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Maersk Supply Service and Ørsted to test charging buoy

By: Tom Russell 28/09/2020 Ørsted

General Vessels Windfarms

Maersk Supply Service A/S and Ørsted have formed a partnership to test a charging buoy that can bring green electricity to offshore wind farm service vessels and potentially to a wide range of maritime vessels. The buoy can be used to charge the smaller battery- or hybrid-electrical vessels and to supply power to larger vessels, enabling them to turn off their engines when laying idle.

The proto-type buoy has been developed by Maersk Supply Service while Ørsted is responsible for the buoy's integration with the electrical grid at the offshore wind farm. The charging buoy will be tested in the second half of 2021, where it will supply overnight power to one of Ørsted's service vessels.

Upon technical validation and commercial ramp up, the electrical charging buoy has potential to reduce emissions for the maritime industry. This will happen through displacing fuel consumed by enabling inactive vessels to turn engines off and replace energy consumption and charge batteries with renewable electricity. Within five years of global operation, Maersk Supply Service claims it could remove 5.5 million tons of CO2, additionally avoiding particulate matter, NOx, and Sox.

Ørsted intends to make any intellectual property generated in designing the integration of the buoy into the offshore wind asset publicly available to maximise the uptake potential of this carbon reduction innovation across the offshore wind sector.

The charging buoy is applicable as a mooring point outside ports, in offshore wind farms, and near other offshore installations. Additionally, it could help limit the increasing vessel congestions and remove air pollution in port areas.

"The charging buoy tackles a multitude of problems; lower emissions, offering a safe mooring point for vessels, better power efficiency and eliminating engine noise. This is also a solution that can be implemented on a global scale, and one that can be adapted as the maritime industry moves towards hybridisation and electrification," says Jonas Munch Agerskov, Managing Director for Offshore Renewables at Maersk Supply Service.

"Ørsted has set the ambitious target of having carbon neutral operations in 2025, which includes the operations of our offshore wind farms. Technical and commercial innovation is central to Ørsted's ability to provide real, tangible solutions to achieve our operational ambitions - and we need our partners' support. We are happy to team up with Maersk Supply Service to test this innovative charging buoy, which brings us a step closer to creating a world that runs entirely on green energy," says Mark Porter, Senior Vice President and Head of Operations at Ørsted Offshore.

For the demonstration phase of the project, Maersk Supply Service has received one of the largest EUDP grants (Energy Technology Development and Demonstration Programme, under the Danish Energy Agency) in 2020 supporting with DKK 22 million to the engineering and demonstration of the power buoy. The Danish Maritime Fund has provided initial support to conceptualise the project.

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Maersk Supply Service and Ørsted to test charging buoy

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