Editor's note: Article updated at 2:52 p.m. to update expected power restoration time to 4:30 p.m.
More than 1,500 customers in the Indiana area are without power. The cause of the outage is pending investigation.
Weather could be to blame for the outage. A flash flood watch is in effect for the area until midnight Monday, the National Weather Service reports.
Power is expected to be restored around 4:30 p.m., according to Penelec's website.
Some residents in Homer City were also without power, the site said.