But it's all intentional, so PECO can make repairs to the substation in North Philadelphia that was damaged by fire last week.
Crews are working to get those repairs done before this week's storm hits.
The substation sustained extensive damage in a fire Tuesday at the plant on Westmoreland Street.
PECO shut off the electricity Sunday night to thousands of people, so that those repairs could be made.
The outage was supposed to be over by 9 p.m., but PECO says its crews are behind schedule.
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