Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

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


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

Public Utility Holding Company Act of 1935 (PUHCA)

     Exelon  Corporation,  a Pennsylvania  corporation  and  registered  holding
company  (Exelon),  hereby  submits the following  Certificate  of  Notification
pursuant  to Rule  24.  This  filing  is made  pursuant  to  Exelon's  Form  U-1
Application-Declaration, as amended (the "Financing U-1") and the Securities and
Exchange  Commission's  orders dated November 2, 2000 and December 8, 2000. This
certificate  reports activity in File No. 70-9693 for the period January 1, 2001
through March 31, 2001. Any capitalized terms used herein but not defined herein
have the  respective  meanings  given in the Financing  U-1 or the  Commission's
Orders.

1.   As determined  pursuant to the December 8, 2000 Order, the Modified Rule 53
     Test  applicable  to  Exelon's  investments  in EWGs and FUCOs is  $4,000.0
     million. At March 31, 2001, Exelon's "aggregate  investment" (as defined in
     rule  53(a)  under  PUHCA) in all EWGs and FUCOs was  approximately  $770.0
     million, and accordingly,  at March 31, 2001, Exelon's remaining investment
     capacity  under  the  Modified  Rule 53  Test  was  approximately  $3,230.0
     million. At March 31, 2001, Exelon's  "consolidated  retained earnings" (as
     defined in rule 53(a) under the PUHCA) was approximately $570.0 million.

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

3.   At March 31, 2001,  Exelon's  consolidated  capitalization  ratio was: debt
     65%,  common equity 32%, and preferred  securities of  subsidiaries  of 3%.
     (For  these  purposes,   "consolidated  debt"  means  all  long-term  debt,
     long-term  debt due within one year,  notes  payable  and other  short-term
     obligations,  including  any  short-term  debt  and  non-recourse  debt  of
     EWG/FUCO  Projects,  to the extent normally  consolidated  under applicable
     financial reporting rules).

4.   At March 31, 2001, the  market-to-book  ratio of Exelon's  common stock was
     2.86.

5.   In the first quarter of 2001,  Exelon did not invest or commit to invest in
     an EWG or FUCO that would count against the Modified Rule 53 Test.

6.   Pursuant  to a request  for  confidential  treatment  under rule  104(b) of
     PUHCA,  Exelon is concurrently filing in paper format as Exhibit A, certain
     information  concerning  aggregate  investment  by EWG and FUCO Project and
     related growth in retained earnings.

7.   Pursuant  to a request  for  confidential  treatment  under rule  104(b) of
     PUHCA,  Exelon is concurrently filing in paper format as Exhibit A, certain
     information concerning aggregate investment by EWG/FUCO Project, net income
     and revenues of Exelon's EWG and FUCO Projects.

8.   Sale of any Common Stock or Preferred  Securities  issued by Exelon  during
     the first quarter of 2001,  and the purchase price per share and the market
     price per share at the date of the agreement of sale.

          During  the  first  quarter  of 2001,  1,082,019  stock  options  were
          exercised and shares were issued under various  employee  compensation
          plans with a price  range of $57.01 to $68.10 per share.  The  average
          price for the period was $64.56.

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

Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

          During  that  period,  466,600  shares  were also  issued  to  certain
          officers as part of their compensation at $67.88 per share.

9.   Options issued or issuable during quarter.

          Exelon  granted  539,700 stock options in the first quarter of 2001 at
          exercise prices ranging from $58.70 to $67.90 per share.

10.  Exelon did not  transfer any common  stock to a seller of  securities  of a
     company being acquired during the first quarter of 2001.

11.  Guarantees issued.

     The following guarantees were issued during the first quarter of 2001:



       Name of Parent
          Purpose          Name of Subsidiary                 Amount                 Terms
          -------          ------------------                 ------                 -----

                                                                           
       Exelon              Exelon Enterprises               $ 95,180,872            12 Months
       Insurance Support

       Exelon              Exelon Generation Company        $ 91,000,000            12 Months
       Decommissioning

       Exelon              Exelon Generation Company        $ 22,189,127            12 Months
       Credit Support

       Exelon              Exelon Generation Company        $    899,000            12 Months
       Closure / Post-closure Care

       Exelon              AmerGen Energy Company           $    133,000            12 Months
       Closure / Post-closure Care


12.  Exelon indebtedness issued during the first quarter of 2001.

     A.   Commercial  paper issued  through  Chase  Manhattan  Bank on behalf of
          Exelon  during the first  quarter,  ranging  from $30  million to $130
          million at an average interest rate of 6.178%.

