Posters - WindEurope Annual Event 2024

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Come meet the poster presenters to ask them questions and discuss their work

We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in the academic community. We look forward to seeing you there!

PO282: Energy assessment of wind farm repowering: use of wind farm postconstruction vs preconstruction met masts

Nurseda Yildirium Yurusen, Project Engineer- Asset & Sustainability Performance, UL Solutions


Repowering is one of the current solutions proposed to optimize the use of wind-rich sites currently occupied by aging and underperforming wind farms. In 2022, a total of 454 MW of wind power capacity was decommissioned in Europe, a figure exceeding the initially expected decommissioning by threefold, as reported by WindEurope. Postponing such a significant phase of wind farm lifetime, unfortunately is a temporary solution, which comes with a burden of underperformance and limited use of the real wind resource potential. According to WindEurope's report "Wind energy in Europe - 2022 Statistics and the outlook for 2023-2027", the Iberian Peninsula is identified as a region occupied by aging and underperforming wind farms. Spain and Portugal have the oldest wind fleets considering average age of onshore wind turbines. WindEurope's analysis includes other countries in the study such as Germany, France, UK, Sweden, Turkey, Italy, Poland, and Netherlands. The market players in the Iberian Peninsula need repowering site evaluation analysis. While literature, standards, and industry recommendations offer detailed energy yield assessment procedures, these typically require measurements from a preconstruction met mast. Guidelines for energy yield assessment using operational data and verification turbines are relatively limited. For instance, TR6 is tailored for German projects and outlines the use of verification turbines, which can benefit from public databases for energy resource scaling indexes. To the best of our knowledge, such tools and guidelines are not available for the Mediterranean countries. Therefore, the need for in-house solutions, proper management of data collection campaigns and maximum utilization of historical data is becoming more evident. This paper will present guidance for wind farm owners with aging fleets who require estimates of energy production for the purpose of repowering.

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