The photo is a wonderful visualization of the turbulence associated with wind generators. Is there data on the output power of successive generators back from the first? That, along with wind speed, would be a useful way to quantify wake effects. Also, might it be possible to maintain an angle of attack into the wind by the generator heads? If so that would allow the wake effect to be distributed more widely through the array.

As the Dutch said while fighting the Spanish: "It is not necessary to have hope in order to persevere."