Zeem Solutions will construct a commercial electric vehicle (EV) charging depot to support heavy-duty electric trucks near Seattle-Tacoma International Airport (SeaTac), enabled by a $5.12 million grant from the Northwest Seaport Alliance (NWSA).
The grant will subsidize the purchase of 19 Class 8 electric drayage trucks by six local fleet operators, aligning EV deployment costs with those of traditional diesel models.
Designed to support zero-emission freight between the Ports of Seattle and Tacoma and regional distribution hubs, the SeaTac Depot will initially energize six 400 kW dc fast charging ports, capable of supporting quick-turn charging and overnight dwell times.
The depot will be built near a new I-5 exit and Pacific Highway (SR-99), offering proximity to major warehouse clusters and consistent drayage routes.
Zeem’s solution consolidates key operational needs, including charging, parking, security, fleet check-in, and maintenance, into a single location with 24-hour on-site staff. The site will accommodate mixed fleet operations across light, medium, and heavy-duty commercial vehicles, with capacity planned for 70 overnight vehicles and charging throughput for up to 250 vehicles per day.
The Class 8 electric trucks supported by this grant will be domiciled at the SeaTac Depot and operated by small, local, and diverse fleets, selected for their proximity to port routes and readiness for near-term electrification. The high-power charging architecture is designed to support daily duty cycles of port drayage and warehouse distribution, allowing for fast energy replenishment and reduced downtime.
This deployment marks a scalable template for drayage fleet electrification across major port corridors. It demonstrates how site planning, high-power infrastructure, and capital support can align to meet the technical demands of heavy-duty fleet operations.
Funding for the project was awarded through the Washington State Department of Transportation’s Port Electrification grant program, made possible by the state’s Climate Commitment Act.
Filed Under: Charging, Technology News