Maersk to pilot a battery system to improve power production

Maersk ZigZag Global

A containerized 600 kWh marine battery system will be installed in a trial on board the Maersk Cape Town 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” explained Søren Toft, Maersk COO.

Propelling marine vessels with battery power alone is still years away from being a technically- and economically viable option for liners like Maersk. However the company is now deploying marine battery systems to improve the efficiency of a vessel’s onboard electrical systems such as the Maersk Cape Town’s generators. By maintaining the vessel’s auxiliary generators at a more optimal load, and avoiding running generators when not needed, Maersk believes it can reduce overall fuel consumption .

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 reportedly improve reliability at sea by ensuring continuous power supply.

The Maersk Cape Town includes a waste heat recovery system. This system 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.

The containerized battery energy storage system has been manufactured in Odense, Denmark by the system integrator and turnkey supplier Trident Maritime Systems. The battery system will be shortly transported to Singapore and installed on board the Maersk Cape Town.

The vessel is a Singapore-flagged 249m long container ship built in 2011 which sails between West Africa and East Asia. The first full voyage with the new system in place will take place next year and will be closely monitored to evaluate the performance of the system against the trial’s ambitions.

Source: Maersk

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