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Hub height offshore is less critical than offshore, with lower alphas (increase of speed with height).  There is far less turbulence offshore as well, meaning lower hub heights suffice.  Onshore one needs to go higher to reach stronger winds, and eliminate as much terrain-induced turbulence as possible.

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin
by Crazy Horse on Wed Feb 3rd, 2010 at 12:53:08 PM EST
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