Municipal utility delivering carbon-neutral power to 900K+ residents across Seattle region
Seattle City Light operates a hydropower-heavy grid serving over 900,000 residents with a tech stack anchored in industrial control systems (SCADA, DNP3, Modbus) and legacy enterprise platforms (Oracle, AutoCAD, OSIsoft PI). Active hiring across engineering and ops roles, combined with concurrent grid modernization and CAD-to-GIS migration projects, suggests the utility is in an infrastructure refresh cycle—moving from siloed design tools toward integrated geospatial workflows while managing operational complexity around workforce scaling and hazard reduction.
Seattle City Light is a municipal utility operated by the City of Seattle, generating and distributing electricity to over 900,000 residents and businesses in the Seattle metropolitan area. The utility's power generation is primarily hydroelectric and carbon-free. Core operational focus areas include grid modernization, capital equipment deployment, and infrastructure upgrades (including the Boundary Dam project and ongoing system rebuild work). The organization manages critical control systems (SCADA, DNP3-based devices, OSIsoft historian) that monitor and automate grid operations, paired with traditional engineering and CAD workflows for design and asset management.
SCADA, DNP3, Modbus, OSIsoft PI, AutoCAD, Civil 3D, PostgreSQL, Oracle Database, and Linux systems. The stack reflects industrial control and legacy enterprise systems typical of utility operations.
Grid modernization, the Boundary Dam hydroelectric project, system rebuild, CAD-to-GIS integration, AutoCAD rollout, capital equipment installation, and document management system consolidation (Accurent Meridian).
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