Many city councils are today looking for ways to reduce emission of CO2 and NOX in their cities. Traffic is the main source and, as many cities are built close to waterways, there is an opportunity to use ferries or boats for public transport.
A typical ferry with a 250 kW diesel engine and 1800 hours runtime per year will consume 120 m³ of diesel, which is equivalent to 1200 MWh. The emission per year will be in the range of 300 tons of CO2, 3 tons of NOX and 150 kg of particles.
A corresponding electric driven ferry will have no emission and the consumed energy will be about 500 MWh. The energy efficiency is 90% compared to 28-35% for a diesel engine.