The world's largest all-electric ferry, named E-ferry Ellen, made its first commercial trip, connecting the ports of Søby and Fynshav, on the islands of Aerø and Als, in southern Denmark. The ship, capable of carrying approximately 30 vehicles and 200 passengers, is powered by a battery system with an capacity of 4.3 MWh provided by Swiss company Leclanché SA.

E-ferry Ellen is expected to be fully operational within a few weeks. E-ferry is part of the Danish Natura project, which aims to provide environmentally friendly transport for local residents. This project was initiated in 2015 and was funded by the European Union through the Horizon 2020 and Innovation Program.

Anil Srivastava, CEO of Leclanché, said, "We are very proud to provide a specifically designed unique lithium-ion battery system to this ferry, the precursor to a new era in the commercial marine sector. With its 4.3 MWh capacity, the E-ferry represents a new milestone in commercial marine propulsion."

The battery system uses high-energy graphite/nickel-manganese cobalt (G-NMC) lithium-ion cells with unique safety features, including a bi-cellular laminated design and ceramic separators. Leclanché designs and engineers Class Type Approved and Certified Marine Rack Systems (MRS) including fire prevention and extinguishing systems. The project has received the DNV-GL Type Approval Certificate and the DNV-GL Product Certificate. The Swiss company develops and manufactures its own G-NMC lithium oxide and lithium titanate oxide (LTO) cells.

The battery and powertrain systems in the E-ferry vessel are parallel and redundant, and enhance the safety and reliability of the E-ferry vessel. In addition, the E-ferry features integrated battery and transmission systems that offer enhanced operating efficiency.