13.  Amount and terms of any  short-term  debt issued by any Utility  Subsidiary
     during the first quarter of 2001.

     A.   Commercial  paper issued through Bank One on behalf of PECO during the
          first quarter, ranging from $0 to $465 million, at an average interest
          rate of 5.88%.

     B.   Contributions to and Loans From the Utility Money Pool




                     Contributions to the Utility Money Pool
                               Outstanding Amounts

     Date                    ComEd                     PECO                      Total
----------------      --------------------      --------------------      --------------------

                                                                      
01/01/01                    $ 400,000,000       -                               $ 400,000,000
01/02/01                    $ 400,000,000       -                               $ 400,000,000
01/03/01                    $ 400,000,000       -                               $ 400,000,000

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

Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

01/04/01                    $ 400,000,000       -                               $ 400,000,000
01/05/01                    $ 400,000,000       -                               $ 400,000,000
01/06/01                    $ 400,000,000       -                               $ 400,000,000
01/07/01                    $ 400,000,000       -                               $ 400,000,000
01/08/01                    $ 400,000,000       -                               $ 400,000,000
01/09/01                    $ 400,000,000       -                               $ 400,000,000
01/10/01                    $ 400,000,000       -                               $ 400,000,000
01/11/01                    $ 400,000,000       -                               $ 400,000,000
01/12/01                    $ 400,000,000       -                               $ 400,000,000
01/13/01                    $ 400,000,000       -                               $ 400,000,000
01/14/01                    $ 400,000,000       -                               $ 400,000,000
01/15/01                    $ 400,000,000       -                               $ 400,000,000
01/16/01                    $ 400,000,000       -                               $ 400,000,000
01/17/01                    $ 400,000,000       -                               $ 400,000,000
01/18/01                    $ 400,000,000       -                               $ 400,000,000
01/19/01                    $ 400,000,000       -                               $ 400,000,000
01/20/01                    $ 400,000,000       -                               $ 400,000,000
01/21/01                    $ 400,000,000       -                               $ 400,000,000
01/22/01                    $ 400,000,000       -                               $ 400,000,000
01/23/01                    $ 400,000,000       -                               $ 400,000,000
01/24/01                    $ 400,000,000       -                               $ 400,000,000
01/25/01                    $ 400,000,000       -                               $ 400,000,000
01/26/01                    $ 400,000,000       -                               $ 400,000,000
01/27/01                    $ 400,000,000       -                               $ 400,000,000
01/28/01                    $ 400,000,000       -                               $ 400,000,000
01/29/01                    $ 400,000,000       -                               $ 400,000,000
01/30/01                    $ 400,000,000       -                               $ 400,000,000
01/31/01                    $ 400,000,000       -                               $ 400,000,000

02/01/01                    $ 400,000,000       -                               $ 400,000,000
02/02/01                    $ 400,000,000       -                               $ 400,000,000
02/03/01                    $ 400,000,000       -                               $ 400,000,000
02/04/01                    $ 400,000,000       -                               $ 400,000,000
02/05/01                    $ 400,000,000       -                               $ 400,000,000
02/06/01                    $ 400,000,000       -                               $ 400,000,000
02/07/01                    $ 400,000,000       -                               $ 400,000,000
02/08/01                    $ 400,000,000       -                               $ 400,000,000
02/09/01                    $ 400,000,000       -                               $ 400,000,000
02/10/01                    $ 400,000,000       -                               $ 400,000,000
02/11/01                    $ 400,000,000       -                               $ 400,000,000
02/12/01                    $ 400,000,000       -                               $ 400,000,000
02/13/01                    $ 400,000,000       -                               $ 400,000,000
02/14/01                    $ 400,000,000       -                               $ 400,000,000
02/15/01                    $ 400,000,000       -                               $ 400,000,000
02/16/01                    $ 400,000,000       -                               $ 400,000,000
02/17/01                    $ 400,000,000       -                               $ 400,000,000
02/18/01                    $ 400,000,000       -                               $ 400,000,000
02/19/01                    $ 400,000,000       -                               $ 400,000,000
02/20/01                    $ 400,000,000       -                               $ 400,000,000
02/21/01                    $ 400,000,000       -                               $ 400,000,000
02/22/01                    $ 400,000,000       -                               $ 400,000,000
02/23/01                    $ 400,000,000       -                               $ 400,000,000
02/24/01                    $ 400,000,000       -                               $ 400,000,000
02/25/01                    $ 400,000,000       -                               $ 400,000,000
02/26/01                    $ 400,000,000       -                               $ 400,000,000
02/27/01                    $ 400,000,000       -                               $ 400,000,000
02/28/01                    $ 400,000,000       -                               $ 400,000,000

