Exelon and Pepco Holdings File for Reconsideration of Their Merger

Pepco Holdings Inc. (NYSE: POM) and Exelon Corporation (NYSE: EXC) today have filed a petition for reconsideration of their merger with the Public Service Commission of the District of Columbia. The companies are working with the District of Columbia government to reach a settlement agreement.

“We remain convinced our merger offers significant benefits to customers and the District, and we continue working to complete it,” said Chris Crane, president and CEO of Exelon. “Since the Public Service Commission explained why it didn’t approve the merger last month, we’ve worked to learn what’s most important to the District – and we are responding.”

The District of Columbia government today issued a statement confirming that it is engaged in substantive discussions with the companies on a settlement agreement. It added that any settlement agreement would be presented in a new application to the PSC for review, public comment and final determination.

Joseph Rigby, chairman, president and CEO of Pepco Holdings, said, “We look forward to completing discussions with the District that will allow for a stronger Pepco to provide improved reliability along with the other significant benefits our merger will deliver to the District.”

About Exelon Corporation

Exelon Corporation (NYSE: EXC) is the nation’s leading competitive energy provider, with 2014 revenues of approximately $27.4 billion. Headquartered in Chicago, Exelon does business in 48 states, the District of Columbia and Canada. Exelon is one of the largest competitive U.S. power generators, with approximately 32,000 megawatts of owned capacity comprising one of the nation’s cleanest and lowest-cost power generation fleets. The company’s Constellation business unit provides energy products and services to more than 2.5 million residential, public sector and business customers, including more than two-thirds of the Fortune 100. Exelon’s utilities deliver electricity and natural gas to more than 7.8 million customers in central Maryland (BGE), northern Illinois (ComEd) and southeastern Pennsylvania (PECO). Follow Exelon on Twitter @Exelon.

About Pepco Holdings Inc.

Pepco Holdings Inc. is one of the largest energy delivery companies in the Mid-Atlantic region, serving about 2 million customers in Delaware, the District of Columbia, Maryland and New Jersey. PHI subsidiaries Pepco, Delmarva Power and Atlantic City Electric provide regulated electricity service; Delmarva Power also provides natural gas service. PHI also provides energy efficiency and renewable energy services through Pepco Energy Services. For more information, visit online: www.pepcoholdings.com.

Cautionary Statements Regarding Forward-Looking Information

Except for the historical information contained herein, certain of the matters discussed in this communication constitute “forward-looking statements” within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934, both as amended by the Private Securities Litigation Reform Act of 1995. Words such as “may,” “might,” “will,” “should,” “could,” “anticipate,” “estimate,” “expect,” “predict,” “project,” “future,” “potential,” “intend,” “seek to,” “plan,” “assume,” “believe,” “target,” “forecast,” “goal,” “objective,” “continue” or the negative of such terms or other variations thereof and words and terms of similar substance used in connection with any discussion of future plans, actions, or events identify forward-looking statements. These forward-looking statements include, but are not limited to, statements regarding benefits of the proposed merger, integration plans and expected synergies, the expected timing of completion of the transaction, anticipated future financial and operating performance and results, including estimates for growth. These statements are based on the current expectations of management of Exelon Corporation (Exelon) and Pepco Holdings, Inc. (PHI), as applicable. There are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements included in this communication. For example, (1) the uncertainty surrounding reconsideration of the denial of the Merger application by the DC Public Service Commission may delay the merger or cause the companies to abandon the merger; (2) conditions to the closing of the merger may not be satisfied; (3) problems may arise in successfully integrating the businesses of the companies, which may result in the combined company not operating as effectively and efficiently as expected; (4) the combined company may be unable to achieve cost-cutting synergies or it may take longer than expected to achieve those synergies; (5) the merger may involve unexpected costs, unexpected liabilities or unexpected delays, or the effects of purchase accounting may be different from the companies’ expectations; (6) the credit ratings of the combined company or its subsidiaries may be different from what the companies expect; (7) the businesses of the companies may suffer as a result of uncertainty surrounding the merger; (8) the companies may not realize the values expected to be obtained for properties expected or required to be sold; (9) the industry may be subject to future regulatory or legislative actions that could adversely affect the companies; and (10) the companies may be adversely affected by other economic, business, and/or competitive factors. Other unknown or unpredictable factors could also have material adverse effects on future results, performance or achievements of the combined company. Therefore, forward-looking statements are not guarantees or assurances of future performance, and actual results could differ materially from those indicated by the forward-looking statements. Discussions of some of these other important factors and assumptions are contained in Exelon’s and PHI’s respective filings with the Securities and Exchange Commission (SEC), and available at the SEC’s website at www.sec.gov, including: (1) Exelon’s 2013 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 22; (2) Exelon’s Second Quarter 2015 Quarterly Report on Form 10-Q in (a) Part II, Other Information, ITEM 1A. Risk Factors; (b) Part 1, Financial Information, ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations and (c) Part I, Financial Information, ITEM 1. Financial Statements: Note 19; (3) the definitive proxy statement that PHI filed with the SEC on August 12, 2014 and mailed to its stockholders in connection with the proposed merger (as supplemented by PHI’s Form 8-K filed with the SEC on September 12, 2014); (4) PHI’s 2014 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 15; and (5) PHI’s Second Quarter 2015 Quarterly Report on Form 10-Q in (a) PART I, ITEM 1. Financial Statements, (b) PART I, ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations. In light of these risks, uncertainties, assumptions and factors, the forward-looking events discussed in this communication may not occur. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this communication. Neither Exelon nor PHI undertakes any obligation to publicly release any revision to its forward-looking statements to reflect events or circumstances after the date of this communication. New factors emerge from time to time, and it is not possible for Exelon or PHI to predict all such factors. Furthermore, it may not be possible to assess the impact of any such factor on Exelon’s or PHI’s respective businesses or the extent to which any factor, or combination of factors, may cause results to differ materially from those contained in any forward-looking statement. Any specific factors that may be provided should not be construed as exhaustive.

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