Old Number 6 just outside the Skagit General Store in Newhalem. Photo by Barb Haight, the Skagit General Store Manager.
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Denny Substation Project
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Denny Substation Project Update

Project Status

Seattle City Light will construct a new electrical substation (Denny Substation) and an underground distribution network (Denny Network) to accomplish a major electrical system upgrade for the city of Seattle.

Puget Sound Energy Utility Relocation Work

In advance of City Light’s Denny Network construction, Puget Sound Energy (PSE) is relocating segments of its existing natural gas lines in South Lake Union and the Denny Triangle. Utility relocation began in November 2015 and will occur at approximately 15 locations through March 2016.

Associated impacts include:
  • Weekday work hours 7:30 a.m. to 4 p.m.
  • Half-block to full-block construction zones
  • Some weekend and evening work
  • Lane restrictions
  • Possible parking and loading restrictions
  • Some increased noise and truck activity
  • Possible short interruptions of gas service
No impacts to electric service are expected.

Denny Network Construction Update

In early December City Light hosted both an in-person open house and an online open house that introduced the Denny Network project’s contractor and presented scheduling and construction information to the public. For up-to date project information view a recording of the online meeting.

The network will be installed underground in the South Lake Union and Denny Triangle neighborhoods, with construction scheduled to begin in February 2016. Learn more about the sequence of work, schedule, and what to expect once construction begins by visiting our Denny Network construction page.

Last Updated: January 2016

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    P.O. Box 34023
    Seattle, WA 98124-4023

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