Maryland regulators want Pepco to explain why the lights keep going out -- even when the weather isn't stormy.
Maryland's Public Service Commission has called a hearing into the reliability of Pepco, a utility that has been criticized in recent weeks over electrical power outages that have lasted for days after storms.
In an order made public late Thursday, the commission ordered Pepco officials to appear at the hearing, set for 9:30 a.m. Tuesday in Baltimore.
The order said the hearing is to get answers from Pepco about its performance during and after severe weather.
Late Thursday, 60,000 Pepco customers were without power after a thunderstorm passed through the area in the morning.
The PSC also said it will examine the utility's storm preparedness.
Pepco serves customers in D.C. and Prince George's and Montgomery County in Maryland.