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


Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

03/01/01                    $ 400,000,000       -                               $ 400,000,000
03/02/01                    $ 400,000,000       -                               $ 400,000,000
03/03/01                    $ 400,000,000       -                               $ 400,000,000
03/04/01                    $ 400,000,000       -                               $ 400,000,000
03/05/01                    $ 400,000,000       -                               $ 400,000,000
03/06/01                    $ 400,000,000       -                               $ 400,000,000
03/07/01                    $ 400,000,000       -                               $ 400,000,000
03/08/01                    $ 400,000,000       -                               $ 400,000,000
03/09/01                    $ 400,000,000       -                               $ 400,000,000
03/10/01                    $ 400,000,000       -                               $ 400,000,000
03/11/01                    $ 400,000,000       -                               $ 400,000,000
03/12/01                    $ 247,000,000       -                               $ 247,000,000
03/13/01                    $ 247,000,000       -                               $ 247,000,000
03/14/01                    $ 247,000,000       -                               $ 247,000,000
03/15/01                    $ 247,000,000       -                               $ 247,000,000
03/16/01                    $ 247,000,000       -                               $ 247,000,000
03/17/01                    $ 247,000,000       -                               $ 247,000,000
03/18/01                    $ 247,000,000       -                               $ 247,000,000
03/19/01                    $ 247,000,000       -                               $ 247,000,000
03/20/01                    $ 247,000,000       -                               $ 247,000,000
03/21/01                    $ 247,000,000       -                               $ 247,000,000
03/22/01                    $ 247,000,000       -                               $ 247,000,000
03/23/01                    $ 247,000,000       -                               $ 247,000,000
03/24/01                    $ 247,000,000       -                               $ 247,000,000
03/25/01                    $ 247,000,000       -                               $ 247,000,000
03/26/01                    $ 247,000,000       -                               $ 247,000,000
03/27/01                    $ 247,000,000       -                               $ 247,000,000
03/28/01                    $ 247,000,000       -                               $ 247,000,000
03/29/01                    $ 252,000,000       -                               $ 252,000,000
03/30/01                    $ 352,000,000       -                               $ 352,000,000
03/31/01                    $ 352,000,000       -                               $ 352,000,000





                          Loans from Utility Money Pool
                               Outstanding Amounts

     Date                    ComEd                     PECO                      Total
----------------      --------------------      --------------------      --------------------
                                                                     
01/01/01              -                               $ 400,000,000             $ 400,000,000
01/02/01              -                               $ 400,000,000             $ 400,000,000
01/03/01              -                               $ 400,000,000             $ 400,000,000
01/04/01              -                               $ 400,000,000             $ 400,000,000
01/05/01              -                               $ 400,000,000             $ 400,000,000
01/06/01              -                               $ 400,000,000             $ 400,000,000
01/07/01              -                               $ 400,000,000             $ 400,000,000
01/08/01              -                               $ 400,000,000             $ 400,000,000
01/09/01              -                               $ 400,000,000             $ 400,000,000
01/10/01              -                               $ 400,000,000             $ 400,000,000
01/11/01              -                               $ 400,000,000             $ 400,000,000
01/12/01              -                               $ 400,000,000             $ 400,000,000
01/13/01              -                               $ 400,000,000             $ 400,000,000
01/14/01              -                               $ 400,000,000             $ 400,000,000
01/15/01              -                               $ 400,000,000             $ 400,000,000
01/16/01              -                               $ 400,000,000             $ 400,000,000

