Three faces of Green
By spring 2018, the final design will be ready and orders can be taken by Green City Ferries who will promote and sell BB Green and charging stations.
The changes in design and equipment from AiriEl will be
- New lighter and more powerful electric propulsion motors
- New light-weight LTO batteries developed by Echandia Marine and Toshiba
- Reduced bow height to enable bow landing
- Better 360 view for the captain
We are in the dawn of a dramatic shift of technology in the ferry industry. Diesel is being banned in cities and emission free electric ferries will undoubtedly be the future. However, it is not that easy. A hundred years ago petrol stations were a necessity for the development of the car industry. Today, there is a need for charging facilities for cars but ferries will follow. BB Green is dependent on charging infrastructure and it requires 1500 kW to recharge in less than 15 minutes. This might be an obstacle in some cities. However, do not despair. There is a solution. HB Green is the hybrid version of the vessel. With two 440 kW diesel generators and a 70 kWh LTO battery HB Green will still be a good alternative. Energy savings will be 50 % and so will emission. In harbour areas HB Green will operate only on batteries. Built as a serial hybrid, the diesel engines can easily be exchanged for a fuel cell stack and turned into the third version – the FC Green. FC Green is a complement to BB Green – used for longer distances. We expect the first FC Greens to be built in 2020 when we foresee that the technology has stabilized and the classification rules are in place. As for BB Green there is a dependency of charging facilities which will affect the speed of introduction. Starting with the Hybrid is therefore a good strategic choice when it comes to longer distances.