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<br />Level 2-3 wind condition. These conditions are generalized on a state level. Studies at a site specific <br />level are required to determine the true wind condition and suitability of a WECS. <br /> <br />An area within the Zone 4 classification in Minnesota known as the Buffalo Ridge is commonly <br />associated with high quality conditions for WECS units. This area is in southwestern Minnesota and is <br />the location of several medium and utility-scale WECS units. <br /> <br />~=~'"' ~ <br /> <br /> <br />ia Vertical extrapolation of wind speed based on tne11l powerlaw. <br />ibMean wind speed is based on Rayleigh speed distribution ofequivalenl mean <br />iwind power densfty. IMndspeed is for standard sea-level condftions. To <br />! maintain the same power densfty, speed increases3%f1 000 m (5%15000 ft) <br />!eleValion. <br />i 'Note: Each Wind power class should span two power densfties. For example, <br />iIMnd Power Class = 3 represents the IMnd Power Densfty range belween150 <br />iW1m2. and 200 Wim2. The offset cells in the first columnallempt to musltatethis <br /> <br />I concept..................... .... ....... ..._..........._..........) <br />