Below the cut-in speed at 12 km/hr power output is zero.The rated output speed is rarely reached in Europe.
The size of the circles indicates the wind power in a square 0.2o x 0.2o lat x long.
It can be seen that much of the wind power in France is in the north. Also in German much of the capacity is in the north as well as the north sea.
Example high wind days | Example low wind days |