EXELON CORPORATION

SECTION 16 FILING

POWER OF ATTORNEY



Know all by these presents, that the undersigned hereby constitutes and appoints each of

Katherine K. Combs, Bruce G. Wilson, and Scott N. Peters, signing singly, the undersigned's

true and lawful attorney-in-fact to:



(1)  execute for and on behalf of the undersigned, in the undersigned's capacity as an officer

and/or director of Exelon Corporation ("Exelon"), all reports to be filed by the undersigned

pursuant to Section 16(a) of the Securities Exchange Act of 1934 and the rules promulgated

thereunder (including Forms 3, 4, and 5 and any successor forms) (the "Section 16 Reports");



(2)  do and perform any and all acts for and on behalf of the undersigned that may be

necessary or desirable to complete and execute any such Section 16 Report, complete and

execute any amendment or amendments thereto, and timely file such report with the United

States Securities and Exchange Commission and any stock exchange or similar authority; and



(3)  take any other action of any type whatsoever in connection with the foregoing that, in the

opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required

by, the undersigned, it being understood that the documents executed by such attorney-in-fact

on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall

contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-

fact's discretion.



The undersigned hereby grants to each such attorney-in-fact full power and authority to do and

perform any and every act and thing whatsoever requisite, necessary, or proper to be done in

the exercise of any of the rights and powers herein granted, as fully to all intents and purposes

as the undersigned might or could do if personally present, with full power of substitution or

revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-

fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of

attorney and the rights and powers herein granted.  The undersigned acknowledges that the

foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not

assuming, nor is Exelon assuming, any of the undersigned's responsibilities to comply with

Section 16 of the Securities Exchange Act of 1934.



This Power of Attorney shall remain in full force and effect until the undersigned is no longer

required to file Section 16 Reports with respect to the undersigned's holdings of and

transactions in securities issued by Exelon, unless earlier revoked by the undersigned in

a signed writing delivered to the foregoing attorneys-in-fact.



IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be executed

as of this 10th day of May, 2005.







Signature:  /s/ Thomas J. Ridge



Print Name:   Thomas J. Ridge