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March Windstorm Event

We understand how difficult it is to be without power, and we appreciate your patience. Crews continued to make steady progress overnight. Small pockets of customers remain without power in King County, Greenwater, and Skykomish. The plan for today is to continue to assess damage in difficult access areas and restore power as quickly and safely as possible.

Below are updates and current estimated restoration times for hard-hit areas:

  • In Skykomish, crews continue to work on the electric system that feeds the town from the west. An additional helicopter patrol is scheduled for later in the morning. We expect to have power restored to our Skykomish customers by today, March 15 at 8 p.m.
  • In King County, crews continue to repair damage to the system throughout the morning. We still expect most customers will have their power restored by today, March 15 at 8 p.m.
  • In Greenwater, Highway 410 remains closed and the combination of deep snow and many fallen trees is preventing crews and equipment from accessing damaged electric equipment. Based on current conditions, restoration efforts could go into Monday. Estimated times of restoration will be updated in the PSE outage map as we are able to reassess for any improvement to travel and access during today's early daylight.

Estimated restoration times by region are available at pse.com/alerts. As crews are assigned to a repair job, the specific time for that outage will be added to the outage map.

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Safety first. Never touch or go within 35 feet of downed power lines because they might be energized. Call PSE at 1-888-225-5773 or 911 to report problems.

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Puget Sound Energy transmission line project

Central Pierce-Alderton 115 kV transmission reliability improvement project

Map of Central Pierce-Alderton 115 kV transmission reliability improvement project
Map of Central Pierce-Alderton 115 kV transmission reliability improvement project
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Project overview

From 2011 to 2018, PSE worked to improve electric service reliability for approximately 24,000 customers in Sumner, Bonney Lake and Orting by installing 115kV transmission lines in central Pierce County.

An existing 38-mile transmission line had previously only tied together three substations in the area, lacking the redundancy needed to reliably serve customers and increasing the possibility of outages in the area.

To strengthen the system and improve electric service reliability for our customers, we constructed three new 115 kilovolt transmission lines from points along the existing transmission system to the Alderton substation in Puyallup. The lines will were constructed in two phases:

  • Phase 1: Constructed one 115 kV transmission line along four miles of an existing water main corridor. The line runs from an interconnection point on an existing 115 kV line approximately 1,000 feet west of our existing Rhodes Lake substation in Bonney Lake to the Alderton substation.
  • Phase 2: Constructed two 115 kV transmission lines along 3.2 miles of an existing regional utility corridor. The two parallel lines run from the Alderton substation to an interconnection point on an existing 115 kV line at Myers Rd E near Highway 410.

By constructing the new lines, we segmented the existing system into three smaller, more reliable systems that can back up each other in the event of an outage on one of the lines. This project added redundancy which limits the number of affected customers during an outage and eliminating electric capacity constraints on the existing system – ultimately keeping the lights on for our customers.

This work is related to our Pierce County 230 kV project, which constructed approximately eight miles of new 230 kV transmission line from the White River substation in Bonney Lake to the Alderton substation in Puyallup. The Pierce 230 kV project was completed in late 2017. These projects work together to strengthen the overall electric grid and increase electric reliability for our customers in Sumner, Bonney Lake, Orting and central Pierce County.

Contact us

We welcome your questions and comments! Please contact:

1-888-404-8773
MajorProjects@pse.com

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