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


Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

01/17/01              -                               $ 400,000,000             $ 400,000,000
01/18/01              -                               $ 400,000,000             $ 400,000,000
01/19/01              -                               $ 400,000,000             $ 400,000,000
01/20/01              -                               $ 400,000,000             $ 400,000,000
01/21/01              -                               $ 400,000,000             $ 400,000,000
01/22/01              -                               $ 400,000,000             $ 400,000,000
01/23/01              -                               $ 400,000,000             $ 400,000,000
01/24/01              -                               $ 400,000,000             $ 400,000,000
01/25/01              -                               $ 400,000,000             $ 400,000,000
01/26/01              -                               $ 400,000,000             $ 400,000,000
01/27/01              -                               $ 400,000,000             $ 400,000,000
01/28/01              -                               $ 400,000,000             $ 400,000,000
01/29/01              -                               $ 400,000,000             $ 400,000,000
01/30/01              -                               $ 400,000,000             $ 400,000,000
01/31/01              -                               $ 400,000,000             $ 400,000,000

02/01/01              -                               $ 400,000,000             $ 400,000,000
02/02/01              -                               $ 400,000,000             $ 400,000,000
02/03/01              -                               $ 400,000,000             $ 400,000,000
02/04/01              -                               $ 400,000,000             $ 400,000,000
02/05/01              -                               $ 400,000,000             $ 400,000,000
02/06/01              -                               $ 400,000,000             $ 400,000,000
02/07/01              -                               $ 400,000,000             $ 400,000,000
02/08/01              -                               $ 400,000,000             $ 400,000,000
02/09/01              -                               $ 400,000,000             $ 400,000,000
02/10/01              -                               $ 400,000,000             $ 400,000,000
02/11/01              -                               $ 400,000,000             $ 400,000,000
02/12/01              -                               $ 400,000,000             $ 400,000,000
02/13/01              -                               $ 400,000,000             $ 400,000,000
02/14/01              -                               $ 400,000,000             $ 400,000,000
02/15/01              -                               $ 400,000,000             $ 400,000,000
02/16/01              -                               $ 400,000,000             $ 400,000,000
02/17/01              -                               $ 400,000,000             $ 400,000,000
02/18/01              -                               $ 400,000,000             $ 400,000,000
02/19/01              -                               $ 400,000,000             $ 400,000,000
02/20/01              -                               $ 400,000,000             $ 400,000,000
02/21/01              -                               $ 400,000,000             $ 400,000,000
02/22/01              -                               $ 400,000,000             $ 400,000,000
02/23/01              -                               $ 400,000,000             $ 400,000,000
02/24/01              -                               $ 400,000,000             $ 400,000,000
02/25/01              -                               $ 400,000,000             $ 400,000,000
02/26/01              -                               $ 400,000,000             $ 400,000,000
02/27/01              -                               $ 400,000,000             $ 400,000,000
02/28/01              -                               $ 400,000,000             $ 400,000,000

03/01/01              -                               $ 400,000,000             $ 400,000,000
03/02/01              -                               $ 400,000,000             $ 400,000,000
03/03/01              -                               $ 400,000,000             $ 400,000,000
03/04/01              -                               $ 400,000,000             $ 400,000,000
03/05/01              -                               $ 400,000,000             $ 400,000,000
03/06/01              -                               $ 400,000,000             $ 400,000,000
03/07/01              -                               $ 400,000,000             $ 400,000,000
03/08/01              -                               $ 400,000,000             $ 400,000,000
03/09/01              -                               $ 400,000,000             $ 400,000,000
03/10/01              -                               $ 400,000,000             $ 400,000,000
03/11/01              -                               $ 400,000,000             $ 400,000,000

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Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

03/12/01              -                               $ 247,000,000             $ 247,000,000
03/13/01              -                               $ 247,000,000             $ 247,000,000
03/14/01              -                               $ 247,000,000             $ 247,000,000
03/15/01              -                               $ 247,000,000             $ 247,000,000
03/16/01              -                               $ 247,000,000             $ 247,000,000
03/17/01              -                               $ 247,000,000             $ 247,000,000
03/18/01              -                               $ 247,000,000             $ 247,000,000
03/19/01              -                               $ 247,000,000             $ 247,000,000
03/20/01              -                               $ 247,000,000             $ 247,000,000
03/21/01              -                               $ 247,000,000             $ 247,000,000
03/22/01              -                               $ 247,000,000             $ 247,000,000
03/23/01              -                               $ 247,000,000             $ 247,000,000
03/24/01              -                               $ 247,000,000             $ 247,000,000
03/25/01              -                               $ 247,000,000             $ 247,000,000
03/26/01              -                               $ 247,000,000             $ 247,000,000
03/27/01              -                               $ 247,000,000             $ 247,000,000
03/28/01              -                               $ 247,000,000             $ 247,000,000
03/29/01              -                               $ 252,000,000             $ 252,000,000
03/30/01              -                               $ 352,000,000             $ 352,000,000
03/31/01              -                               $ 352,000,000             $ 352,000,000






