Rolls-Royce has launched a lithium-ion based energy storage system for use on commercial ships.
The company has been delivering energy storage systems to customers since 2010, though the units themselves were previously supplied by a third party. Now Rolls-Royce offers SAVe Energy – a liquid-cooled battery system with a modular design that enables the product to be scaled according to a vessel’s power requirements.
SAVe Energy can be applied to several areas, including peak shaving, spinning reserve and battery-powered vessels. Combined with LNG or a diesel-powered engine in a hybrid solution, it will increase efficiency and reduce emissions, and can be coupled with most types of propulsion units.
In a hybrid arrangement, the system can handle the peak load, while the main power generators will relate to the average load and not reduce the propulsion unit’s thrusting capabilities.
“Battery systems have become a key component of our power and propulsions systems, and SAVe Energy is being introduced on many of the projects we are currently working on,” says Andreas Seth, Rolls-Royce, EVP Electrical, Automation and Control – Commercial Marine. “This includes the upgrade programme for Hurtigruten’s cruise ferries, the advanced fishing vessel recently ordered by Prestfjord and the ongoing retrofits of offshore support vessels.”
The system’s development was partly funded by the Norwegian Research Council of Norway’s ENERGIX program. The three ship owning companies – Color Line, Norled and the Norwegian Coastal Administration Shipping Company – have been partners in the project, ensuring that the energy storage system covers a wide variety of marine applications, including ferries, cruise vessels and multi-purpose vessels.
SAVe Energy was recently class approved by DNV GL, confirming that the technology is accepted for installation on all vessels classed by DNV GL.