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Narrow_Competition41 t1_j66feiy wrote

It's greatest during the transition from night to day and day to night, notwithstanding any kind of atmospheric disturbance like a storm. Basically it has to do with the sun heating the surface during the morning hrs, and during the evening hrs the surface releasing that heat. Keep in mind air aloft, where the turbine blades are (~300ft) situated, is always more active than at the surface level.

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aztronut t1_j6kdc2v wrote

The Sun heats up more of the atmosphere when the incoming rays are tangent to the surface, such as at the terminators at twilight, than when the incidence is normal to the surface, and it is also normal to the atmosphere. This extra energy in the atmosphere at twilight typically results in greater wind speeds.

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