I'm considering putting up a small wind farm on my roof since I live alongside a long ridgeline and get consistent strong breezes. Peak output is 400w/turbine, and the grid will buy it back.

Just a hint for those of you considering wind, solar, etc. power, charging a battery and messing around with all that wiring actually reduces efficiency, it's better to hook up an inverter and run your setup directly back to the grid so your net power consumption drops.

And don't forget to get an emergency shutoff and tag your telephone pole that you have a generator! Otherwise the poor linesman coming to save you from a power outage gets zapped.