Severe storms Thursday night knocked out power across the region and PECO officials tell NBC10 some may remain in the dark until Sunday.
Initially PECO reported 138,000 customers were without power in Philadelphia and Chester, Bucks, Delaware and Montgomery counties Thursday.
Crews restored power to nearly all those without service, but more than 13,000 are still waiting for the lights to turn back on a day later.
By 5p.m. Friday, PECO reported 6,007 customers without power in Chester County; 2,959 in Bucks County; 1,973 in Montgomery County; 1,915 in Delaware County; and 573 in Philadelphia.