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Evaluation of global wind power Cristina L. Archer and Mark Z. Jacobson
 

Summary: Evaluation of global wind power
Cristina L. Archer and Mark Z. Jacobson
Department of Civil and Environmental Engineering, Stanford University, Stanford, California, USA
Received 20 September 2004; revised 14 March 2005; accepted 29 March 2005; published 30 June 2005.
[1] The goal of this study is to quantify the world's wind power potential for the first time
from data. Wind speeds are calculated at 80 m, the hub height of modern, 77-m diameter,
1500 kW turbines. Since relatively few observations are available at 80 m, the Least
Square extrapolation technique is utilized and revised here to obtain estimates of wind
speeds at 80 m given observed wind speeds at 10 m (widely available) and a network of
sounding stations. Tower data from the Kennedy Space Center (Florida) were used to
validate the results. Globally, $13% of all reporting stations experience annual mean wind
speeds ! 6.9 m/s at 80 m (i.e., wind power class 3 or greater) and can therefore be
considered suitable for low-cost wind power generation. This estimate is believed to be
conservative. Of all continents, North America has the largest number of stations in
class ! 3 (453), and Antarctica has the largest percent (60%). Areas with great
potential are found in northern Europe along the North Sea, the southern tip of the
South American continent, the island of Tasmania in Australia, the Great Lakes region,
and the northeastern and northwestern coasts of North America. The global average
10-m wind speed over the ocean from measurements is 6.64 m/s (class 6); that over
land is 3.28 m/s (class 1). The calculated 80-m values are 8.60 m/s (class 6) and

  

Source: Archer, Cristina Lozej - Department of Civil and Environmental Engineering, Stanford University

 

Collections: Geosciences; Renewable Energy