17 | 10 | 2018


Movitz electric ferry 

General information:

Island (Region, Province, Country):

10 million  ( 1,5 million in stockholm)

Budget / cost of the project:
Approx: 200 000 euro

Project objectives:
Retrofit an existing ferry in stockholm with Nilar battery energy storage system and enchandia electric drive

Project description of activities and specific interventions:
A passenger boat to be converted to electric drive. This boat will operate the Stockholm Archipelago during summers. Echandia will equip the boat with its unique propulsion and Nilar will supply energy storage together with BMS (battery management system) .

Capacity:                                               180 kWh
Amount strings:                                  34 pcs
Amount of batteries per string:       4 pcs
System voltage:                                   480 VDC
System filed bus interface:               Modbus TPC/IP
Charge:                                                 DC/DC Echandia.

Safety was  imperative. With up to 100
passengers onboard at the same time, the batteries had to be explosion-proof. therefor the Safe and robust Nilar advanced NiMH battery solution was a key component

Public outreach, education and awareness efforts and results:

Pictures and more info can be found here: http://www.greencityferries.com/demofleet/movitz/
Today, the Movitz ferry transports commuters to work and home again across the
Stockholm waterways safely and sustainably. The previous 250 kW diesel engine –
which had an annual footprint of 130 tons of CO2 , 1.5 tons of NOx, and 80 kg of diesel
particles – now has no-emission electrical engines. And, thanks to the supercharge
capability of the Nilar batteries, the ferry can run for 60 minutes after just 10 min of

Economic value added and how calculated:
Fuelsaving/ environment saving:
Instead of a 250kW diesel engine using 50 m3 of diesel per year, omitting 130 tons of CO2, 1,5 tons of NOX and 80 kg of particles, Movitz has two 125 kW electric motors placed outside the hull in so called PODs. The boat is powered by super-advanced Nickel-Metal-Hydrid (NiMH) 180 kWh batteries from the Swedish company Nilar. NiMH batteries deliver high power instantly and can be charged very quickly. It will need around 90 kW to cruise at 9 knots.

Ecological and social project outcomes:
Instead of a 250kW diesel engine using 50 m3 of diesel per year, omitting 130 tons of CO2, 1,5 tons of NOX and 80 kg of particles, Movitz has two 125 kW electric motors placed outside the hull in so called PODs. The boat is powered by super-advanced Nickel-Metal-Hydrid (NiMH) 180 kWh batteries from the Swedish company Nilar. NiMH batteries deliver high power instantly and can be charged very quickly. It will need around 90 kW to cruise at 9 knots.

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