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ELECTRICITY MARKET DEVELOPMENT


power can be collected from the grid and fed into the grid again just as quickly. Wind to Gas works for the grid operator Tennet, which requires this service for a stable electricity flow. The plant is a research project sponsored by Germany’s Federal Ministry of Economics. It is part of North Germany’s energy revolution 4.0 and one of the first large-scale grid stabilisation projects to be realised through an initiative by the federal government in the north of the country.


HIGH PERFORMANCE SYSTEM ADS-TEC’s new StoraXe battery power plant at its site in Brunsbüttel is a high- performance system with a capacity of 2.5MWh and a power output of 2.5MW. It can be completely charged and discharged within one hour and collects/ feeds large amounts of power from/into the grid in milliseconds. This provides a highly dynamic buffer in order to smooth energy peaks in the power supply network and to make the volatile generation of power from renewable


energy sources available at all times. To illustrate the scale of the storage plant, its capacity can be compared to that of about one million mobile phone batteries.


BATTERY PACKS UPGRADE FOR SIX OFFSHORE VESSELS


Rolls-Royce Commercial Marine has received an order to deliver a battery-powered energy system for six offshore vessels (PSV’s) which have been built by the yard Cosco Guangdong in China.


The delivery includes the Energy Storage Container System (ESSU); an upgrade of the existing Rolls-Royce ship design engineering package to match the new features; an upgrade of the Dynamic Positioning system (DP) and the ACON control system; and the new Rolls-Royce Energy Monitoring system, which will provide a complete overview of energy usage onboard.


JOINT VENTURE


Recently SEACOR Marine Holding announced that they have entered a Joint Venture with China Cosco Shipping Group. The new venture, SEACOSCO, has taken over eight offshore vessels which today are laid up by the yard.


The ships were ordered in 2013 and 2014 and their new owners have now decided to give six of the Rolls-Royce designed vessels an environmental upgrade, with an option for a further two. The ambition is to get them to work as fast as possible.


Full operational responsibility The company which has its head office in Louisiana, USA, will take full operational responsibility for the vessels and add them to their current fleet.


In a press release from the company earlier this month, John Gellert, President, Chief Executive Officer and Director, SEACOR, commented: “Combining a proven and advanced design, best in category accommodations and the innovative Rolls-Royce battery system, these vessels will be highly marketable across all major offshore energy regions worldwide.”


Asbjørn Skaro, Director Digital & Systems – Commercial Marine, Rolls-Royce, added: “We are looking forward to seeing these great vessels in operation and invested in for the future. These are advanced and modern ships and we strongly believe that the new energy system onboard will make them stand out from the crowd in the market. They will receive an upgrade that benefits both the environment and the economic efficiency of the ships.”


The vessels are of Rolls-Royce UT 771 WP design and have the characteristic Wave Piercing bow. The bow reduces wave resistance during rough conditions, resulting in a smoother ride than traditional designs, reduced fuel consumption and increased on-board safety.


In addition to having provided the ship design, Rolls-Royce also originally delivered an extensive package of ship equipment and systems to the vessels now being prepared for an environmental upgrade. This new order


for six offshore vessels – with an option for further two – follows deliveries or orders for battery systems for seven other vessels.


Rolls-Royce plc


Duncan McGilvray Editor Green Energy Publishing


WEBSITE www.wavetidalenergynetwork.co.uk 7


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