Took a different route home last week and noticed turbine blades spinning in the distance
. It appears to be a Skystream 3.7.
Skystream 3.7 Compact Wind Turbine and Wind Energy System
They are usually grid connected using a 2.4kw peak generator and a 12 foot down wind rotor.
I tried getting a couple shots of it yesterday on my way by. The first pic, you have to look close in the center to see it.