Utility: S. Anchorage power outage caused by substation communication issue

bbrasch@adn.comDecember 9, 2013 

UPDATE, 4:08 p.m.:

Crews have determined that the almost hour-long power outage in South Anchorage was caused by two substations not communicating correctly, said Sarah Wiggers, Chugach Electric spokeswoman.

A crew was working on the Retherford substation, off of Old Seward Highway between Dimond Boulevard and O'Malley Road, when a relay tripped a switch that was already open at the Sand Lake substation, she said.

"It was quite a little chain reaction," Wiggers said.

UPDATE, 11:25 a.m.:

All power was restored at 11:15 a.m., but crews are working at the Sand Lake substation to see why power went down for nearly an hour, said a Chugach Electric spokeswoman.

Original story:

About 6,300 South Anchorage customers have been without power since 10:18 a.m. Monday, according to Chugach Electric Association.

The outage affects those served by the Sand Lake substation, said Sarah Wiggers, Chugach Electric spokeswoman.

She said two crews are investigating the problem but the cause is still unknown.

The outage area is stretches from Minnesota Drive to Lake Otis Parkway and from O'Malley Road to 64th Avenue, she said.

The outage also cut power to several traffic lights on Dimond Boulevard, she said. The Municipality of Anchorage reported in a Twitter post that traffic on Dimond was moving "very slowly" and recommended use of alternate routes.

CHECK BACK FOR UPDATES ON THIS DEVELOPING STORY.

Reach Benjamin Brasch at bbrasch@adn.com or 257-4349. Twitter: twitter.com/ben_brasch

 

Anchorage Daily News is pleased to provide this opportunity to share information, experiences and observations about what's in the news. Some of the comments may be reprinted elsewhere in the site or in the newspaper. We encourage lively, open debate on the issues of the day, and ask that you refrain from profanity, hate speech, personal comments and remarks that are off point. Thank you for taking the time to offer your thoughts.

Commenting FAQs | Terms of Service