WSF selects hybrid electric propulsion systems for newbuilds

With the first two ships scheduled for delivery from Eastern Shipbuilding Group in 2030 and 2031, the contract also includes an option for a third ferry. WSF has previously announced plans to build up to 16 ships by the end of 2040, as part of a ferry electrification programme targeting lower emissions.

ABB will supply and integrate end-to-end systems including power distribution, advanced energy management and marine automation for the ferries that will include the largest ship batteries ever installed in the US. Based on ABB Onboard DC Grid and the PEMS power and energy management system, the hybrid-electric propulsion systems will achieve substantially lower fuel consumption and operating costs than existing WSF vessels serving the same routes.

Each ship’s 13.2-MWh energy storage system will also enable all-electric, emissions-free operations on short routes and in port.

The order builds on ABB’s early-stage involvement as the propulsion single source vendor in the WSF project, announced in 2024, with the contract amended to reflect the confirmed initial shipbuilding contract for two ships plus one option.

“The Washington State Ferries System Electrification Program is the largest of its kind in the United States, and ABB’s continued involvement, secured through this new order, helps mitigate risk and ensure on-time vessel delivery,” said Washington State Ferries system electrification programme administrator David Sowers.

“ABB’s state-of-the-art hybrid-electric propulsion systems demonstrate the company’s proven expertise in complex system integration. These systems will substantially reduce emissions and enhance operational reliability across the WSF fleet, advancing our long-term modernisation objectives and helping people and businesses thrive throughout the Puget Sound.”

The ABB systems on board will also reduce vessel noise and vibrations, increasing comfort for passengers and crew while minimising the impact to local wildlife and coastal communities.

“This contract marks another important step in our collaboration with Washington State Ferries,” said ABB Marine & Ports division vice president Americas, Bruce Strupp. “It reflects the trust placed in ABB’s hybrid-electric propulsion technology and our ability to deliver reliable, scalable solutions that support WSF’s long-term sustainability goals. We’re proud to continue helping WSF modernise its fleet to maintain reliable service and reduce environmental impact.”