United States
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549



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In the Matter of Exelon Corporation                 CERTIFICATE OF NOTIFICATION

File No. 70-9645

Public Utility Holding Company Act of 1935  (PUHCA)

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         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 "Merger U-1") dated October 18, 2000
and the Commission's Order dated October 19, 2000. This certificate reports
information concerning associate company services provided during the period
from January 1, 2002 through June 30, 2002. Any capitalized terms used herein
but not defined have the respective meanings given U-1 or in the Commission's
Order.

See attached spreadsheet for:

1.       List of companies providing services;
2.       List of companies receiving services;
3.       A description of the type of services provided;
4.       The dollar amount of the services provided, by category;
5.       A description of the method of charging for services, i.e., cost, or,
         if permitted, other than cost;
6.       A reference to the agreement under which such services were provided
         and transfer charges were based.



                                    SIGNATURE

         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:    August 30, 2002
                                EXELON CORPORATION


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













Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- Commonwealth Edison Company Exelon Business Services Company Facility Services $ 182,006 Cost AIA Commonwealth Edison Company Exelon Business Services Company Fleet Services $ 206,039 Cost AIA Commonwealth Edison Company Exelon Business Services Company Offsite Facility Rental Usage $ 92,599 Cost AIA Commonwealth Edison Company Exelon Business Services Company PIC Payment Processing & Exceptions $ 3,258 Cost AIA Commonwealth Edison Company Exelon Business Services Company Printing, mail, copying etc $ 478,062 Cost AIA Commonwealth Edison Company Exelon Business Services Company Support Services $ 34,741 Cost AIA Commonwealth Edison Company Exelon Business Services Company Support Services - EPS $ 332,805 Cost AIA Commonwealth Edison Company Exelon Enterprises Company, LLC Facility Services $ 2,592 Cost AIA Commonwealth Edison Company Exelon Enterprises Company, LLC PIC Payment Processing & Exceptions $ 112 Cost AIA Commonwealth Edison Company Exelon Enterprises Company, LLC Real Estate Services $ 11,345 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Central Mapping (Blueprints) $ 84,098 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Energy Consulting Services $ 190,673 Mkt. Rate AIA Commonwealth Edison Company Exelon Generation Company, LLC Engineering Consulting $ 1,833 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Engineering Services $ 9,471 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Equipment Maintenance $3,778,476 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Equipment Metering $2,713,263 Cost AIA 1 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- Commonwealth Edison Company Exelon Generation Company, LLC Facility Services $ 3,210 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Fleet Services $ 435,259 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Information Technology Services $ 144,819 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Legislative Services $ 61,917 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Offsite Facility Rental Usage $ 15,870 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC PIC Payment Processing & Exceptions $ 7 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Printing, mail, copying etc $ 124,291 Cost AIA Commonwealth Edison Company Exelon Generation Company, LLC Real Estate Services $ 62,321 Cost AIA Commonwealth Edison Company Exelon Thermal Holdings Inc. Offsite Facility Rental Usage $ 9,741 Cost AIA Commonwealth Edison Company PECO Energy Company Claims Services $ 93,748 Cost AIA Commonwealth Edison Company PECO Energy Company Communications Services $ 351,079 Cost AIA Commonwealth Edison Company PECO Energy Company Financial Services $ 100,979 Cost AIA Commonwealth Edison Company PECO Energy Company Fleet Services $ 114,385 Cost AIA Commonwealth Edison Company PECO Energy Company Human Resources Services $ 819,878 Cost AIA Commonwealth Edison Company PECO Energy Company Information Technology Services $ 721,618 Cost