Wind is tricky depending on where you live. In the US there are surprisingly few places where smaller consumer-grade windmills make sense. Its been a while so this may be off, but I want to say you need a consistent wind of something like 10-15mph for most turbines to be of any real use

Even then, a 3000W turbine is usually best on something like a 30-50' tall pole

In certain areas wind can be efficient, in most areas (at least in the US) solar is much easier to deal with and more reliable