The world needs a new source of energy, an unspillable source.

Questions on wind turbines?

I’m taking a class now and i’m a little confused on wind turbines, can anyone answer these for me?

1.If a wind turbine generates 4 million kW of electricity in a year, how many homes can be supported (electrically) by this amount of power?

2. Other than the size of the turbine, what does the amount of power produced depend upon?