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NEW YORK — Just off the chaotic coastline of Lower Manhattan sits Governors Island, a tranquil oasis of tree-lined paths that the city is transforming into a hub for climate change research. Getting there, however, has long meant riding on a diesel-burning ferry that spews soot and planet-warming gases as it zips across the New York Harbor.
A new ferry now provides visitors a much cleaner way to reach the 172-acre island.
Harbor Charger, a hybrid-electric vessel, entered into service last week. The boat is the first of its kind in New York state — and it’s one of only a handful of hybrid-electric ferries to operate nationwide. On Aug. 12, elected officials and other leaders joined the ferry’s inaugural cruise around the harbor, roasting in the late-summer heat on the outside car deck.
“We’re proud to be charting the course for sustainable maritime transportation,” said Clare Newman, president and CEO of the Trust for Governors Island, a nonprofit created by New York City to redevelop the island. Later, Newman smashed a champagne bottle on the stern to christen the new vessel.
The $33 million Harbor Charger operates like an incredibly robust Toyota Prius. The boat’s diesel-fueled generators charge up the 870-kilowatt-hour battery system, allowing the vessel to run partly or fully on electricity during the eight-minute trip to or from the island. The ferry will eventually plug in directly to a shoreside rapid-charging station, using the generators only as emergency backup, but the charging infrastructure hasn’t yet been built.
Harbor Charger, which can fit up to 1,200 people and 30 vehicles, will replace its 69-year-old predecessor named Lt. Samuel S. Coursen. The older ferry guzzles an average of 420 gallons of diesel per day, so switching to the hybrid vessel is expected to save the city over $200,000 per year in fuel costs, according to the Trust for Governors Island.
The new boat will also significantly reduce air pollution and slash carbon dioxide emissions by nearly 600 tons per year when running in hybrid mode. Once it can plug in, the vessel will curb CO2 by an additional 800 tons.
Nationwide, many of the nearly 620 ferries plying waterways rely on decades-old, inefficient diesel engines, making them some of the largest emitters among commercial harbor craft. The vessels also typically operate around densely populated communities, exposing people to health-harming pollutants such as particulate matter and nitrogen oxide emissions.
“Diesel ferries are an important part of our transportation system, but continuing to spew the fumes that diesel leaves and … burn that fuel in the middle of our cities does not make any sense,” New York state Sen. Brian Kavanagh (D) said from the gently humming Harbor Charger. Skyscrapers towered in the distance as helicopters and seaplanes soared noisily overhead.
The newly built Harbor Charger is the second hybrid-electric ferry to launch in the U.S. this summer. In July, Washington State Ferries began running the renovated Wenatchee — a 27-year-old diesel ferry that underwent a $96 million conversion to become a Prius of the seas. The giant ferry can carry nearly 2,500 passengers and over 200 vehicles on a route between Seattle and Bainbridge Island.
Siemens Energy outfitted both ferries with its hybrid technology. The German manufacturer recently equipped a new hybrid-electric ferry in Galveston, Texas, and is in the process of retrofitting another vessel there. It’s also working to deliver two similar vessels to Louisiana’s department of transportation later this year, said Ed Schwarz, the company’s head of marine solutions sales in North America.
“We really think that this is the direction the industry is going,” Schwarz said in an interview as the Harbor Charger cruised past the Statue of Liberty.
For now, the industry will have to chart that course without key federal funding. The GOP megalaw that President Donald Trump signed last month rescinds millions of dollars in unobligated grant money from the 2022 Inflation Reduction Act to help local governments and others slash diesel pollution from ports by modernizing and electrifying equipment.
New York City itself received a $7.5 million federal grant in 2023 to fund the installation of Harbor Charger’s shoreside charging infrastructure, which is currently in the design phase. U.S. Rep. Dan Goldman (D-NY), who helped to secure the grant, lamented the loss of federal subsidies for projects like this one. “It is a very fraught time for our cleantech and our renewable energy,” he said during the launch ceremony.
Still, Goldman added, Harbor Charger “is such a critical example of what the future can be and will be.”
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