5 a.m. OUTAGE UPDATE; Power Restoration Efforts Under Way; Record Outages Recorded on Pepco System

For Immediate Release
September 19, 2003, 5:00 a.m.

5 a.m. OUTAGE UPDATE

Power Restoration Efforts Under Way
Record Outages Recorded on Pepco System

Overnight, Pepco was able to restore service to some customers, but some additional outages occurred as high winds continued.

As of 5 a.m., the following outages are reported on the Pepco system:

District of Columbia: 81,000
Montgomery County: 221,000
Prince George’s County: 163,000
Total: 450,000 customers

Pepco personnel are conducting a damage assessment to determine how long the restoration process will take.

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About Pepco: For more than 100 years, Pepco has served the people of the Washington metropolitan area with clean, reliable and low-cost electricity. Pepco, a wholly owned subsidiary of Pepco Holdings, Inc. (NYSE: POM), provides electricity transmission and distribution services to more than 700,000 customers in the District of Columbia and major portions of Prince George`s and Montgomery County in Maryland.