The China Zorrilla, the world's largest battery-electric ferry, has entered service across the RĆo de la Plata, carrying up to 2,100 passengers and 225 vehicles. Built in Australia, the vessel marks a major milestone in the electrification of maritime transportation.
World’s largest electric ferry enters service on the RĆo de la Plata
The world’s largest electric ferry has officially begun carrying passengers, cars and buses between Argentina and Uruguay. The China Zorrilla, a 130-meter (427-foot) vessel built by Australia’s Incat Tasmania, completed its historic inaugural voyage between Buenos Aires and Colonia, Uruguay, after being delivered to its owner, Buquebus, last month.
The crossing represents a major milestone in efforts to decarbonize the global maritime industry, demonstrating the growing potential of battery-powered vessels for large-scale commercial transportation.
How the world’s largest electric ferry works
Powered entirely by batteries, the China Zorrilla is the largest electric vessel ever built, with capacity for up to 2,100 passengers and 225 vehicles on crossings of the RĆo de la Plata.
The ferry carries more than 250 metric tons of batteries, with an energy storage system exceeding 40 megawatt-hours (MWh). The batteries supply electricity to eight electrically driven waterjets that propel the vessel.
Incat Chairman Robert Clifford said the project demonstrates that large-scale electric maritime transportation is no longer a distant prospect.
“This vessel proves that large, high-capacity commercial ships can operate on electric power, and that passengers can enjoy an entirely different experience, without the noise and exhaust fumes associated with diesel engines,” Clifford said.
Beyond building the world’s largest electric ferry, Incat has begun construction at its Hobart shipyard on three 129-meter battery-electric ferries for Danish operator Molslinjen, along with two additional 78-meter hybrid-electric vessels.
As previously reported by The Driven, Uruguayan ferry operator Buquebus initially planned to order a liquefied natural gas (LNG) vessel. However, in 2023, the company changed course, opting instead for a fully battery-powered ferry designed for zero direct emissions during operation.
The vessel’s first of four battery rooms was commissioned in October 2025. Official electric motor testing in December enabled the ship’s battery systems to be fully activated.
In January 2026, the China Zorrilla began harbor trials on Tasmania’s Derwent River, marking the first time the vessel moved under its own battery-electric propulsion.
Battery-electric ferries could become the industry standard
The global ferry fleet carries approximately 4 billion passengers annually, making the sector an important candidate for electrification.
Battery-powered crossings of up to 46 kilometers (29 miles) are already considered commercially established. But advances in battery technology could soon extend the distances electric ferries can travel.
In an interview with Bloomberg, Clifford said electric ferries could achieve a range of 100 nautical miles, approximately 185 kilometers (115 miles), within a year. Reaching 200 nautical miles could take another five years.
He expects 95% of vessels operating on shorter routes to eventually transition to battery-electric propulsion, making electrification a cornerstone of the ferry industry.
The shift has been made possible by rapid improvements in battery performance and falling equipment costs.
According to BloombergNEF, the energy density of electric vehicle battery packs has increased by more than 60% since 2010, while prices have fallen by approximately 93% over the same period.
These advances are helping make battery-powered maritime transportation increasingly practical, particularly for vessels operating predictable routes with access to charging infrastructure.
Ferries account for just 3% of shipping emissions
Global maritime greenhouse gas emissions reached 754 million metric tons of CO2 equivalent in 2025, exceeding emissions from the aviation sector and falling only slightly below Canada’s total, according to European Commission data.
Container ships and tankers carrying fuel or chemicals account for the largest share of the maritime industry’s climate impact.
Ferries, by comparison, account for only about 3% of the sector’s emissions, according to data from the Organization for Economic Cooperation and Development (OECD).
Meanwhile, international efforts to curb shipping emissions have suffered a significant setback.
Last year, the International Maritime Organization (IMO) postponed a decision on adopting a global levy on shipping emissions, largely following opposition from the Trump administration.
Unlike ferries, however, large ocean-going vessels remain poorly suited to battery-only propulsion, particularly on voyages lasting several weeks.
The weight, space requirements and energy capacity of current battery systems make full electrification far more challenging for ships traveling thousands of miles without stopping.
China expands electric cargo shipping on short-distance routes
China offers another example of how maritime electrification could advance, particularly in short-distance freight transportation.
The country is prioritizing battery-electric vessels for shorter cargo routes, while reserving methanol-powered ships for longer and more demanding journeys.
Under a national plan introduced in September, China aims to double the number of so-called new-energy vessels operating on inland waterways by 2028.
More than 1,000 vessels powered by electricity or alternative fuels are already operating across the country, according to China’s Ministry of Transport.
These include 485 fully electric vessels, most of which are passenger ships serving inland waterways.
China’s approach illustrates how battery-electric propulsion and alternative fuels could serve different segments of the shipping industry, with electrification increasingly suited to shorter, predictable routes while other low-carbon technologies address the challenges of long-distance maritime transportation.