Interest Rates for Utility Money Pool

     Date                Interest Rate
----------------      --------------------

01/01/01                     6.49%
01/02/01                     6.49%
01/03/01                     6.50%
01/04/01                     6.41%
01/05/01                     6.32%
01/06/01                     6.32%
01/07/01                     6.32%
01/08/01                     6.32%
01/09/01                     6.31%
01/10/01                     6.31%
01/11/01                     6.30%
01/12/01                     6.26%
01/13/01                     6.26%
01/14/01                     6.26%
01/15/01                     6.26%
01/16/01                     6.26%
01/17/01                     6.20%
01/18/01                     6.15%
01/19/01                     6.17%
01/20/01                     6.17%
01/21/01                     6.17%
01/22/01                     6.13%
01/23/01                     6.07%
01/24/01                     6.05%
01/25/01                     6.07%
01/26/01                     6.02%
01/27/01                     6.02%

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Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

01/28/01                     6.02%
01/29/01                     6.02%
01/30/01                     6.01%
01/31/01                     6.00%

02/01/01                     5.91%
02/02/01                     5.83%
02/03/01                     5.83%
02/04/01                     5.83%
02/05/01                     5.79%
02/06/01                     5.77%
02/07/01                     5.79%
02/08/01                     5.77%
02/09/01                     5.74%
02/10/01                     5.74%
02/11/01                     5.74%
02/12/01                     5.73%
02/13/01                     5.69%
02/14/01                     5.68%
02/15/01                     5.70%
02/16/01                     5.66%
02/17/01                     5.66%
02/18/01                     5.66%
02/19/01                     5.66%
02/20/01                     5.68%
02/21/01                     5.66%
02/22/01                     5.65%
02/23/01                     5.64%
02/24/01                     5.64%
02/25/01                     5.64%
02/26/01                     5.62%
02/27/01                     5.61%
02/28/01                     5.60%

03/01/01                     5.58%
03/02/01                     5.57%
03/03/01                     5.57%
03/04/01                     5.57%
03/05/01                     5.59%
03/06/01                     5.53%
03/07/01                     5.49%
03/08/01                     5.48%
03/09/01                     5.48%
03/10/01                     5.48%
03/11/01                     5.48%
03/12/01                     5.49%
03/13/01                     5.47%
03/14/01                     5.44%
03/15/01                     5.45%
03/16/01                     5.41%
03/17/01                     5.41%
03/18/01                     5.41%
03/19/01                     5.40%
03/20/01                     5.32%
03/21/01                     5.29%
03/22/01                     5.25%

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Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

03/23/01                     5.21%
03/24/01                     5.21%
03/25/01                     5.21%
03/26/01                     5.22%
03/27/01                     5.21%
03/28/01                     5.21%
03/29/01                     5.23%
03/30/01                     5.26%
03/31/01                     5.26%


14.  During the first  quarter of 2001, no financings  were  consummated  by any
     Non-Utility Subsidiary not exempt under Rule 52.

15.  Notional   amount  and  principal   terms  of  any  hedge   instruments  or
     anticipatory  hedges  entered  into the first  quarter of 2001 and  parties
     thereto.

          During the first quarter of 2001, Exelon entered into forward starting
          interest  rate  swap  arrangements  in order to  hedge  interest  rate
          exposure on a proposed  debt  offering in the second  quarter of 2001.
          The  interest  rate swaps are  forward  starting on or before June 30,
          2001 and exchange three-month LIBOR for the fixed bid rate.

16.  The name, parent company and amount invested in any intermediate subsidiary
     or financing subsidiary during the first quarter of 2001 and the amount and
     terms of any securities issued by such subsidiaries during the quarter.



