We installed our solar System just over 2 years ago now, and the Wind Turbine was installed about 18 months ago.
Interestingly, the Solar system is stretching ahead with total kwh generated, despite the turbine spinning almost all the time.
However, adding the Turbine has made a huge difference, meaning we rarely need to run the generator at all.
In fact, the biggest problem with the Generator now isn't keeping it fueled, its keeping the starter battery charged as we don't use it often enough!
Being totally off the grid keeps the whole family warm and fuzzy inside.