Seattle Municipal Tower Tenant Improvements, Vehicle Charging Stations
City of Seattle
Seattle, WA

Size: 62-story high rise office tower (1 million SF)

Wood Harbinger designed the electrical infrastructure for the electrical vehicle charging station in the parking garage.


Wood Harbinger provided the mechanical and electrical design and construction administration for the tenant improvements to relocate approximately 1,600 city employees to the Seattle Municipal Tower (formerly Key Tower). The Seattle Municipal Tower is a 62-story, one million SF high-rise office building in downtown Seattle. The City bought Seattle Municipal Tower and over a seven-year period relocated several departments into the building. The departments vary in size from under 1,000 SF to over 100,000 SF.

Wood Harbinger was the prime consultant providing electrical engineering and construction administration services for the Seattle Municipal Tower Vehicle Charging Station (VCS).

Wood Harbinger designed an electrical infrastructure to support 26 Level 2 charging stations on Level 3A in the parking garage. The infrastructure connected to the existing tenant metering center, reducing power shut downs to the building. The Seattle Municipal Tower is a critical building that can’t tolerate power shutdowns.

A new electrical space was installed in a single parking spot located on Level 3A of the parking garage. The VCS required special electrical engineering so that the VCS in the charging state didn’t affect the building distribution system for the phase I loading. To mitigate the issue, three separate services with three separate transformers and panelboards were provided.