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

June 19, 2006
Date of Report (Date of earliest event reported)

Commission File Number	Exact Name of Registrant as Specified in Its Charter; State of Incorporation; Address of Principal Executive Offices; and Telephone Number	IRS Employer Identification Number
1-16169	EXELON CORPORATION (a Pennsylvania corporation) 10 South Dearborn Street — 37th Floor P.O. Box 805379 Chicago, Illinois 60680-5379 (312) 394-7398	23-2990190
1-1839	COMMONWEALTH EDISON COMPANY (an Illinois corporation) 440 South LaSalle Street Chicago, Illinois 60605-1028 (312) 394-4321	36-0938600
000-16844	PECO ENERGY COMPANY (a Pennsylvania corporation) P.O. Box 8699 2301 Market Street Philadelphia, Pennsylvania 19101-8699 (215) 841-4000	23-0970240
333-85496	EXELON GENERATION COMPANY, LLC (a Pennsylvania limited liability company) 300 Exelon Way Kennett Square, Pennsylvania 19348 (610) 765-6900	23-3064219

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
EXHIBIT INDEX

Section 8 — Other Events
Item 8.01. Other Events

On June 19, 2006, Exelon Corporation (Exelon) and Public Service Enterprise Group Incorporated (PSEG) issued a joint press release concerning the status of their proposed merger. Attached as Exhibit 99 to this Current Report on Form 8-K is a copy of the joint press release.

* * * * *

This combined Form 8-K is being furnished separately by Exelon, Commonwealth Edison Company (ComEd), PECO Energy Company (PECO) and Exelon Generation Company, LLC (Generation) (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.

Except for the historical information contained herein, certain of the matters discussed in this Report are 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 the forward-looking statements made by a registrant include those factors discussed herein, as well as the items discussed in (a) the Registrants’ 2005 Annual Report on Form 10-K—ITEM 1A. Risk Factors, (b) the Registrants’ 2005 Annual Report on Form 10-K—ITEM 8. Financial Statements and Supplementary Data: Exelon—Note 20, ComEd—Note 17, PECO—Note 15 and Generation—Note 17, and (c) 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 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 Report.

Section 9—Financial Statements and Exhibits
Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.	Description
99	Joint Press Release

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

PECO ENERGY COMPANY

EXELON GENERATION COMPANY, LLC

/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

Robert K. McDonald
Senior Vice President, Chief Financial Officer, Treasurer
and Chief Risk Officer

Commonwealth Edison Company

June 19, 2006

EXHIBIT INDEX

Exhibit No.	Description
99	Joint Press Release

EX-99

Exhibit 99

News Release

Contacts:
Exelon
Investor Relations: Joyce Carson (312) 394-3441
Media Relations: Kellie Szabo (312) 394-3071

PSEG
Investor Relations: Sue Carson (973) 430-6565
Media Relations: Paul Rosengren (973) 430-5911
 

Exelon and PSEG Provide Merger Update

CHICAGO and NEWARK (June 19, 2006) — Exelon Corporation (NYSE: EXC) and Public Service Enterprise Group Incorporated (NYSE: PEG) announced today that they are continuing their efforts to obtain approval of their proposed merger before the U.S. Department of Justice (DOJ) and New Jersey Board of Public Utilities (NJBPU).

Under the Exelon/PSEG Merger Agreement, either party has the option to terminate the transaction without penalty at any time after June 20, 2006. However, both companies will continue their efforts to obtain the necessary regulatory approvals. Neither Exelon nor PSEG has taken any action to terminate the Merger Agreement or extend the June 20, 2006 date in the Merger Agreement.

“We are moving ahead to get our last two remaining regulatory approvals,” said John W. Rowe, chairman, president, and CEO of Exelon. “We continue to make progress in our discussions with the Department of Justice, and we are involved in ongoing settlement discussions in New Jersey. We are trying to successfully complete these discussions as soon as possible. It obviously has taken longer than expected to get through the regulatory approval process.”

DOJ is reviewing issues related to competition. Rowe said, “We are working with DOJ to reach a settlement that addresses its concerns. We made an enhanced offer several weeks ago in New Jersey to demonstrate the significant benefits the merger will bring to the state. Although our settlement proposals make the economics of the transaction somewhat thinner, our board recently re-evaluated the transaction, and has agreed that we should proceed on the assumption that we can reach reasonable settlements at DOJ and in New Jersey. On that basis, we continue to believe that this merger will create substantial long-term value for our shareholders. Higher energy prices have raised the values of Exelon and PSEG about proportionately since the merger was announced in December 2004. And in our view, the strategic value of the merger remains compelling. Of course, our board will make an independent assessment and evaluation of the merger after the terms and conditions of all regulatory requirements are known.”

“We at PSEG also continue to believe the merger makes economic and strategic sense,” said Jim Ferland, chairman and CEO of PSEG. “Like Exelon, our board recently reviewed the transaction. In

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addition to providing value to our shareholders through a larger, more diverse company, we believe the transaction offers substantial benefits to our customers. We believe it is important to try to gain a reasonable settlement with DOJ and a reasonable regulatory approval in New Jersey to achieve these benefits.”

The final decision on whether to proceed with the merger will rest with the boards of both Exelon and PSEG after the terms and conditions of regulatory requirements are known. Closing is anticipated in the third quarter upon completion of all required regulatory actions.

Exelon and PSEG expect to hold a conference call for investors following the next major development in regulatory proceedings.

Corporate Profiles
Exelon Corporation is one of the nation’s largest electric utilities with approximately 5.2 million customers and more than $15 billion in annual revenues. The company has one of the industry’s largest portfolios of electricity generation capacity, with a nationwide reach and strong positions in the Midwest and Mid-Atlantic. Exelon distributes electricity to approximately 5.2 million customers in northern Illinois and Pennsylvania and natural gas to more than 470,000 customers in southeastern Pennsylvania. Exelon is headquartered in Chicago and trades on the NYSE under the ticker EXC.

Public Service Enterprise Group (PSEG) (NYSE:PEG) is a publicly traded diversified energy company with annual revenues of more than $12 billion, and three principal subsidiaries: PSEG Power, one of the largest independent power producers in the U.S.; Public Service Electric and Gas Company (PSE&G), New Jersey’s oldest and largest energy distribution utility company; and, PSEG Energy Holdings, a holding company for other non-regulated energy businesses.

Forward-Looking Statements
This release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, which are subject to risks and uncertainties. The factors that could cause actual results to differ materially from these forward-looking statements include risks associated with the proposed merger of Exelon and PSEG that are included in the joint proxy statement/prospectus that Exelon filed with the SEC pursuant to Rule 424(b)(3) on June 3, 2005 (Registration No. 333-122704). Readers are cautioned not to place undue reliance on these forward-looking statements, which apply only as of the date of this release. Exelon and PSEG do not undertake any obligation to publicly release any revision to the forward-looking statements to reflect events or circumstances after the date of this release.

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