The big problem with windmills on hills is they only stick about 5 or 6 there. Not enough to produce the quantity of power needed. Ther ought to be forests of them.
We have the M1 running 200 miles up the country M4 running a similar distance across. They are already eyesores. Build the wind turbines along the central reservations.
As long as they produce more energy in total than it costs to make them, they would be worth having.
Quack!
GtD.