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                                  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, 2002
through March 31, 2002. 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
       million. At March 31, 2002,  Exelon's "aggregate  investment" (as defined
       in rule 53(a) under PUHCA) in all EWGs and FUCOs was approximately $1,353
       million,   and  accordingly,   at  March  31,  2002,  Exelon's  remaining
       investment  capacity  under the Modified  Rule 53 Test was  approximately
       $2,647  million.  At March  31,  2002,  Exelon's  "consolidated  retained
       earnings"  (as defined in rule 53(a)  under the PUHCA) was  approximately
       $1,006 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, 2002, Exelon's  consolidated  capitalization ratio was: debt
       63%,  common equity 34%, 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, 2002, the market-to-book  ratio of Exelon's common stock was
       2.12 to 1.

5.     In the first  quarter of 2002,  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, total
       earnings growth by EWG and FUCO Project in the first quarter.

7.     Pursuant to a request  for  confidential  treatment  under rule 104(b) of
       PUHCA,  Exelon is  concurrently  filing in paper format as Exhibit A, net
       income and  revenues of  Exelon's  EWG and FUCO  Projects  for the twelve
       months ending March 31, 2002.

8.     Sale of any Common Stock or Preferred  Securities issued by Exelon during
       the  first  quarter  of 2002,  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 2002, 674,184 shares of common stock were issued under various employee compensation plans with a price range of $43.63 to $53.63 per share. The average price for the period was $49.86. 9. Options issued or issuable during the quarter. Exelon granted 3,729,630 stock options in the first quarter of 2002 at an exercise price of $46.93 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 2002. 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 Power Team $30,314,922 12 months Power trading and marketing Exelon Exelon Enterprises 14,047,792 12-36 months Surety bonds Exelon Exelon Generation 43,902,034 12-36 months Surety bonds 12. Exelon indebtedness issued during the first quarter of 2002. A. Overnight commercial paper issued through Chase Manhattan Bank on behalf of Exelon during the first quarter. Daily balances ranged from $200 million to $280 million at an average interest rate of 2.13%. 13. Amount and terms of any short-term debt issued by any Utility Subsidiary during the first quarter of 2002. A. Overnight commercial paper issued through Bank One on behalf of PECO during the first quarter. Daily balances ranged from $0 to $115 million at an average interest rate of 1.87%. B. Overnight commercial paper issued through Chase Manhattan Bank on behalf of ComEd during the first quarter. Daily balances ranged from $0 to $50 million at an average interest rate of 2.13%. B. Contributions to and Loans from the Utility Money Pool: The activity below reflects a contribution to the money pool by ComEd of Indiana, Inc. and a loan to Commonwealth Edison Company (ComEd.) ComEd of ComEd Indiana Daily Interest Interest Interest Date Balance Rate Expense Income - ----------------- ----------------- ----------------- ----------------------- --------------------- 28-Dec-01 13,000,000 2.09% 754.72 754.72 29-Dec-01 13,000,000 2.09% 754.72 754.72 30-Dec-01 13,000,000 2.09% 754.72 754.72 31-Dec-01 13,000,000 2.09% 754.72 754.72 ----------------------- --------------------- AVG/Total 2.09% $3,018.89 $3,018.89 ======================= =====================

ComEd of ComEd Indiana Daily Interest Interest Interest Date Balance Rate Expense Income - ----------------- ----------------- ------------- ------------ --------------------- 1-Jan-02 $13,000,000 2.09% $754.72 $754.72 2-Jan-02 $13,000,000 2.09% 754.72 754.72 3-Jan-02 $13,000,000 2.07% 747.50 747.50 4-Jan-02 $13,000,000 2.04% 736.67 736.67 5-Jan-02 $13,000,000 2.04% 736.67 736.67 6-Jan-02 $13,000,000 2.04% 736.67 736.67 7-Jan-02 $13,000,000 2.03% 733.06 733.06 8-Jan-02 $13,000,000 2.02% 729.44 729.44 9-Jan-02 $13,000,000 2.03% 733.06 733.06 10-Jan-02 $13,000,000 2.02% 729.44 729.44 11-Jan-02 $13,000,000 2.01% 725.83 725.83 12-Jan-00 $13,000,000 2.01% 725.83 725.83 13-Jan-02 $13,000,000 2.01% 725.83 725.83 14-Jan-02 $13,000,000 2.00% 722.22 722.22 15-Jan-02 $13,000,000 2.01% 725.83 725.83 16-Jan-02 $13,000,000 1.98% 715.00 715.00 17-Jan-02 $13,000,000 1.93% 696.94 696.94 18-Jan-02 $13,000,000 1.92% 693.33 693.33 19-Jan-02 $13,000,000 1.92% 693.33 693.33 20-Jan-02 $13,000,000 1.92% 693.33 693.33 21-Jan-02 $13,000,000 1.92% 693.33 693.33 22-Jan-02 $13,000,000 1.89% 682.50 682.50 23-Jan-02 $13,000,000 1.90% 686.11 686.11 24-Jan-02 $13,000,000 1.90% 686.11 686.11 25-Jan-02 $13,000,000 1.88% 678.89 678.89 26-Jan-02 $13,000,000 1.88% 678.89 678.89 27-Jan-02 $13,000,000 1.88% 678.89 678.89 28-Jan-02 $13,000,000 1.88% 678.89 678.89 29-Jan-02 $13,000,000 1.88% 678.89 678.89 30-Jan-02 $13,000,000 1.87% 675.28 675.28 31-Jan-02 $13,000,000 1.88% 678.89 678.89 ------------ ------------- AVG/Total 1.97% $22,006.11 $22,006.11 ============ =============