AIA Commonwealth Edison Company PECO Energy Company Marketing Services $ 242,605 Cost AIA 2 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- Commonwealth Edison Company PECO Energy Company Real Estate Services $ 100,001 Cost AIA Commonwealth Edison Company PECO Energy Company Supply / Purchasing Services $ 202,268 Cost AIA Commonwealth Edison Company PECO Energy Company Support Services - Executive $ 103,227 Cost AIA Commonwealth Edison Company PECO Energy Company Training Services $ 252,784 Cost AIA ----------- Total $12,081,379 =========== Exelon Generation Company, LLC AmerGen Energy Company 1. Provide AmerGen with operational and back-office support $22,379,295 Cost SEC Order Exelon Generation Company, LLC ComEd - Energy Delivery Zion U-1 and U-2 Synchronous Condensers $ 538,362 Cost SEC Order Exelon Generation Company, LLC PED - Energy Delivery Operation and Maintenance of 25 cycle Frequency Converters $1,855,880 Cost SEC Order Exelon Generation Company, LLC PED - Energy Delivery Mechanical Services - Fabrication and carpentry. Oregon Shops $ 186,391 Cost SEC Order ----------- Exelon Generation Company, LLC Total $24,959,927 =========== PECO Energy Company Exelon Business Services Company Purchase / Lease / Maintain Vehicles $ 27,267 Cost MSA PECO Energy Company Exelon Business Services Company Real Estate Purchase & Lease Trans $ 1,189,854 Cost MSA PECO Energy Company Exelon Business Services Company Purchase of Materials / Logistics $ 478 Cost MSA PECO Energy Company Exelon Corporate Center Purchase / Lease / Maintain Vehicles $ 13,766 Cost MSA 3 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- PECO Energy Company Exelon Corporate Center Purchase of Materials / Logistics $ 117,504 Cost MSA PECO Energy Company Exelon Corporate Center Real Estate Purchase & Lease Trans $ 137,663 Cost MSA PECO Energy Company Exelon Corporate Center Exelon Performance Systems $ 105,236 Cost MSA PECO Energy Company Exelon Enterprises Company, LLC Purchase of Materials / Logistics $ 495,369 Cost MSA PECO Energy Company Exelon Enterprises Company, LLC Purchase / Lease / Maintain Vehicles $ 20,533 Cost MSA PECO Energy Company Exelon Enterprises Company, LLC Real Estate Purchase & Lease Trans $ 276,451 Cost MSA PECO Energy Company Exelon Generation Company Purchase of Materials / Logistics $ 68,479 Cost MSA PECO Energy Company Exelon Generation Company Purchase / Lease / Maintain Vehicles $ 325,186 Cost MSA PECO Energy Company Exelon Generation Company Environmental & Lab Services $ 29,680 Cost MSA PECO Energy Company Exelon Generation Company Real Estate Purchase & Lease Trans $ 222,969 Cost MSA PECO Energy Company Exelon Generation Company Technical Support $ 172,664 Cost MSA PECO Energy Company Exelon Generation Company Claims Processing $ 49,322 Cost MSA PECO Energy Company Exelon Generation Company Temporary CFO Support $ 67,237 Cost MSA PECO Energy Company Exelon Generation Company Legislative Services $ 3,314 Cost MSA PECO Energy Company Exelon Generation Company IT Services - real time support $ 15,340 Cost MSA PECO Energy Company Exelon Generation Company TM Consulting Services $ 11,652 Cost MSA 4 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- PECO Energy Company Commonwealth Edison Company Environmental & Lab Services $ 113,691 Cost MSA PECO Energy Company Commonwealth Edison Company Training & Methods $ 86,173 Cost MSA PECO Energy Company Commonwealth Edison Company Purchase of Materials / Logistics $ 1,856,852 Cost MSA PECO Energy Company Commonwealth Edison Company Purchase / Lease / Maintain Vehicles $ 213,382 Cost MSA PECO Energy Company Commonwealth Edison Company Financial Services $ 289,912 Cost MSA PECO Energy Company Commonwealth Edison Company Claims Processing $ 85,881 Cost MSA PECO Energy Company Commonwealth Edison Company Communication services $ 182,109 Cost MSA PECO Energy Company Commonwealth Edison Company Human Resources and Labor Relations Services $ 401,856 Cost MSA PECO Energy Company Commonwealth Edison Company IT Services - Shared services $ 993,971 Cost MSA PECO Energy Company Commonwealth Edison Company Energy Acquisition Services - Electric and gas choice. $ 28,307 Cost MSA ----------- PECO Energy Company Total $ 7,602,098 =========== Exelon Thermal Technologies Inc. Northwind Midway LLC Administrative and general $ 2,663 Market (a) Exelon Thermal Technologies Inc. Northwind Midway LLC Plant operators $ 292,600 Market (a) Exelon Thermal Technologies Inc. Northwind Chicago LLC District cooling $ 510,000 