The SkySails system tows the ship using large, dynamically flying towing kites, which generate up to 25 times more energy per square meter than conventional sails propulsion systems. This equals up to 2,000 kW of propulsion power in good wind conditions.

Experience has proven, one kilowatt hour of SkySails power costs just 6 US-cents, or only about half as much as one kilowatt hour from the main engine.