Filed Pursuant to Rule 433
Registration Statement No. 333-133966
Dated March 16, 2007
$300,000,000 FIRST MORTGAGE 5.90% BONDS, SERIES 103, DUE MARCH 15, 2036
FINAL TERMS AND CONDITIONS
Issuer: |
| Commonwealth Edison Company |
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Ratings: |
| Baa2 (Review for Possible Downgrade) (Moody’s) |
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Principal Amount: |
| $300,000,000 |
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Title of Securities: |
| First Mortgage 5.90% Bonds, Series 103, due March 15, 2036 |
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Legal Format: |
| SEC-Registered (Registration No. 333-133966) |
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Trade Date: |
| March 16, 2007 |
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Settlement Date: |
| March 22, 2007 |
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Maturity Date: |
| March 15, 2036 |
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Issue Price: |
| Variable Price Reoffer, plus accrued interest from March 15, 2007 |
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Coupon: |
| 5.90% |
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Benchmark Treasury: |
| 4.50% due February 15, 2036 |
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Spread to Benchmark: |
| Variable |
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Interest Payment Dates: |
| Semi-annually on March 15 and September 15, commencing on |
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Redemption Provisions: |
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CUSIP: |
| 202795 HK 9 |
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Book-Running Manager: |
| Citigroup Global Markets Inc. |
The issuer has filed a registration statement (including a prospectus) with the U.S. Securities and Exchange Commission (SEC) for this offering. Before you invest, you should read the prospectus for this offering in that registration statement, and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by searching the SEC online database (EDGAR®) at www.sec.gov. Alternatively, you may obtain a copy of the prospectus from Citigroup Global Markets Inc. by calling 1-877-858-5407.