New wind farm in Minnesota: 150 MW capacity, 62 turbines, priced at 100% efficiency. Promoters expect 40% efficiency. Is 40% efficiency likely? One of the best wind farms in the US is near Baker, MT (USA), operated by MDU, and boasts an efficiency of 42%.
It's been my experience that most wind farms run about 30% efficient. So, we'll see.
More background on this story when it was is its planning stages can be found here.
North Dakota is looking at regulating such wind farms.