The entire Wood River Valley and south as far as Shoshone, west to Fairfield and east to Carey lost power at 2:40 p.m.
Lynette Berriochoa, Idaho Power communications leader, said the outage could have been a deliberate act of vandalism.
“After 13 hours of repairs overnight to a damaged line northeast of Shoshone, Idaho Power crews discovered that the broken wire that fell to the ground may have been weakened by a gunshot,” Berriochoa said. “It’s rare, but we have seen this kind of unfortunate vandalism before. It’s very costly and a huge inconvenience.”