Market (b) Exelon Thermal Technologies Inc. Northwind Chicago LLC Administrative and general $ 3,450 Market (c) 5 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- Exelon Thermal Technologies Inc. Northwind Chicago LLC Plant operators $ 244,850 Market (c) Exelon Thermal Technologies Inc. Northwind Aladdin Administrative and General $ 5,285 Market (d) Exelon Thermal Technologies Inc. Northwind Windsor LLC Administrative and general $ 175 Market (e) ----------- Exelon Thermal Technologies Inc. Total $ 1,053,563 =========== (a) Management Services Agreement between Unicom Thermal Technologies Inc. and Northwind Midway, LLC dated June 25, 1999. SEC Order - Rule 87. (b) District Cooling System Use Agreement between Unicom Thermal Technologies, Inc. and Northwind Chicago LLC dated May 19, 2000. SEC Order - Rule 87. (c) Management Services Agreement between Unicom Thermal Technologies Inc. and Northwind Chicago LLC dated May 19, 2000. SEC Order - Rule 87. (d) Management Services Agreement between Unicom Thermal Development Inc. and Exelon Thermal Technologies Inc. dated March 1, 2001. SEC Order. SEC Order - Rule 87. (e) Management Services Agreement between Unicom Thermal Technologies Inc., a New Brunswick corporation, and Northwind Windsor LLC dated September 1, 1997. SEC Order - Rule 87. Northwind Chicago LLC Exelon Thermal Technologies Inc. Chilled water $ 3,717,626 Market (a) =========== (a) Chilled Water Service Agreement between Northwind Chicago LLC and Exelon Thermal Technologies Inc. (formerly Unicom Thermal Technologies Inc.). SEC Order - Rule 87. Blair Park Services Inc. PECO Hyperion Telecommunications Infrastructure services $ 789,407 Market (a) =========== (a) Purchase Order No. 01026797 to Blair Park Services, Inc., commencing November 1, 1999. SEC Order - Rule 87. Infrasource Integrated Services, Inc. PECO Energy Company Construction services $13,302,192 Market (a) (b) (c) Infrasource Integrated Services, Inc. GENCO Construction services $ 38,211 Market (d) ----------- Infrasource Integrated Services, Inc. Total $13,340,403 =========== 6 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- (a) Electric and Gas Supply Operating Agreement between Exelon Infrastructure Services of PA, Inc., and PECO Energy Company, dated October 1, 1999. SEC Order and MSA. (b) Outdoor Lighting Services Operating Agreement between Exelon Infrastructure Services of PA, Inc. and PECO Energy Company, dated September 23, 1999. SEC Order and MSA. (c) Aerial Pole Attachment Process Operating Agreement between PECO Energy Distribution Company and Exelon Infrastructure Services, dated November 1, 1999. SEC Order and MSA. (d) Purchase Order No. 01037593 with GENCO. SEC Order. VSI Group Inc. PECO Energy Company Transfer work and meter reading $16,586,841 Market (a) (a) Purchase Order No. 01014646 from PECO Energy Co. to VSI Group, commencing May 1, 1998. SEC Order and MSA. M.J. Electric, Inc. Commonwealth Edison Company Electrical maintenance services $13,271,501 Market (a) M.J. Electric, Inc. Midwest Mechanical - Exelon Enterprises Electrical maintenance services $ 1,468,726 Market (b) ----------- M.J. Electric, Inc. Total $14,740,227 =========== (a) Contracts for continuing electrical maintenance services from March 1999 through June 2001. SEC order and AIA. (b) Purchase Order No. 12512001-1251200111, initiated February 13, 2002 for engineering work. SEC Order and Rule 87. Exelon Thermal Development Inc. Northwind Aladdin LLC Administrative and general $ 3,200 Market (a) Exelon Thermal Development Inc. Northwind Aladdin LLC Plant operators $ 180,870 Cost (a) Exelon Thermal Development Inc. Northwind Las Vegas LLC Administrative and general $ 633 Cost (b) Exelon Thermal Development Inc. Northwind Windsor LLC Administrative and general $ 6,255 Cost (c) Exelon Thermal Development Inc. Exelon Thermal Technologies Inc. Administrative and general $ 10,630 Market (d) Exelon Thermal Development Inc. Unicom Power Holdings inc. Office rent $ 5,814 Cost (e) --------- 7 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- Exelon Thermal Development Inc. Total $ 207,402 ========= (a) Management Services Agreement between Unicom Thermal Development Inc. and Northwind Aladdin LLC dated January 1, 2001. SEC Order and Rule 87. (b) Management Services Agreement between Unicom Thermal Development Inc. and Northwind Las Vegas LLC dated January 1, 2001. SEC Order and Rule 87. (c) Management Services Agreement between Unicom Thermal Technologies Inc., a New Brunswick