The upfront cost of a wind turbine costs between $2,000 and $5,000 per killowatt of power capacity. With each killowatt of power capcity on average producing 1,489 kilowatthours (kWh) per year. An average house in America uses 10,791 kWh per year. This means the average cost to fully sustain your house off wind energy would be between $14,494 and $36,235. Of course this depends on many things like the average wind speed of the location, and the hight of the turbine. If you're in a location that meets the standards for a turbine it can be a very reliable investment for cheaper clean energy.
