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Are global wind power resource estimates overstated? 

Author:  | Environment, Meteorology, Technology, Videos

Abstract:
Estimates of the global wind power resource over land range from 56 to 400 TW. Most estimates have implicitly assumed that extraction of wind energy does not alter large-scale winds enough to significantly limit wind power production. Estimates that ignore the effect of wind turbine drag on local winds have assumed that wind power production of 2–4 W m⁻² can be sustained over large areas. New results from a mesoscale model suggest that wind power production is limited to about 1 W m⁻² at wind farm scales larger than about 100 km². We find that the mesoscale model results are quantitatively consistent with results from global models that simulated the climate response to much larger wind power capacities. Wind resource estimates that ignore the effect of wind turbines in slowing large-scale winds may therefore substantially overestimate the wind power resource.

doi:10.1088/1748-9326/8/1/015021
Environmental Research Letters 8 (2013) 015021

Download original document: “Are global wind power resource estimates overstated?

Video Abstract:

This material is the work of the author(s) indicated. Any opinions expressed in it are not necessarily those of National Wind Watch.

The copyright of this material resides with the author(s). As part of its noncommercial educational effort to present the environmental, social, scientific, and economic issues of large-scale wind power development to a global audience seeking such information, National Wind Watch endeavors to observe “fair use” as provided for in section 107 of U.S. Copyright Law and similar “fair dealing” provisions of the copyright laws of other nations. Queries e-mail.

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