How does the accessibility of floating wind farm sites compare to existing fixed bottom sites?

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Abstract

Offshore wind is poised for huge growth in the coming years, the UK government has set targets of 40GW of offshore wind, including 1GW of floating wind, to be installed in the UK by 2030. Many proposed wind development sites are in deeper waters, farther from shore and will therefore need to be developed as floating wind sites. Developing sites in deeper waters provides access to higher, more consistent wind speeds, however this also means increased wave heights and tougher operating conditions. This makes the challenge of site accessibility critical to the goal of lowering the costs of offshore wind. Accessibility is the amount of time that vessels can safely access a given site. The objective of this study was to make a comparison of the accessibility of potential future floating wind sites to existing fixed bottom wind farm sites. Accessibility was calculated by developing Matlab code using established techniques and definitions found in the literature. A case study was then completed using sites in Scottish waters proposed for devel-opment as part of the Scotwind leasing plan. The majority of the Scotwind sites will need to be developed as floating wind sites due to the large water depths.. This study assesses the accessi-bility of the Scotwind leasing sites and compares them to a typical fixed bottom site. The study found that accessibility will be a greater challenge for floating farm wind sites compared to fixed bottom sites. Increased access to vessels that can operate in larger wave heights will likely be necessary to operate and maintain floating wind farm sites.
Original languageEnglish
Article number8946
Number of pages13
JournalEnergies
Volume15
Issue number23
DOIs
Publication statusPublished - 26 Nov 2022

Keywords

  • accessibility
  • floating wind
  • weather windows
  • O&M
  • wind energy

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