First-Quarter 2012 Earnings Review

WASHINGTON, D.C. - Pepco Holdings, Inc. (NYSE: POM) has scheduled an earnings conference call for May 4, 2012, at 11 a.m. ET. First-quarter 2012 earnings will be released before the market opens on Friday, May 4, 2012.

Investors, members of the media and other interested persons may access the conference call on the Internet at http://www.pepcoholdings.com/investors or by calling 1 -800-638-4930 before 10:55 a.m. The pass code for the call is 98364747 . International callers may access the call by dialing 1- 617-614-3944 , using the same pass code 98364747 . An on-demand replay will be available for seven days following the call. To hear the replay, dial 1- 888-286-8010 and enter pass code 75089656 . International callers may access the replay by dialing 1- 617-801-6888 and entering the same pass code 75089656. An audio archive will be available at PHI's website, http://www.pepcoholdings.com/investors .

Note: If any non-GAAP financial information (as defined by the Securities and Exchange Commission in Regulation G and excluding information furnished in a Form 8-K) is disclosed during the quarterly earnings conference call, a presentation of the most directly comparable GAAP measure and a reconciliation of the differences will be available at http://www.pepcoholdings.com/investors promptly after the conclusion of the conference call.

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About PHI : Pepco Holdings, Inc. (NYSE: POM) 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.