Articles | Volume 11, issue 4
https://doi.org/10.5194/wes-11-1251-2026
https://doi.org/10.5194/wes-11-1251-2026
Research article
 | 
17 Apr 2026
Research article |  | 17 Apr 2026

Biases in preconstruction estimates of wind plant annual energy production

Rob Hammond and Eric Simley

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Cited articles

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Clifton, A., Smith, A., and Fields, M.: Wind Plant Preconstruction Energy Estimates, Current Practice and Opportunities, https://doi.org/10.2172/1248798, 2016. a, b, c, d, e, f
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Global Modeling and Assimilation Office (GMAO): MERRA-2 tavg1_2d_slv_Nx: 2d,1-Hourly,Time-Averaged,Single-Level,Assimilation,Single-Level Diagnostics V5.12.4, Goddard Earth Sciences Data and Information Services Center (GES DISC) [data set]https://doi.org/10.5067/VJAFPLI1CSIV, 2015. a
Hersbach, H., Bell, B., Berrisford, P., Biavati, G., Horányi, A., Muñoz Sabater, J., Nicolas, J., Peubey, C., Radu, R., Rozum, I., Schepers, D., Simmons, A., Soci, C., Dee, D., and Thépaut, J.-N.: ERA5 hourly data on single levels from 1940 to present, Copernicus Climate Change Service (C3S) Climate Data Store (CDS) [data set], https://doi.org/10.24381/cds.adbb2d47, 2018. a, b
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Estimating the energy production of a wind plant before construction is a historically difficult task. We build on prior research comparing the actual energy production of wind plants and their estimated energy production using owner-provided energy data. Similar to prior studies, we found an increasing bias of overestimating annual energy production. In general, estimates before construction are not conservative enough, suggesting room for improvements in the energy yield assessment process.
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