City Light Completes Cable Injection in Lake Forest Park

Earlier this fall, Seattle City Light completed its silicone cable injection work in Lake Forest Park. The project began in September 2016 to enhance the reliability and extend the life of aging underground electrical cables in parts of Lake Forest Park by injecting them with silicone.

City Light’s contractor, Novinium, tested and where possible, injected about a mile of underground cable with silicone to fill cracks in the cable insulation to prevent outages. This work extends the life of the cable for an additional 25 years and improves electrical reliability.

Example photo of typical cable injection work.

Approximately 50 percent (half a mile) of the total underground cable from this project was suited to injection. The remaining 50 percent of cable was not suited for injection and will be replaced at a later time.

Past cable injection projects in areas such as Shoreline and Seattle’s Capitol Hill neighborhood have succeeded in extending the lifespan of aging cables and improving reliability at a lower cost than replacement. A 2011 cost comparison showed that the average cost of cable injection was $25, compared to $248 for cable replacement.

For more information about this project and other City Light construction projects, please visit our website:

City Light to Upgrade Electrical Cable in Lake Forest Park

Starting in early September 2016, Seattle City Light will be upgrading the aging electrical cable in parts of Lake Forest Park to help improve the electrical reliability in the area. City Light’s contractor, Novinium, will test and where possible, inject underground cables with silicone to fill cracks in the cable insulation to prevent outages. If cables are not suited for injection, they will be replaced at a later time.

Map of the construction work areas (from NW 195th St to NE 205th St)

Map of the construction work areas (from NE 185th St to NE 195th St)

The contractor, Novinium will be working for a total of 13 days in the month of September. Daily work hours are scheduled from 8:30 a.m. to 4:30 p.m. Evening and weekend work is not planned.

One maintenance outage is anticipated for this work. All affected customers will be notified on the Thursday before the following week’s outage. The outage date and time will be specified on the notification.

Traffic and parking impacts are expected in the immediate area during work hours. Flaggers will be used where needed on residential streets and crews will be careful to maintain access to driveways.

For more information, please contact John Likes, Electrical Service Representative at (206) 615-0608 or

Visit the City Light construction website for the latest updates on this project:

Crews Restore Power to Most Customers Affected By Storm

Seattle City Light crews continue to work around the clock to restore service to customers affected by Saturday’s windstorm. At the peak of the storm, 58,000 customers were without power. By comparison, approximately 1,600 customers were out of power this afternoon.

In City Light’s service territory, the north end was the largest hit area, especially Lake Forest Park. This area experienced widespread damage from fallen trees, branches, leaves and other debris.

Crews restored power to the main feeder lines that provide power to thousands of customers and are now focused on the smaller power lines (lateral) that carry electricity to several hundreds of people at a time. This is often the most time consuming and more detailed work.

Seattle City Light expects storm-related outages to be fully restored by mid-day on Tuesday, Sept. 1.

To stay informed on the latest outage information, please visit:

Seattle City Light is the 10th largest public electric utility in the United States. It has some of the lowest cost customer rates of any urban utility, providing reliable, renewable and environmentally responsible power to nearly 1 million Seattle area residents. City Light has been greenhouse gas neutral since 2005, the first electric utility in the nation to achieve that distinction.

Crews Make Progress on Outage Restorations, Focus on Lake Forest Park, Push for Monday Finish

Seattle City Light crews continued to make progress Sunday to restore service to customers affected by Saturday’s windstorm, reducing the number of homes and businesses without power to under 7,000.

Strong winds with gusts up to 60 miles per hour uprooted trees and broke off large limbs, damaging power lines and utility poles throughout the Puget Sound area. About 80,000 City Light customers have had power interrupted at some point since the start of the storm with about 58,000 out of service at the peak of the outages. Tacoma Power, Snohomish PUD and Puget Sound Energy also responded to large numbers of outages in their service territories.

For City Light, the north end of its service territory was hit hardest, especially Lake Forest Park.

Crews working in Lake Forest Park throughout the weekend found multiple areas of damage from large, fallen trees on each of the main feeder lines delivering electricity to the city, requiring more extensive repairs to restore service. Additional damage is expected on the smaller, neighborhood lateral lines that carry power to several hundred people each.

Given that damage, additional crews have been assigned to the Lake Forest Park work. They expect to complete work on the main feeder lines this evening and start work on lateral lines. If customers see the power returning to their neighborhood and they are still without service, they are asked to call (206) 684-3000 to report that they are still out.

Work on the lateral lines will continue through the night into Monday morning before crews can focus on individual service lines. Full restoration for all customers is anticipated sometime Monday afternoon.



Repair Crews Responding to Outages Affecting About 46,000 Homes, Businesses

As of 5:30 p.m., crews had restored power to approximately 12,000 customers, down from the peak of 58,000, when strong winds hit early Saturday afternoon. There are numerous trees down in the region. Large outages are affecting North Seattle, Lake Forest Park, and Shoreline. Customers can get updated numbers and outage information online at