A fallen tree branch knocked out power in Belmont Hills and surrounding neighborhoods for more than an hour Monday morning, a PECO spokesman said.
The branch dislodged wires on a Jefferson Street utility pole about 9:12 a.m., PECO spokesman Ben Armstrong told Patch.
The utility estimated 1,263 customers were affected. Of those, 341 lost power for only a minute, while 532 others (including ) had power restored at 9:52 a.m. Classes continued during the outage.
The rest had power restored about 10:30 a.m. after final repairs were made, as did the traffic light at Woodbine Avenue and Conshohocken State Road in Penn Valley.