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Wednesday, November 6, 2019 

A containerised 600 kWh marine battery system is to be installed in a trial on board the 'Maersk Cape Town' container ship in December 2019 to improve vessel performance and reliability while reducing CO2 emissions.

“This trial will provide a greater understanding of energy storage that will support Maersk in moving towards further electrification of its fleet and port terminals. Maersk will continue to facilitate, test, and develop low-carbon solutions on our journey to become carbon neutral by 2050,” said Søren Toft, Maersk COO.  

The battery system will be used to improve the efficiency of the vessel’s onboard electrical systems. By maintaining the vessel’s auxiliary generators at a more optimal load, and avoiding running generators when not needed, overall fuel consumption can be reduced. Additionally, it will support the generators with up to 1,800 kVA of power during rapid changes in electrical load such as thruster operation. This can reduce generator maintenance requirements. The battery system is also capable of providing redundant power, which can improve reliability at sea by ensuring continuous power supply.  

The Maersk Cape Town, like several other Maersk container ships, includes a waste heat recovery system, which will allows the batteries to charge by capturing electrical energy from heat that would otherwise have been lost out of the exhaust gas system for the main propulsion.  

“This exciting pilot – the first of its kind in the industry - will show the potential of battery technologies to keep improving the performance of our vessels while also reducing fuel consumption in our non-propulsion electrical systems,” said Ole Graa, Maersk Head of Fleet Technology. 

The containerised battery energy storage system has been manufactured in Odense, Denmark by Trident Maritime Systems, and will be transported to Singapore for installation on board the 249m, 2011-built Maersk Cape Town.  

The first full voyage with the new system in place will be closely monitored to evaluate the performance of the system against the trial’s ambitions. Maersk his working with the vessel’s classification society, ABS, to ensure safety and compliance.  

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