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Seattle City Light

Public electric utility in Washington state, U.S.

Seattle City Light is the public utility providing electricity to Seattle, Washington, in the United States, and parts of its metropolitan area, including all of Shoreline, nearly all of Lake Forest Park, and parts of unincorporated King County, Burien, Normandy Park, SeaTac, Renton, and Tukwila. Seattle City Light is the 10th largest public utility in the United States and the first municipal utility in the US to own and operate a hydroelectric facility.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1905Founded1

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Seattle City Light south service center, 1998
Photo: Seattle Municipal Archives from Seattle, WA, CC BY 2.0, via Wikimedia Commons3

Seattle City Light is the public utility providing electricity to Seattle, Washington, in the United States, and parts of its metropolitan area, including all of Shoreline, nearly all of Lake Forest Park, and parts of unincorporated King County, Burien, Normandy Park, SeaTac, Renton, and Tukwila. Seattle City Light is the 10th largest public utility in the United States and the first municipal utility in the US to own and operate a hydroelectric facility.2

Corporate structure

Seattle City Light sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Seattle City Light Seattle
    • Diablo Subsidiary ยท Whatcom County, United States

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Subsidiaries and ownership

Subsidiaries

  • Diablo

From Wikidata.1

Timeline

  1. 1905Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2
  3. 3