After a retrofit the PSV Viking Princess owned by Norwegian offshore operator Eidesvik can now operate as a hybrid vessel reducing fuel use by around one tonne per day.
Originally powered by a pair each of Wärtsilä 6L34DF and 6L20DF driven Alconza gensets, one of the smaller gensets has been replaced by a Wärtsilä/Corvus energy storage system connected to a DC-Hub. This energy solution allows the shipowner to reduce the operating costs, fuel consumption and emissions associated with the previous generator that is no longer needed.
According to Asbjørn Halsebakke, General Manager Norway, Yaskawa Environmental Energy / The Switch, this demonstrates a clear path forward for an industry where cost and sustainability are key. “Eidesvik has a long history of success with solutions from Yaskawa Environmental Energy / The Switch. These systems are currently on numerous vessels within the fleet, and Eidesvik was keen to invest in this trailblazing technology. The fact that this was the first time such a solution has ever been approved by DNV GL gave them even greater peace of mind.”
Halsebakke added, “We believe this is the future of shipping.” The DC-Hub is simple, reliable, robust and very cost effective. It allows vessel generators to run at optimal efficiency, with batteries taking the strain of any necessary load changes. This significantly reduces fuel consumption – and therefore operational cost and environmental impact.”
The delivery schedule for the installation was extremely tight, with only 14 weeks from initial discussions to completion. Normally, a delivery of this scale may be expected to take between four and six months. The system was installed at Westcon Yards in Ølensvåg, Norway.
The Switch technology forms a key part of a wider energy storage solution offered by Wärtsilä. Yaskawa Environmental Energy / The Switch Norway, Wärtsilä and Eidesvik are all members of the NCE Maritime CleanTech cluster, which is focused on improving energy efficiency and environmental performance within the shipping industry worldwide.
Eidesvik has a reputation for pioneering technology having been one of the first operators to install DF engines and a fuel cell on board its PSV Viking Lady. The same vessel was also the first in the company’s fleet to have a battery energy storage system installed.