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Windtech International July August 2024 issue

 

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Optimisation of Foundation Schemes in Terms of Overall Economic Viability
Over 15% of the cost of an offshore wind turbine is usually attributable to the foundations. ImageFoundation installation and erection of the turbine constitutes one of the greatest areas of risk for an offshore development, because of the problems posed by working in an often difficult marine environment. Developing alternative foundation systems and addressing installation techniques that are less weather sensitive will have a direct and significant impact on the economic viability of offshore wind farm schemes. Results of studies for several offshore wind sites are presented in this article to demonstrate the savings that can be made by innovative thinking in terms of foundation design and construction. Relative costs of foundation systems are compared for differing seabed conditions, together with an assessment of the associated risks in terms of certainty of out-turn costs and schedule.

By Rachel Nicholls, Associate, Arup, USA
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