Commercial rate guide for Seattle City Light — City of Seattle, Washington and portions of Shoreline, Lake Forest Park, Burien, SeaTac, and Tukwila
Small general service (SGS), medium general service (MGS), and large general service (LGS) rate schedules. Demand charges on MGS and LGS. Network and transmission charges. Among the lowest commercial rates due to hydroelectric generation.
Rising
4.5% rate increase effective January 2026 approved by Seattle City Council for i
4.5% rate increase effective January 2026 approved by Seattle City Council for infrastructure and fish passage investments
Property managers with Seattle City Light accounts frequently encounter these billing challenges:
Network service billing for large commercial in downtown Seattle
Demand charges during winter heating peaks (hydroelectric system)
Rate schedule qualification changes during building retrofits
City Light vs. Puget Sound Energy service territory confusion
BPA (Bonneville Power Administration) cost pass-throughs
The utility is the sole provider in this service territory.
Seattle City Light is a municipal utility. No competitive supply choice. Rates set by Seattle City Council. Power primarily from hydroelectric.
Strategic plan update with climate commitment costs under review by City Council; Skagit River relicensing cost projections under development
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