It is an ideal solution if you wish to reduce your dependency to EB grid power and save its cost. 
These domestic wind electric generators are light weight, compact, efficient and affordable. The device charges a 12V/24V battery with a power of 300 to 400 watts peak that will back up an average home’s lighting load.
Minimum wind velocity required is just 15 kms / hr. The weight of the system is just 8 kgs. with a blade dia of 1 meter.
As these units can work with the good wind available during non sunny period, a combination with Solar PV, which works with sunshine and a Roof Top Wind Power Generator, offer a complete solution to your non- conventional power back up.

When compared, the price of wind power is less than solar PV.