A failed circuit switcher at an Alaska Electric Light & Power substation in west Juneau resulted in a localized power outage Tuesday morning.
At about 9:30 a.m. the circuit switcher began to fail, creating a low-voltage situation for some customers, said Gayle Wood, spokesperson for the utility.
"Some customers may not have seen a problem at all, and other customers would have noticed lights dimming or motors sounding like they were slowing down," she said.
When the switcher failed entirely it knocked out power for about 3,600 customers, she said.
The area affected was the area served by that substation, including Douglas Island and the Highlands area above the Juneau-Douglas High School. The outage lasted from 9:34 a.m. to 10:03, she said.
The outage was initially difficult to diagnose, she said, because the switch failed internally, but looked from the outside like it was working.