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VIDEO: Danish e-ferry sets new world distance record

Written by

Nick Blenkey

A world record was set after returning from an IEA conference

The pioneering Danish e-ferry Ellen set another record by becoming the longest-range all-electric ferry in the world by traveling 50 nautical miles (92 kilometers) on a single battery charge.

In service since 2019, the vessel operates between the Danish islands of Ærø and Fynshav. Designed by Jens Kristensen Consulting Naval Architects and built by Søby Værft shipyard, the ferry is just under 60 meters long and around 13 meters wide. It operates at speeds of 12 to 12.5 knots and is capable of carrying 198 passengers during the summer months, with this capacity dropping to 147 during the winter. It can also carry 31 cars or five trucks on its open deck.

With a battery capacity of 4.3 MWh, it is the first electric ferry to not have an emergency generator on board.

The e-ferry is the result of a project supported by the European Horizon 2020 program which aimed to achieve objectives including the ability to cover distances of up to 22 nautical miles in the Danish part of the Baltic Sea which were, at the time only operated by conventional diesel-powered vessels.

The EllenThe latest record was set after the ship was showcased at the International Energy Agency’s (IEA) seventh annual global conference on energy efficiency, held this year in Sønderborg, Denmark. . The 50 nautical mile record was set on his return from the conference.

Achieved on a single battery charge, it is the longest recorded distance traveled by an all-electric ferry capable of carrying passengers and vehicles to date anywhere in the world.


The Ellen e-ferry is powered by electric drive from Danfoss’ Editron division, which is smaller and lighter than comparable systems and offers lower operating costs and zero emissions.

Henrik Hagbarth Mikkelsen, a lecturer at the Marstal Naval Academy, Denmark, who helped specify the ferry’s technical solutions during its design phase, was on board for the trip:

“The 92 kilometer journey on a single battery charge is the longest planned distance for an electric ferry capable of carrying both passengers and vehicles to date, anywhere in the world,” he said. “We are talking about a clear file. On normal daily trips, the ferry travels 22 nautical miles, or 40 kilometers, from port to port before recharging.

Kimmo Rauma, Vice President of Danfoss’ Editron Division, said, “Ellen is a great example of the future of electric transportation. It’s cleaner, greener and more efficient than its fossil-fueled competitors. The electrification of shipping is a clear way to reduce greenhouse gas emissions. And Danfoss has the solutions to build new electric ferries and retrofit existing ferries to electrify them with the potential to reduce carbon emissions worldwide.

Danfoss Editron plans to submit the all-electric ferry world record to Guinness World of Records.

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