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Opportunities and challenges in floating wind. Eirik Byklum – 27 November 2012. Foundations for floating wind. Spar buoys From 100 m water depth Hywind Demo (2009). Semi-submersibles From 40 m water depth WindFloat Demo (2011). Tension leg floaters From 60 m water depth
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Opportunities and challenges in floating wind Eirik Byklum – 27 November 2012
Foundations for floating wind Spar buoys From 100 m water depth HywindDemo (2009) Semi-submersibles From 40 m water depth WindFloat Demo (2011) Tension leg floaters From 60 m water depth Scale test under planning
Installation Bottom-fixed foundations • Offshore installation of foundation • Offshore installation of WTG • Offshore commisioning Floating foundations • Inshore assembly • Tow-out of complete unit • Large part of commisioning onshore
Environment Bottom-fixed foundations • Piling noise during installation • Often in sight from land • Larger seabed footprint Floating foundations • No piling needed • Can be placed out of sight • Smaller seabed footpring
Fabrication and technology Bottom-fixed foundations • Adaption needed for each unit • Proven technology Floating foundations • Standardized, mass production • Less mature technology, need pilots
Main cost reduction areas for floating wind Concept development • Upscaling • Design optimization • Mooring systems Cost-efficient fabrication • Fabrication friendly design • Efficient mass production Assembly and installation • Efficient installation vessels • Onshore assembly
Conclusions Large offshore wind resources located in deep waters Floating wind has advantages in terms of fabrication, installation and environment Currently higher CAPEX, but cost-competitive in the future
Eirik Byklum Technology Manager Floating Wind ebyk@statoil.com www.statoil.com