The world’s largest all-electric ferry completed its first voyage with passengers last week in Denmark.

The Ellen sailed between the southern Danish ports of Fynshav to Soby, on the island of Aero.

The e-ferry is capable of carrying 30 vehicles and 200 passengers and is powered by a battery “with an unprecedented capacity” of 4.3MWh, according to Swiss battery maker Lechanché which provided the system.