Terminal 3 and 4 Shore Power
Terminal 3 and 4 Shore Power
Shimmick delivered shore-to-ship electrical infrastructure at Terminal 3 and Terminal 4 of the Port of Tacoma, supporting EPA-recommended environmental initiatives to reduce vessel emissions. The project included the installation of medium voltage (13.8kV to 6.6kV) power systems, substations, transformers, switchgear, walk-in enclosures, and 7.2kV shore power receptacles. Additional scope included trenching and wharf modifications, the installation of a shore power vault on Pier 3, and extensive coordination with Tacoma Power for metering, testing, and commissioning. Shimmick maintained a flexible 24-hour work window throughout construction to accommodate active port operations.
Project Details
Location
Tacoma, WA
Amount
$10.7M
Delivery Method
Bid-Build
Client Name
Port of Tacoma
Duration
2022 – 2025
Project Highlights & Unique Aspects
- Substation Gear Procurement: Approximately 25% of project value relates to long-lead substation equipment procurement.
- Operational Flexibility: Maintained a flexible 24-hour schedule to avoid impacts to port operations.
- Environmental Mandate: Project initiated to support EPA directives to cut marine vessel emissions.
Shimmick's Role & Expertise Bridge Construction
Shimmick was instrumental in delivering critical electrification infrastructure through:
- Medium Voltage and Shore Power Systems: Installed 2000 LF of duct bank, transformers, switchgear, and receptacles to deliver shore power at both terminals.
- Site and Civil Work: Completed wharf trenching, vault installation, and site modifications to integrate power systems into existing marine infrastructure.
- Contaminated Soil Management: Mitigated off-haul volumes through pre-excavation soil testing, minimizing stockpiling and associated environmental impacts.
Coordination & Community Impact
- Enables docked vessels to connect to shore power and reduce emissions.
- Supports long-term environmental and air quality improvements at the Port of Tacoma.
- Provides scalable electrical infrastructure aligned with future marine sustainability goals.
Shimmick is proud to have supported the Port of Tacoma’s clean energy goals by delivering reliable, future-ready electrical infrastructure at Terminals 3 and 4.