Item 8.01. Other Events.

On February 27, 2009, Exelon Corporation (Exelon), Exelon Xchange Corporation (Xchange) and PECO Energy Company (PECO) submitted to the Pennsylvania Public Utility Commission (PAPUC) an Application for Certificates of Public Convenience Evidencing Approval of the Transfer of Ultimate Control (PA Application) of NRG Energy Center Pittsburgh LLC and NRG Energy Center Harrisburg LLC (Pennsylvania Energy Centers), each an indirect wholly-owned subsidiary of NRG Energy, Inc. (NRG), and, under an alternative potential corporate structure, of a possible change of control of PECO. The PAPUC regulates the Pennsylvania Energy Centers as utilities and must approve the change in control that would result from Exelon's acquisition of NRG. A copy of the PA Application is available and accessible at the PAPUC website at
http://www.puc.state.pa.us/general/search.aspx using docket numbers A-2009-2093057, A-2009-2093058 and A-2009-2093059.

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Important Information

This filing relates to the offer (Offer) by Exelon through its direct wholly-owned subsidiary, Xchange, to exchange each issued and outstanding share of common stock (NRG shares) of NRG for 0.485 of a share of Exelon common stock. This filing is for informational purposes only and does not constitute an offer to exchange, or a solicitation of an offer to exchange, NRG shares, nor is it a substitute for the Tender Offer Statement on Schedule TO or the Prospectus/Offer to Exchange included in the Registration Statement on Form S-4 (Reg. No. 333-155278) (including the Letter of Transmittal and related documents and as amended from time to time, Exchange Offer Documents) previously filed by Exelon and Xchange with the Securities and Exchange Commission (SEC). The Offer is made only through the Exchange Offer Documents. Investors and security holders are urged to read these documents and other relevant materials as they become available, because they will contain important information.

Exelon expects to file a proxy statement on Schedule 14A and other relevant documents with the SEC in connection with the solicitation of proxies (NRG Meeting Proxy Statement) for the 2009 annual meeting of NRG stockholders (NRG Meeting). Exelon will also file a proxy statement on Schedule 14A and other relevant documents with the SEC in connection with its solicitation of proxies for a meeting of Exelon shareholders (Exelon Meeting) to be called in order to approve the issuance of shares of Exelon common stock pursuant to the Offer (Exelon Meeting Proxy Statement). Investors and security holders are urged to read the NRG Meeting Proxy Statement and the Exelon Meeting Proxy Statement and other relevant materials as they become available, because they will contain important information.

Investors and security holders can obtain copies of the materials described above (and all other related documents filed with the SEC) at no charge on the SEC's website: www.sec.gov. Copies can also be obtained at no charge by directing a request for such materials to Innisfree M&A Incorporated, 501 Madison Avenue, 20th Floor, New York, New York 10022, toll free at 1-877-750-9501. Investors and security holders may also read and copy any reports, statements and other information filed by Exelon, Xchange or NRG with the SEC, at the SEC public reference room at 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 or visit the SEC's website for further information on its public reference room.

Exelon, Xchange and the individuals to be nominated by Exelon for election to NRG's Board of Directors will be participants in the solicitation of proxies from NRG stockholders for the NRG Meeting or any adjournment or postponement thereof. Exelon and Xchange will be participants in the solicitation of proxies from Exelon shareholders for the Exelon Meeting or any adjournment or postponement thereof. In addition, certain directors and executive officers of Exelon and Xchange may solicit proxies for the Exelon Meeting and the NRG Meeting. Information about Exelon and Exelon's directors and executive officers is available in Exelon's proxy statement, dated March 20, 2008, filed with the SEC in connection with Exelon's 2008 annual meeting of shareholders. Information about Xchange and Xchange's directors and executive officers is available in Schedule II to the Prospectus/Offer to Exchange. Information about any other participants will be included in the NRG Meeting Proxy Statement or the Exelon Meeting Proxy Statement, as applicable.

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Forward Looking Statements

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

This communication includes forward-looking statements. There are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements made herein. The factors that could cause actual results to differ materially from these forward-looking statements include the Registrants' ability to achieve the synergies contemplated by the proposed transaction, the Registrants' ability to promptly and effectively integrate the businesses of NRG and the Registrants, and the timing to consummate the proposed transaction and obtain required regulatory approvals as well as those discussed in (1) the Exchange Offer Documents; (2) Exelon's 2008 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: Note 18; and (3) other factors discussed in filings with the Securities and Exchange Commission by Exelon. Readers are cautioned not to place undue reliance on these forward-looking statements, which apply only as of the date of this communication. The Registrants do not undertake any obligation to publicly release any revision to its forward-looking statements to reflect events or circumstances after the date of this communication, except as required by law.

Statements made in connection with the exchange offer are not subject to the safe harbor protections provided to forward-looking statements under the Private Securities Litigation Reform Act of 1995.

All information in this communication concerning NRG, including its business, operations, and financial results, was obtained from public sources. While Exelon has no knowledge that any such information is inaccurate or incomplete, Exelon has not had the opportunity to verify any of that information.

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