Wind Plant Performance with Age in the United States

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June 9, 2020 2:00PM to 2:30PM EDT

To accurately predict lifetime energy output for wind plants, one must account for performance changes over time. A number of studies have investigated the lifetime performance of wind plants in several European countries, showing measurable declines in performance as plants age. However, the results vary by country and involve differing vintages of plants. This research is the first to quantify performance with age across the U.S. wind fleet, and is based on analyzing the generation records and wind resources of over 900 wind projects. On average, the U.S. fleet saw performance declines that were similar to those found in Europe. However, a key finding was that newer plants (those less than 10 years of age) show significantly less performance decline compared to the performance of older plants during their first 10 years of operation.

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