corporation, and Northwind Windsor LLC dated September 1, 1997. SEC Order and Rule 87. (d) Management Services Agreement between Unicom Thermal Development Inc. and Exelon Thermal Technologies Inc. dated March 1, 2001. SEC Order and Rule 87. (e) Office Rent Affiliate Level Arrangement between Unicom Thermal Development Inc. and Unicom Power Holdings Inc. SEC Order and Rule 87. Exelon Enterprises Company, LLC. Exelon Capital Partners, Inc. Administrative and general $ 93,797 Cost (a) Exelon Enterprises Company, LLC. Exelon Services Inc. Administrative and general $ 198,224 Cost (a) Exelon Enterprises Company, LLC. Infrasource, Inc. Administrative and general $ 68,050 Cost (a) Exelon Enterprises Company, LLC. Unicom Thermal Development Inc. Administrative and general $ 394,210 Cost (a) ---------- Exelon Enterprises Company, LLC. Total $ 754,281 ========== (a) SEC Order and Rule 87. Exelon Services, Inc Exelon Enterprises Facility Expenses $ 40,278 Cost (a) Exelon Services, Inc Exelon Energy Facility Expenses $ 177,261 Cost (b) Exelon Services, Inc. Commonwealth Edison Company Governmental Pass Through - Energy Management. $ 3,100,713 Market (c) Exelon Services, Inc. Commonwealth Edison Company Installation of security systems. $ 209,943 Market (d) 8 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- Exelon Services, Inc. Exelon Power Installation of Security System $ 218,250 Market (e) Exelon Services, Inc. Exelon Generation Company, LLC Installation of security systems. $ 107,400 Market (f) Exelon Services, Inc. PECO Energy Co Badging Supplies (Material) $ 6,189 Market (g) Exelon Services, Inc. Mueller Energy Services, Inc. Residential Gas Line installation $ 11,231 Market (h) Exelon Services , Inc Commonwealth Edison Maintenance and Construction Services $ 82,997 Market (I) Exelon Services, Inc. Exelon Generation Company, LLC Construction Services $ 136,400 Market (j) Exelon Services, Inc. Exelon Thermal Technologies Inc. Installation of environmental equipment. $ 2,940,023 Market (k) Exelon Services, Inc. Amer Gen Energy LLC - Clinton Plant Maintenance & Construction Service $ 32,838 Market (l) ----------- Total $ 7,063,522 =========== (a) Facility Expense paid by Services allocated to Enterprise. SEC Order and Rule 87. (b) Facility Expense Paid by Services Allocated to Energy. SEC Order and Rule 87. (c) Energy Management Services Agreement between Exelon Services, Inc. (formerly Unicom Energy Services Inc.) dba Federal Group and Commonwealth Edison Company dated December 29, 1998. SEC and AIA. (d) Services and Materials Agreement between Commonwealth Edison Company and Exelon Services, Inc. (formerly Access Systems, Inc.), dated March 6, 2000. SEC and AIA. (e) Services and Materials Agreement between Exelon Power and Exelon Services (dba Integrated Technology Group) Contract # 010384842 SEC Order and Rule 87. (f) Services and Materials Agreement between Exelon Business Services , Inc and Exelon Services (dba Integrated Technology Group) Contract # 00107876 SEC order. (g) Email Order from James Netzer - PECO and Exelon Services, Inc (dba Integrated Technology Group) SEC Order and MSA. (h) Project Agreement between Exelon Services, Inc. (dba Rieck Services) and Mueller Energy Service - SEC Order and Rule 87. (i) Project Agreement between Exelon Services (dba Midwest Mechanical) and Jones Lang LaSalle (agent for Commonwealth Edison Company) dated December 2, 2000. SEC and AIA. (j) Purchase Order 00018493 dated October 25, 2000, and Contract # 24910. SEC Order. (k) Purchase Order 5927 and Turnkey Construction Agreement between Exelon Thermal Technologies Inc. and Exelon Services Inc. (dba Midwest Mechanical) dated June 4, 2001. SEC Order and Rule 87. 9 of 10

Exelon Corporation - Rule 24 Certificate - Associated Company Transactions - Date filed: August 30, 2002 -------------------------------------------------------------------------------------------------------- Company Company Dollar Transfer Providing Receiving Description Amount Price Controlling Services Services Of Services Of Services Standard Agreement -------- -------- ----------- ----------- -------- --------- (l) Project Agreement between Exelon Services, Inc (dba Midwest Mechanical) as Amer Gen Energy LLC- Clinton plant SEC Order Acronyms AIA Affiliated Interests Agreement (Transactions between ComEd and associates) SEC Order Order dated October 19, 2000 approving the merger and other associate matters. MSA Mutual Services Agreement (Services between PECO and associates) 10 of 10