DBRS Rates ComEd’s Issue of $700 Million First Mortgage Bonds at BBB, Trend Stable

DBRS has today assigned a rating of BBB with a Stable trend to the proposed $700 million, 5.80% First Mortgage Bonds (FMBs) Series 108 issue of Commonwealth Edison Company (ComEd). The FMBs will mature on March 15, 2018.

The FMBs will rank equally with all of ComEd’s other bonds now or hereafter outstanding under the mortgage. Proceeds from the new issue will be used to repay borrowings made under the revolving credit agreement, to refinance maturing debt and for general corporate purposes.

The issue is expected to settle on March 27, 2008.

ComEd is a subsidiary of Exelon Corporation.

Notes:
All figures are in U.S. dollars unless otherwise noted.
This rating is based on public information.