8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): December 6, 2006

Commission File	Exact Name of Registrant as Specified in Its Charter; State of Incorporation;	IRS Employer
Number	Address of Principal Executive Offices; and Telephone Number	Identification Number
1-16169	EXELON CORPORATION	23-2990190
	(a Pennsylvania corporation)
	10 South Dearborn Street — 37th Floor
	P.O. Box 805379
	Chicago, Illinois 60680-5379
	(312) 394-7398
1-1839	COMMONWEALTH EDISON COMPANY	36-0938600
	(an Illinois corporation)
	440 South LaSalle Street
	Chicago, Illinois 60605-1028
	(312) 394-4321

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

TABLE OF CONTENTS

	Section 8—Other Events
	Item 8.01 Other Events.
	Section 9 — Financial Statements and Exhibits
	Item 9.01 Financial Statements and Exhibits.
SIGNATURES

Section 8—Other Events

Item 8.01 Other Events.

As previously reported, the Illinois Commerce Commission (ICC) recently released the results of the descending clock auction competitive bidding process held on September 5 to 8, 2006 to supply Commonwealth Edison Company’s (ComEd) entire retail load beginning in 2007. On December 6, 2006, the Auction Manager and the ICC Staff submitted a public report reflecting the number of tranches won by each supplier of each specific product auctioned. A copy of the full report is available on the ICC’s website, http://www.icc.illinois.gov/docs/en/Post_Auction_Public_Report_Staff.pdf. ComEd issued a news release related to the public report on December 7, 2006. The news release is attached to this Current Report on Form 8-K as Exhibit 99.

Following is information related to ComEd’s load:

Section	Fixed Price
Customer Group	Small to Medium						Large
Product		B 17		B 29		B 41		A 17
Price ($/MWH)	$	63.96	$	64.00	$	63.33	$	90.12
Bidder/Tranches Won
Ameren Energy Marketing Company
American Electric Power Service Corporation		3						5
Connectiv Energy Supply, Inc.				6		1		3
Constellation Energy Commodities Group, Inc.				3				22
DTE Energy Trading, Inc.		3		4				3
Dynegy Power Marketing, Inc.
Edison Mission Marketing & Trading, Inc.		19		22
Energy America, LLC		4
Exelon Generation Co., LLC				38		89		1
FPL Energy Power Marketing		6						9
J. Aron & Company		15		10
J. P. Morgan Ventures Energy Corporation		27		4		1
Morgan Stanley Capital Group, Inc.		6						37
PPL EnergyPlus, LLC		6		6		2
Sempra Energy Trading Corporation								8
WPS Energy Services, Inc.		3
Sum of Tranches Won		92		93		93		88

* * * * *

This combined Form 8-K is being furnished separately by Exelon Corporation (Exelon) and ComEd (Registrants). Information contained herein relating to any individual registrant has been furnished by such registrant on its own behalf. No registrant makes any representation as to information relating to any other registrant.

Forward-Looking Statements
This Current Report includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, that are subject to risks and uncertainties. The factors that could cause actual results to differ materially from these forward-looking statements include those discussed herein as well as those discussed in (1) Exelon’s 2005 Annual Report on Form 10-K in (a) ITEM 1A. Risk Factors, (b) ITEM 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations and (c) ITEM 8. Financial Statements and Supplementary Data: Exelon-Note 20 and ComEd-Note 17; (2) Exelon’s Third Quarter 2006 Quarterly Report on Form 10-Q in (a) Part II, Other Information, ITEM 1A. Risk Factors and (b) Part I, Financial Information, ITEM 1. Financial Statements: Note 13; and (3) other factors discussed in filings with the SEC by the Registrants. Readers are cautioned not to place undue reliance on these forward-looking statements, which apply only as of the date of this Current Report. None of the Registrants undertakes any obligation to publicly release any revision to its forward-looking statements to reflect events or circumstances after the date of this Current Report.

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Section 9 — Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.	Description
99	News release of Commonwealth Edison Company

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EXELON CORPORATION
 

/s/ John F. Young  

John F. Young 

Executive Vice President, Finance and Markets
and Chief Financial Officer
Exelon Corporation 

COMMONWEALTH EDISON COMPANY
 

/s/ Robert K. McDonald  

Senior Vice President, Chief Financial Officer, 

Treasurer and Chief Risk Officer
Commonwealth Edison Company 

December 7, 2006

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EX-99

Exhibit 99

Contact: Judy Rader	FOR IMMEDIATE RELEASE
ComEd Media Relations
312-394-3500

Electric Competition is Working
ICC staff report concludes Illinois auction was competitive and fair

CHICAGO (Dec. 7, 2006) — The Illinois auction, which set the price for electricity for ComEd customers beginning in 2007, was conducted in a transparent, equitable, and highly professional manner, according to a public report issued this week by the Illinois Commerce Commission staff.

The report provides details on how much each winning bidder won in the auction. A total of 21 bidders registered to compete in the statewide auction, and 16 of those bidders were successful. For ComEd, 14 suppliers won various shares of ComEd’s electricity supply requirements, which total over 18,000 MW. ComEd has signed wholesale supply contracts with each of the 14 suppliers.

“The ICC staff’s report shows that the Illinois auction was competitive, and that electric rates in 2007 will be below what they were in 1997,” said Frank M. Clark, chairman and CEO, ComEd. “The Illinois auction clearly attracted a lot of competitors and ensured that ComEd customers got the lowest available market price for electricity.”

In its report, the ICC staff and their expert advisor, the Boston Pacific Company, said they had “full access” to all elements of the auction and that it was conducted in a manner consistent with the Commission order and the auction rules. The ICC staff recommended continuing to use the auction to procure power for residential and small business customers and provided suggestions to improve the auction in the future.

The ICC staff’s report said, even with a 22 percent rate increase, ComEd’s 2007 rates will still be 3 percent below what they were in 1997. When adjusted for inflation, ComEd’s 2007 rates are actually 22 percent lower than in 1997, according to the report. That’s because, due to inflation, $1 today is the equivalent to $1.23 in 1997.

“This report reminds us that electricity remains a great value for Illinois customers,” Clark said. “The report notes that the general inflation in all energy costs in the Midwest has risen more than 67 percent since 1997. In contrast, ComEd customers will experience a far lower increase—22 percent—after a nine-year rate reduction and freeze that has already saved consumers more than $4 billion.”

Electricity supply costs represent approximately two-thirds of the total electric bill for ComEd residential customers. For an average residential customer with a $60 monthly bill, the 2007

ComEd
Page 2 of 2

increase would be about $13.20 per month, or 44 cents a day. The increase would not take effect until Jan. 2, 2007. The electricity supply prices are locked in until June 2008.

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Commonwealth Edison Company (ComEd) is a unit of Chicago-based Exelon Corporation
(NYSE: EXC), one of the nation’s largest electric utilities with approximately 5.2 million
customers and more than $15 billion in annual revenues. ComEd provides service to
approximately 3.7 million customers across Northern Illinois, or 70 percent of the state’s
population.