Port of Baltimore claims a first with battery-electric railcar mover

Zero-emissions Zephir supplants diesel equipment

Screencap from video showing Zephir at work at the Wallenius Wilhelmsen terminal. (Photo: Port of Baltimore video)

The Port of Baltimore’s Wallenius Wilhelmsen terminal rolled out an electric railcar mover in what the port says is a first for the contemporary U.S. maritime industry.

The zero-emissions LOK 16.150E, manufactured by Marmon Rail’s Zephir division of Italy, features an 80-volt rechargeable battery system with onboard charger powering two 40-kilowatt, alternating current, brushless motors. At just over 21 feet in length, the 63,900-pound Zephir has drawbar pull of 39,500 pound-force.

In a promotional video, the port said the Zephir is expected to reduce diesel fuel consumption by 16,000 gallons annually, removing 13.87 tons of nitrous oxide and 182 tons of carbon dioxide emissions.

“At this terminal, the asset will be used to help with intermodal cargo exchange,” said Matt Stahl, Mid-Atlantic terminal general manager, Wallenius Wilhelmsen, in the video. “So coming to and from the port via rail, and to and from the ocean line, as well.”

Zephir will also reduce switching costs, Stahl said.

“We can do it with our own asset, without any assistance.”

Ro-ro specialist Wallenius Wilhelmsen is based in Sweden and Norway.

In a coincidental case of what’s old is new again, the Zephir harks back to battery-powered railcar movers built by the Pennsylvania Railroad in 1912, rubber-tired “locomotives” used to switch freight cars around the narrow streets of the Baltimore waterfront on track curvature too tight for standard motive power.

The PRR classified operators as “chauffeurs,” instead of costlier locomotive engineers.

The Pennsylvania Railroad’s battery-electric railcar mover. (Photo: Trains/Collection of John H. Wright)

Find more articles by Stuart Chirls here.

Related coverage:

What shippers should know about ocean carrier alliance changes in 2025

Texas Gulf Coast ports see year-over-year gains in freight volumes

Asia-US ocean rates trend lower but Trump tariff threats shadow trade

Upcoming FreightWaves Events
AI

Supply Chain AI Symposium

Past the hype. Join operators, founders, and enterprise leaders figuring out how to deploy AI in supply chain.

July 15, 2026
The Old Post • Chicago, IL
Register Now
FreightTech

F3: Future of Freight Festival

Industry-defining keynotes, rapid-fire technology demos, and industry leaders networking in experiences across Chattanooga - plus the inaugural F3 Awards Dinner featuring the FreightTech and Shipper of Choice reveals.

October 27, 2026 – October 28, 2026
The Signal at Chattanooga Choo Choo • Chattanooga, TN
Register Now
AI Supply Chain AI Symposium Jul 15 • The Old Post • Chicago, IL

Past the hype. Join operators, founders, and enterprise leaders figuring out how to deploy AI in supply chain.

The Old Post • Chicago, IL Register Now
FreightTech F3: Future of Freight Festival Oct 27 – Oct 28 • The Signal at Chattanooga Choo Choo • Chattanooga, TN

Industry-defining keynotes, rapid-fire technology demos, and industry leaders networking in experiences across Chattanooga - plus the inaugural F3 Awards Dinner featuring the FreightTech and Shipper of Choice reveals.

The Signal at Chattanooga Choo Choo • Chattanooga, TN Register Now

Stuart Chirls

Stuart Chirls is a journalist who has covered the full breadth of railroads, intermodal, container shipping, ports, supply chain and logistics for Railway Age, the Journal of Commerce and IANA. He has also staffed at S&P, McGraw-Hill, United Business Media, Advance Media, Tribune Co., The New York Times Co., and worked in supply chain with BASF, the world's largest chemical producer. Reach him at stuartchirls@firecrown.com.