Ever visit a Windfarm?

I've never visited a "wind farm" as such, but between here and a town I visit occasionally, there is a row of wind turbines along the ridge of a hill. They can be seen for a long ways off. It's neat to see them in operation, but I don't know how they're controlled. Some of them will be off while others will be turning. Since they're all in the same are and turned the same way, I think there must be some way of controlling them.

I passed one in Normanville many years ago on the way to a photo shoot. They do look impressive. The biggest opposition to them at the time was that they kill migrating birds & make the landscape look ugly! Once they were put up, the neighbours complained about the constant noise & not being able to sleep at night. They had tests done on their animals to show increased stress levels, poorer yields, failure to breed, etc. Windfarms are actually very wasteful & as you have seen, have huge engineering, transport & set-up costs as well as frequent & expensive ongoing maintenance. They are about half as efficient as solar farms for the same money, in individually optimized locations. They would be much better if the overall system of providing electricity from wind was engineered correctly. They were going to set up a huge vertical wind tunnel in Mildura, Victoria some years ago, but this was scrapped because the Return on Investment figures were unjustifiably poor. The latest breakthrough I have heard recently was discovered by the Japanese. They have successfully used a wind lens to tripple the output!