How much power does a single windwill in a generally windy area generate?

Answer 1

Modern wind farms have turbines that can exceed 2 MW. The peak power production is limited to the rating of the unit, however it will produce significantly less during periods of low wind.

It really depends on the location and the wind patterns.

I know of one wind farm with dozens of "windmills" where the peak output never exceeded 90% of the sum of the nameplates of the individual turbines. Over the course of one year, it only produced 20% of its theoretical capacity. (i.e. 20% annual load factor)

I'm sure there are other locations where the wind is much more consistent and the load factor is higher.

Answer 2

The kinds of commercial wind generators you see in Calif, Texas, etc. are usually in the several 100 kW range, each. Some experimental very large wind generators can exceed 1 MegaWatt.

Small windmills on farms are capable of 10 kW on a good day.

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Answer 3

It depends on wind speed, number of blades and the turbine specs