Viking Princess - Hybrid energy storage system | Wärtsilä

Viking Princess Battery-Hybrid System

After an engine failure, the Viking Princess replaced one generator set with a 600 kWh battery-hybrid system, developed with support from Wärtsilä Ship Design. The vessel’s workability was expected to be maintained or improved.

The system can provide about 1,500 kW of immediate power to the switchboard, compared with 1,200 kW from the replaced engine. According to the operator’s representative, the hybrid system cost no more than the fourth generator set it replaced, while providing additional benefits.

Reported Benefits

Savings depend on the vessel’s operating profile:

• Fuel: Approximately 10–15%, potentially more across the full operating profile.
• Emissions: Estimated at approximately 15–20%.
• Maintenance: Savings were reported at three times the original estimate. The batteries reduce engine running hours and help keep engines in their preferred 70–90% load range, reducing wear, extending maintenance intervals, and cutting parts replacement.

The operator says it will likely install battery-hybrid systems in its other vessels.

Source

The main source is an unnamed representative of the vessel’s operator, discussing the Viking Princess installation and results. Wärtsilä Ship Design is identified as the project collaborator.