New Dutch hybrid ferry

A new double-ended ferry under construction in northern Spain will employ several different energy sources and also be using a battery. The ferry will serve the Dutch island of Texel and will be named Texelstroom.
Published Apr 22 2015 — by Maritime Battery Forum

The ferry will run on compressed natural gas (CNG), or on ultra low-sulphur diesel fuel, and will have a 1.6MWh battery bank integrated in its power system. The ferry will also be fitted with solar panels to reduce the use of hydrocarbon fuels.

Texelstroom is being built at the Sestao yard of LaNaval (Construcciones Navales del Norte), and is to be delivered by the end of 2015. The ferry is planned to enter into service spring 2016, between Den Helder and Texel and can carry 1750 passengers and 350 cars.

Read more here.

From the Motorship Journal:

Peak shaving through the use of battery power will reduce overall fuel consumption, and is pertinent to the duty cycle of such a ferry, with its large fluctuations in energy requirements in the berthed, berthing, manoeuvring, accelerating and transit phases.

The energy storage system nominated for Texelstroom has been supplied by Corvus Energy, and comprises 252 of the Canadian specialist’s AT6500 48V lithium ion modules. The 1.6MWh battery capacity will be used to increase efficiency and for back-up power. As well as peak shaving, the large battery reserve means that the ferry could be operated on battery power alone in case of emergency. For a very high proportion of the time, it is anticipated that the ship will only need to have one main genset running.

A propulsion calculation matrix was developed by C-Job, and this was used to determine main generator power requirements, combined with battery capacity, during normal sailing.

The energy storage arrangements have enabled the designers to specify smaller main generators, as the batteries can be used to provide short power-up and power-down capabilities. The technology is seen as an effective solution to the hybridisation of commercial CNG-powered vessels, supporting performance by conferring consistent power and reliability.

As an integral part of the advanced energy management system, more than 700m2 of solar panels are fitted on the uppermost deck. Under optimum conditions, the array will deliver 150kWh. While this is less than 10% of the total battery capacity, it is estimated that the photovoltaic panels will cover 40-50% of the hotel load. The electrical requirement at night, when the vessel is in standby mode in the harbour of Texel, can be met from the island’s grid. Some of this electrical power can be stored in the batteries.

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