Maersk Supply Service has selected Wärtsilä’s containerised hybrid battery power and energy storage system to help the company reduce the carbon intensity of its fleet by 50 per cent before the end of this decade.
The order for the Wärtsilä HY system was placed in May 2021.The hybrid power conversion will be carried out on the Maersk Minder, a deep water anchor handling tug supply (AHTS) vessel during the early part of 2022. This is reportedly the world’s first AHTS hybrid battery conversion. The expectation is that the Wärtsilä HY system will decrease fuel consumption, and therefore also carbon emissions, by 15 per cent. The conversion will also reduce the vessel’s maintenance requirements while increasing operational performance.
The main system components are the hybrid drive, the energy storage system (ESS), and the transformer. Control and monitoring of the hybrid system is handled by the energy management system (EMS). Together, the system achieves peak shaving, spinning reserve, and significant efficiency improvement by running the engines at optimal load and using the batteries to absorb a large proportion of the load fluctuations.
Wärtsilä has also supplied the full engine room scope for this vessel, including the engines, thrusters, propeller arrangement, seals and bearings, as well as the integrated automation and planned maintenance systems.
“Maersk Supply Service is taking an active role in decarbonising the offshore support vessel sector. This requires both behavioural changes in the way we operate our vessels, as well as technological upgrades to our fleet. With this Wärtsilä HY Module we are taking a significant step on our path to further reduce the emissions from our diesel-electric vessels,” said Mark Handin, COO, Maersk Supply Service.