ARLINGTON, VA – Pepco Energy Services, a subsidiary of Pepco Holdings, Inc. (NYSE: POM) and a leader in renewable electricity initiatives, has signed agreements to supply electricity generated from renewable sources to the U.S. Departments of Transportation, Energy, Interior, Agriculture, Office of Personnel Management, National Archives and Inter-American Development Bank, all located in Washington, D.C.

Under an existing contract with the General Services Administration, Pepco Energy Services will supply over 122 million kilowatt-hours of renewable power in 2007. The green energy supplied under these contracts comes from multiple nationally sourced renewable resources and will be certified through the Environmental Resources Trust and Green-e.

“These agencies are clearly demonstrating their commitment to a cleaner environment,” said John Huffman, President and Chief Operating Officer of Pepco Energy Services.  “We are proud to be able to offer these agencies with affordable alternative energy resources.”

About Pepco Energy Services

Pepco Energy Services, Inc. is a wholly owned subsidiary of Pepco Holdings, Inc. (NYSE: POM) and a leader in providing commercial, institutional, government and industrial customers with competitive electricity and natural gas supply and energy efficiency services.  Visit www.pepcoenergy.com for more information.

Pepco Energy Services, Inc. is not the same company as Potomac Electric Power Company, and prices and services of Pepco Energy Services, Inc. are not set by the Public Service Commission.

Information contained in this news release may include forward-looking statements which should be considered in light of the risks inherent in the business of Pepco Holdings, Inc. and its subsidiaries, as discussed in public documents filed with the Securities and Exchange Commission.

Contact:  Kim Price 703.253.1839