Customers very often ask if they can run an entire building off one turbine.  The simple answer is often no, you would normally need both Solar and Wind for most installations unless you stayed in an area where the wind blows a constant 20 to 35KM/h all day and all night.
Here is a very handy website that shows the averages for you area (or the nearest regional Town/ City).
Here is the link to their main site, just put in your nearest city or town to get the results:
The example here we used Cape Town which we all know has loads of wind:
Another handy site to see live wind data is