ComEd of ComEd Indiana Daily Interest Interest Interest Date Balance Rate Expense Income - ----------------- ----------------- ------------- ------------ --------------------- 1-Feb-02 $13,000,000 1.87% $675.28 $675.28 2-Feb-02 $13,000,000 1.87% 675.28 675.28 3-Feb-02 $13,000,000 1.87% 675.28 675.28 4-Feb-02 $13,000,000 1.86% 671.67 671.67 5-Feb-02 $13,000,000 1.84% 664.44 664.44 6-Feb-02 $13,000,000 1.83% 660.83 660.83 7-Feb-02 $13,000,000 1.83% 660.83 660.83 8-Feb-02 $13,000,000 1.82% 657.22 657.22 9-Feb-02 $13,000,000 1.82% 657.22 657.22 10-Feb-02 $13,000,000 1.82% 657.22 657.22 11-Feb-02 $13,000,000 1.82% 657.22 657.22 12-Feb-02 $13,000,000 1.82% 657.22 657.22 13-Feb-02 $13,000,000 1.82% 657.22 657.22 14-Feb-02 $13,000,000 1.82% 657.22 657.22 15-Feb-02 $13,000,000 1.84% 664.44 664.44 16-Feb-02 $13,000,000 1.84% 664.44 664.44 17-Feb-02 $13,000,000 1.84% 664.44 664.44 18-Feb-02 $13,000,000 1.84% 664.44 664.44 19-Feb-02 $13,000,000 1.82% 657.22 657.22 20-Feb-02 $13,000,000 1.79% 646.39 646.39 21-Feb-02 $13,000,000 1.79% 646.39 646.39 22-Feb-02 $13,000,000 1.78% 642.78 642.78 23-Feb-02 $13,000,000 1.78% 642.78 642.78 24-Feb-02 $13,000,000 1.78% 642.78 642.78 25-Feb-02 $13,000,000 1.77% 639.17 639.17 26-Feb-02 $13,000,000 1.78% 642.78 642.78 27-Feb-02 $13,000,000 1.77% 639.17 639.17 28-Feb-02 $13,000,000 1.75% 631.94 631.94 ------------ ------------- AVG/Total 1.82% $18,373.33 $18,373.33 ============ =============

ComEd of ComEd Indiana Daily Interest Interest Interest Date Balance Rate Expense Income - ----------------- ----------------- ------------- ------------ --------------------- 1-Mar-02 $13,000,000 1.74% $628.33 $628.33 2-Mar-02 $13,000,000 1.74% 628.33 628.33 3-Mar-02 $13,000,000 1.74% 628.33 628.33 4-Mar-02 $13,000,000 1.73% 624.72 624.72 5-Mar-02 $13,000,000 1.71% 617.50 617.50 6-Mar-02 $13,000,000 1.72% 621.11 621.11 7-Mar-02 $13,000,000 1.73% 624.72 624.72 8-Mar-02 $20,500,000 1.73% 985.14 985.14 9-Mar-02 $20,500,000 1.73% 985.14 985.14 10-Mar-02 $20,500,000 1.73% 985.14 985.14 11-Mar-02 $20,500,000 1.73% 985.14 985.14 12-Mar-02 $20,500,000 1.73% 985.14 985.14 13-Mar-02 $20,500,000 1.73% 985.14 985.14 14-Mar-02 $20,500,000 1.75% 996.53 996.53 15-Mar-02 $20,500,000 1.75% 996.53 996.53 16-Mar-02 $20,500,000 1.75% 996.53 996.53 17-Mar-02 $20,500,000 1.75% 996.53 996.53 18-Mar-02 $20,500,000 1.75% 996.53 996.53 19-Mar-02 $20,500,000 1.75% 996.53 996.53 20-Mar-02 $20,500,000 1.72% 979.44 979.44 21-Mar-02 $20,500,000 1.73% 985.14 985.14 22-Mar-02 $20,500,000 1.72% 979.44 979.44 23-Mar-02 $20,500,000 1.72% 979.44 979.44 24-Mar-02 $20,500,000 1.72% 979.44 979.44 25-Mar-02 $20,500,000 1.74% 990.83 990.83 26-Mar-02 $20,500,000 1.73% 985.14 985.14 27-Mar-02 $20,500,000 1.73% 985.14 985.14 28-Mar-02 $20,500,000 1.75% 996.53 996.53 29-Mar-02 $20,500,000 1.75% 996.53 996.53 30-Mar-02 $20,500,000 1.75% 996.53 996.53 31-Mar-02 $20,500,000 1.75% 996.53 996.53 AVG/Total 1.74% $28,113.19 $28,113.19 ============ =============

