Why is energy storage onboard ships sustainable technology, and why should a ship owner use valuable space onboard for installing an ESS ?
The reason is simple: An ESS can help to simultaneously reduce fuel consumption, emissions, costs and the need for maintenance.
In short, you reduce emissions when you save fuel. Battery power helps optimize the energy consumption for both hybrid and fully electric system solutions.
A fully electric vessel saves 100% fuel. In addition you save most of the maintenance costs as a battery does not have moving parts.
A hybrid vessel with ESS can optimize the energy consumption by running the engines at optimal load, reduce the amount and the size of the engines, and store excess energy for use later.
Depending on the type of vessel and each vessels’ operational profile, an ESS is used for the following operations:
“Shave” the load peaks and operate engines at more optimum load
Give the engines a smoother operation by reducing load variations
Take a genset offline and use ESS for reserve power
Zero-emission and silent sailing:
Take all engines offline, burn no fuel, emit no exhaust, make no noise
Rapid load response:
Supply immediate power to large power consumers – especially in gas-hybrid systems where slow engine response can limit the available instant power.