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Be careful scaling up turbines from the current land based 2.5 to 3 MWs.  For a host of technological reasons, 4-5 MW turbines on land may not be in the cards.  The bigger the rotor diameter, the less efficient the turbine, offset some by capturing stronger winds at the top of the swept area, but still dealing with lower speed higher turbulence at the bottom of the blade circle.

Most offshore environments have far less turbulence than on land, allowing for a larger scale-up.

"Life shrinks or expands in proportion to one's courage." - Ana´s Nin

by Crazy Horse on Fri Jan 23rd, 2009 at 09:46:26 AM EST
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