14. During the first quarter of 2002, 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 during the first quarter of 2002 and parties thereto. In January 2002, ComEd entered into two fixed-floating interest rate swaps with Credit Suisse First Boston and JP Morgan. These swaps, carrying a notional amount of $150 million and $100 million, respectively, hedge ComEd's future fair value risk associated with the change in the value of 7.625% Notes, $150 million, due 1/15/07 and 8.25% First Mortgage Bonds, $100 million, due 10/01/06. The terms and payment structure of the swap are designed to exactly mirror the terms and the remaining payment structure for the underlying bond. This swap is designated as a fair value hedge. In January 2002, ComEd entered into a 10-year forward starting swap with J. P. Morgan . This forward starting swap, carrying a notional amount of $125 million, hedged a portion of ComEd's future interest rate exposure associated with its anticipated issuance of $400 million in long-term debt in March of 2002. This swap has been designated as a cash flow hedge in the attempt to minimize the variability of the future interest expense associated with changes in the 3 month LIBOR rate. In February 2002, ComEd entered into 10-year and 5-year forward starting swaps with Morgan Stanley (in two separate transactions). These forward starting swaps, carrying a notional amount of $75 million and $100 million respectively, hedged a portion of ComEd's future interest rate exposure associated with its issuance of $200 million reopening in the third quarter of 2002 and a $700 million issuance in the fourth quarter of 2002 respectively. These swaps have been designated as cash flow hedges in the attempt to minimize the variability of the future interest expense associated with changes in the 3 month LIBOR rate. 16. The name, parent company and amount invested in any intermediate subsidiary or financing subsidiary during the first quarter of 2002 and the amount and terms of any securities issued by such subsidiaries during the quarter. None. 17. A list of U-6B-2 forms filed with the Commission since the last quarterly Rule 24 Certificate, 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 2002. None. 19. Capital Structure of Exelon and its utility subsidiaries as of March 31, 2002 are as follows (in millions, except percentage data): Debt 1 Common Equity Preferred Securities of Subsidiaries Amount Percentage Amount Percentage Amount Percentage Exelon $14,660 63% $8,051 34% $613 3% Preferred Stock and Mandatorily Redeemable Debt 1 Common Equity Preferred Stock of a Subsidiary Amount Percentage Amount Percentage Amount Percentage PECO $5,985 91% $356 5% $284 4% ComEd $6,803 55% $5,124 42% $336 3% Genco $1,025 26% $2,932 74% - - PECO Energy Power Co. - - $128 100% - - Susquehanna Power Co. - - $120 100% - - Susquehanna Electric Co. - - $(1) 100% - - 1 see definition under Item 3. 20. The consolidated retained earnings analyses of Exelon, ComEd, PECO, Genco, PECO Energy Power Company, Susquehanna Power Company and Susquehanna Electric Company 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. None. 22. Additional information. None

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, 2002 EXELON CORPORATION By: /s/ Ruth Ann M. Gillis Senior Vice President and Chief Financial Officer

Exhibit B Page 1 of 1 Exelon Corporation and Subsidiary Companies Retained Earnings Analysis For the Quarter Ended March 31, 2002 (In millions) Beginning Balance $1,200 Net Income 8 Dividends: Common Stock (141) Tax benefit on stock options exercised 7 ------ Ending Balance $1,073 ====== PECO Energy Company and Subsidiary Companies Retained Earnings Analysis For the Quarter Ended March 31, 2002 (In millions) Beginning Balance $270 Net Income 89 Dividends: Common Stock (85) Preferred Stock (2) ------ Ending Balance $272 ====== Commonwealth Edison and Subsidiary Companies Retained Earnings Analysis For the Quarter Ended March 31, 2002 (In millions) Beginning Balance $257 Net Income 129 Dividends: Common Stock (118) ------ Ending Balance $268 ====== Exelon Generation Retained Earnings Analysis For the Quarter Ended March 31, 2002 (In millions) Beginning Balance $524 Net Income 79 Dividends: Common Stock 0 ------ Ending Balance $603 ======

PECO Energy Power Company Retained Earnings Analysis For the Quarter Ended March 31, 2002 (In millions) Beginning Balance $26 Net Income 3 Dividends: Common Stock 0 ---- Ending Balance $29 ==== Susquehanna Power Company Retained Earnings Analysis For the Quarter Ended March 31, 2002 (In millions) Beginning Balance $23 Net Income 2 Dividends: Common Stock 0 ---- Ending Balance $25 ==== Susquehanna Electric Company Retained Earnings Analysis For the Quarter Ended March 31, 2002 (In millions) Beginning Balance $ 0 Net Income (2) Dividends: Common Stock 0 ---- Ending Balance $ (2) ====