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Sometimes the power companies will only allow them to produce so much power, so the wind farm is ordered to cut production.
Being shut down for too high of wind, well it will have to be some serious wind. I think the cut off for GE 2.5 MW turbines is around 24-28 m/s. Don't remember the exact number off the top of my head right now.
As far as killing birds, every sight I have ever worked, more birds were killed on my way to work then I have ever seen on the ground near any wind turbine. The sight I am working now in Arlington, OR, they had a crew of "bird people" who did a kind of FOD walk down at every tower looking for dead birds. I wish I would have got the total numbers but rumor has it, they didn't find too many. I have seen one dead bird from a wind turbine after 3 years in the industry. Most dead birds on sight are stuck in the grille of my work truck or dead on the road on the way to work.
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Chris
'75 911s Targa
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