Fall at Skagit Hydroelectric Project, Photo by Kevin Lidtka
Seattle City Light LARRY WEIS, General Manager and CEO
Denny Substation Project
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Program Overview

Investing in the distribution and transmission of electricity to maintain reliability and meet future needs.

Electrical substations transform electricity from higher to lower voltage before distributing it to consumers. Seattle City Light's Denny Substation Program consists of the following components:
  1. A new electrical substation on Denny Way in South Lake Union's historic Cascade neighborhood
  2. A new power distribution network to serve South Lake Union and the Denny Triangle.
City Light will also construct a new inductor at the Broad Street Substation to help balance the regional transmission system.

Background


Seattle is one of the fastest growing cities in the nation, and South Lake Union and Denny Triangle are among its fastest growing neighborhoods. New and expanding companies and institutions have created jobs and spurred demand for retail services and housing in this area, transforming it into a dynamic hub of activity. The City has already made a number of investments to keep pace with this growth and now is making a major upgrade to the electrical system to meet the accelerating power needs of current and anticipated consumers.

Seattle City Light will construct a new electrical substation, its first and largest in 30 years, near the intersection of Denny Way and Stewart Street. An underground distribution network and transmission line will also be built to carry power to the substation and deliver it to customers.

To realize the vision of a substation that fits with its vibrant urban surroundings, the utility conducted a two-year design process that included numerous public meetings, close consultation with stakeholders, and dozens of presentations to neighborhood groups and organizations, yielding hundreds of public comments.

This extensive community involvement effort has resulted in a one-of-a-kind substation design that meets the needs of the utility and brings significant amenities to the neighborhood.

This vital and exciting program will support the city's rapid growth, help fuel the local economy, and enhance the neighborhood with new parks and open spaces, an off-leash area, community meeting spaces, and public art. It will also provide improved reliability and system flexibility, benefiting customers both in and beyond the project area.


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Project Hotline:
(206) 257-2142

Email Address:
SCL_DennySub@seattle.gov

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    700 5th Avenue
    Suite 3200
    P.O. Box 34023
    Seattle, WA 98124-4023


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