IDAHO FALLS, Idaho (KIFI/KIDK/KXPI) - The cause of a substation fire that happened in Idaho Falls and left thousands without power.
Rocky Mountain Power said pieces of equipment had caught fire.
A spokesperson with Rocky Mountain Power said sometimes equipment just wears out.
"This equipment, when it does catch fire, it sounds like a shot gun going off and so a lot of people will report it sounding like an explosion," Paul Murphy said.
Murphy said all power was restored by 5:10 p.m. Saturday.