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Engineering+Equality

Dong awarded £6M wind turbine foundation research fund

Dong Energy has announced that it has reached an agreement to collaborate on a £6M research project with the UK Carbon Trust under its Offshore Wind Accelerator Programme.

The project will involve a full scale demonstration of a new offshore wind turbine foundation called the Suction Bucket Jacket.

According to Dong Energy, technical innovations in key areas such as foundations are critical to meet its target to drive down costs of electricity by 40% for projects sanctioned in 2020.

The Suction Bucket Jacket was designed by Dong Energy and based on ideas from the SPT Offshore foundation, which was a finalist in a global competition run by the Carbon Trust to find lower cost foundation solutions.

If the demonstration is successful, it could be implemented in future commercial projects from 2017 – including the UK Round 3 projects.

The Suction Bucket Jacket combines jacket technology, consisting of welded tubular space frames, with suction buckets for anchoring the foundation firmly to the seabed.  The bucket foundation (suction caisson) is a well-known concept from the oil and gas industry, where it has been used for more than 30 years for oil platforms installed in the North Sea.

To minimise the time to market for the Suction Bucket Jacket, a full-scale prototype of the foundation will be demonstrated with a turbine as quickly as possible. This will allow the performance and stability to be verified. Dong Energy will demonstrate a full-scale Suction Bucket Jacket prototype at the offshore wind farm Borkum Riffgrund 1, where the sandy soil conditions are highly suitable for testing of this new concept. The foundation will be installed in 2014.

The prototype foundation will be installed with a state of the art measurement system that will provide essential data for the verification of the Suction Bucket Jacket concept. The collaboration will ensure that OWA participants Eon, Mainstream Renewable Power, Scottish Power Renewables, Statkraft and Statoil will get full insight into this data, and also have full visibility of the fabrication and installation of the new foundation design. This will allow them to evaluate whether to use it in the UK.

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