Predicting real wind farm performance: interim results of UL’s ongoing backcast study for EU projects

Original Broadcast Date: 08 June 2019


Accurate pre-construction energy production estimates are vital for maintaining confidence in financial assessments of prospective wind projects. While uncertainty is always present, and it is normal to observe errors at individual projects, it is important that the average error, or bias, of pre-construction estimates for a representative sample of projects remain within an acceptable margin from zero. UL regularly verifies the accuracy of its energy production estimation methods against actual plant performance and assesses the causes of any discrepancies observed; the result is called a “backcast study”. Interim results from the most recent such study for European projects, which is ongoing, will be presented, with discussion of implications for UL’s energy-estimation methods.


Presenter: Michael Brower, PhD, Vice President, Renewables