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Windtech International July August 2024 issue

 

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The benchmarking platform for offshore wind farms, SPARTA (System Performance, Availability and Reliability Trend Analysis), is actively seeking to expand the system’s coverage to offshore wind farms beyond the UK as it marks its first full year of operations by publishing the SPARTA Portfolio Review 2016. The SPARTA Portfolio Review 2016 provides some key insights from the offshore wind farm performance and maintenance data gathered by the system, which covers 93.7% of the installed capacity of UK operational offshore wind.

These include:

  • Newer wind farms, further from shore, tend to have lower availability but higher capacity factors due to higher wind speeds and more modern turbines. As these new and larger wind farms mature, availability is expected to increase, leading to higher productivity levels.
  • In the summer months, areas with higher wind speeds give higher capacity factors, but this trend is reversed during autumn/winter as adverse weather conditions can mean more non-access days which will impact on a wind farm’s performance.
  • One of the primary drivers of non-access days is wave height, which creates opportunities for innovation in the next generation of crew transfer vessels.

The SPARTA platform aims to support improvements in the availability, reliability and performance of offshore wind assets, which will drive efficiency improvements, sector innovation, and investment and development. Operational data is collected across 76 key performance indicators  at system level (from blade to onshore substation), analysed and reported upon monthly, allowing individual performance to be benchmarked against the industry and acted upon by members.

 
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