ComEd 2006 Annual Report Download - page 404

SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Chicago and State of Illinois on the 13th day of February, 2007.
COMMONWEALTH EDISON COMPANY
By: /s/ F RANK M. C LARK
Name: Frank M. Clark
Title: Chairman and Chief Executive Officer
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed
by the following persons on behalf of the registrant and in the capacities indicated on the 13th day of
February, 2006.
Signature Title
/s/ F RANK M. C LARK Chairman and Chief Executive Officer
Frank M. Clark (Principal Executive Officer)
/s/ J. B ARRY M ITCHELL President
J. Barry Mitchell
/s/ R OBERT K. M C D ONALD
Robert K. McDonald
Senior Vice President, Chief Financial Officer,
Treasurer and Chief Risk Officer (Principal
Financial Officer)
/s/ M ATTHEW R. G ALVANONI
Matthew R. Galvanoni
Vice President and Controller (Principal
Accounting Officer)
This annual report has also been signed below by Frank M. Clark, Attorney-in-Fact, on behalf of
the following Directors on the date indicated:
Sue L. Gin John W. Rogers, Jr.
Edgar D. Jannotta Richard L .Thomas
By: /s/ F RANK M. C LARK
February 13, 2007
Name: Frank M. Clark