SecProbe.io

CORRESP
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EXELON CORPORATION
  10 South Dearborn Street, 37th Floor

Chicago, Illinois 60680

May 31,
2005

VIA FACSIMILE AND EDGAR

Securities
and Exchange Commission

450 Fifth Street, N.W.

Washington, D.C. 20549

Re:

Exelon Corporation

Registration Statement on Form S-4 (File No. 333-122704)

Ladies
and Gentlemen:

        Pursuant
to Rule 461 promulgated under the Securities Act of 1933, as amended, Exelon Corporation, a Pennsylvania corporation (the "Company"), hereby requests that its
Registration Statement on Form S-4 (File No. 333-122704) be declared effective at 4:00 p.m., Washington, D.C. time, or as soon thereafter as practicable on May 31, 2005.

        The
Company acknowledges that as of the date hereof:

•should
the Securities and Exchange Commission (the "Commission") or the staff, acting pursuant to delegated authority, declare the Registration Statement effective, it does
not foreclose the Commission from taking any action with respect to the Registration Statement;

•the
action of the Commission or the staff, acting pursuant to delegated authority, in declaring the Registration Statement effective, does not relieve the Company from its
full responsibility for the adequacy and accuracy of the disclosure in the Registration Statement; and

•the
Company may not assert this action or staff comments as a defense in any proceeding initiated by the Commission or any person under the federal securities laws of the
United States.

Very truly yours,

EXELON CORPORATION

By: /s/  BRUCE G. WILSON

Name: Bruce G. Wilson

Title:    Associate General Counsel