Navantia lands new-look jacket job for Danish offshore pilot
Spanish contractor Navantia will build a quartet of next-generation jackets for the DKr300m ($44.5m) Nissum Bredning offshore wind demonstration project in the Danish North Sea, following a contract award from Siemens.
The steel three-legged design foundations will serve as the base for a concept that knits together the German engineering giant’s ultra-large 7MW SWT-7.0-154 turbine with an innovative concrete transition piece, and has built-in high-voltage cabling, transformers and switch-gear.
Navantia will fabricate the jackets for the 28MW project with partner Windar, with which it has worked on a series of foundation orders for developments including Iberdrola’s 350MW Wikinger and 1.7GW East Anglia 1 (EA1) wind farms, and Statoil’s 30MW Buchan Deep floating array.
Siemens' joined-up thinking to cut offshore wind costsRead more
Delivery of the Nissum Bredning order, being handled in parallel with construction of 42 jackets for EA1 at the Fene facility in northwestern Spain, is slated for mid-year.
Nissum Bredning, located in 2.6 metres of water in a fjord close to Thyborøn, is being developed by Nissum Bredning Vindmøllelaug I/S (55%) and local utility Jysk Energi (45%), with support from the Danish Ministry of Energy.
The project, which will use a piled-in version of the integrated wind power station design Siemens expects to evolve into a concept with suction bucket bases, is “regarded as an excellent opportunity to test, in a controlled and small-scale environment, a number of new key technologies in the field of offshore wind”, says a Navantia spokeswoman.
"This is the fourth contract and third prime client of Navantia, in less than two years, and reinforces our position as a reference manufacturer in the sector," she adds. "This new contract also opens the possibility to be leader in new technologies and innovation."
Siemens calculates that its all-in-one concept could pare down the cost of offshore wind projects in water depths of 40-55 metres by as much as 40%.