instrument and
the contents thereof,  and that the facts therein set forth are true to the best
of his knowledge, information and belief.

                                                      /s/ Randall E. Mehrberg
                                                      --------------------



Subscribed and sworn to before me, a notary public
this 4th day of September, 2001

 /s/ Mary L. Kwilos
------------------
My commission expires October 26, 2001



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                                                                        Page 24





                                INDEX OF EXHIBITS

EXHIBIT NO.       DESCRIPTION

          A-1       Organization  chart  for  Exelon,  including  Exelon  Energy
                    Delivery (filed herewith on Form SE)

          G-1       2000 Annual Report of ComEd to the FERC (FERC Form 1) (filed
                    herewith on Form SE).

          G-2       2000  Annual  Report of ComEd of  Indiana  to the FERC (FERC
                    Form 1) (filed herewith on Form SE).

          G-3       2000 Annual Report of SECO to the  FERC(FERC  Form 1) (filed
                    herewith on Form SE).

          G-4       2000 Annual  Report of PECO to the FERC (FERC Form 1) (filed
                    herewith on Form SE).