       Parent Company                             Subsidiary Company                    Total Amount
       --------------                             ------------------                    ------------
                                                                                 
       Exelon Infrastructure Services, Inc.       P.A.C.E. Field Services, LLC          $     57,558
       Exelon Infrastructure Services, Inc.       Electric Services, Inc.               $     96,111
       Exelon Infrastructure Services, Inc.       MJ Electric, Inc.                     $    111,790

       Exelon Infrastructure Services, Inc.       Blair Park Services, Inc.             $ 32,560,587 (a)

       Exelon Enterprises Company, LLC            Exelon Infrastructure Services, Inc.  $ 29,713,365 (b)


     (a)  The $32,560,587  includes $29,713,365 of cash and $2,847,222 of Exelon
          Infrastructure  Services,  Inc. stock  (225,970  shares) issued to the
          previous owners of Blair Park Services, Inc.
     (b)  Exelon  Infrastructure  Services,  Inc. issued 2,358,203 shares of its
          stock at a total price of $29,713,365 to Exelon  Enterprises  Company,
          LLC.

17.  A list of U-6B-2 forms filed with the  Commission  during the first quarter
     of 2001, including the name of the filing entity and the date of filing.

          None.

18.  The  consolidated  and separate balance sheets of each company that engaged
     in jurisdictional financing transactions during the first quarter of 2001.

          Exelon,  PECO and ComEd  Balance  Sheets  are  incorporated  herein by
          reference to the quarterly  reports on Form 10-Q for Exelon,  PECO and
          ComEd for the period ended March 31, 2001.

19.  Capital  Structure of Exelon and its utility  subsidiaries  as of March 31,
     2001 are as follows (in millions, except percentage data):

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

Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------



                            1
                        Debt                  Common Equity        Preferred Securities of Subsidiaries
                  Amount    Percentage      Amount     Percentage          Amount       Percentage
                  ------    ----------      ------     ----------          ------       ----------
                                                                          
Exelon           $15,294       65%          $7,357        32%               $630            3%




                            1                                     Preferred Stock and Mandatorily Redeemable
                        Debt                  Common Equity            Preferred Stock of a Subsidiary
                  Amount    Percentage      Amount     Percentage          Amount       Percentage
                  ------    ----------      ------     ----------          ------       ----------
                                                                          
PECO              $6,560        94%           $150         2%               $302            4%

ComEd             $7,149        57%         $4,952        40%               $335            3%


     1    see definition under Item 3.


20.  The consolidated  retained earnings analyses of Exelon,  PECO and ComEd are
     attached as Exhibit B.


21.  Registration statements filed under the Securities Act of 1933 with respect
     to securities  that are the subject of the Financing U-1,  incorporated  by
     reference into this Certificate of Notification.


          Exelon registered a $1.5 billion shelf  registration  during the first
          quarter of 2001 for general corporate purposes.  Form S-3 Registration
          Statement, filed March 27, 2001, Registration No. 333-57640.



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Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------

                                S I G N A T U R E

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

Date:  May 30, 2001

                                               EXELON CORPORATION

                                               By: /s/ Jean H. Gibson
                                               ----------------------
                                               Vice President and Controller









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Exelon Corporation - Rule 24-CERT - Certificate Concerning Terms and Conditions
                                                           Date Filed: 5/30/2001
--------------------------------------------------------------------------------


                                                                      Exhibit B
                                                                     Page 1 of 1


                   Exelon Corporation and Subsidiary Companies
                           Retained Earnings Analysis
                      For the Quarter Ended March 31, 2001
                                  (In millions)


Beginning Balance                                $332
Net Income                                        399
Dividends:
   Common Stock                                  (176)
   Tax benefit on stock options exercised          15
                                                 ----
Ending Balance                                   $570
                                                 ====



                  PECO Energy Company and Subsidiary Companies
                           Retained Earnings Analysis
                      For the Quarter Ended March 31, 2001
                                  (In millions)


Beginning Balance                                $197
Net Income                                        122
Dividends:
   Common Stock                                   (45)
   Preferred Stock                                 (2)
                                                 ----
Ending Balance                                   $272
                                                 ====



                  Commonwealth Edison and Subsidiary Companies
                           Retained Earnings Analysis
                      For the Quarter Ended March 31, 2001
                                  (In millions)


Beginning Balance                                $133
  Net Income                                      146
  Dividends:
     Common Stock                                 (63)
                                                 ----
Ending Balance                                   $216
                                                 ====



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