A spokeswoman for Duke Energy says the Tuesday night electric power outage that affected parts of Walhalla lasted two to three hours. Duke’s Sandra Magee says the culprit was a broken cross arm that affected a small circuit in the vicinity of the Walhalla Civic Auditorium. To make the repair, Duke crews had to take down the circuit two times, so for a time customers saw their power go off, return, and then go off again.