Wind energy is undoubtedly one of the cleanest forms of procuing wind  power from a renewable source .There is no pollution ,there is no burning of fossil fuels ,and unless something very drastic happens ,you don't run out of wind .But it's not lie you can erect a wind turbine anywhere and it will start generting power for you .There are lots of factors that can make an impact on the amount of wind  energy you can generte out of wind .

First wind

It being a wind turbine ,its outoput first most depends on the wind .Both the speed and force of the wind can be deciding factors .The more wind generators speed and force you have got ,the greater is the amount of power your wind turbine generates. Different regions have different wind speeds .You can gather the available wind dynamics data and using a model ,you can calculate how effective the wind of a particular region is going to be .

Second Height

Places of higher altitudes have more wind generators due to various atmospheric factors .Besides ,at higher places there is less obstruction from a surrounding hills ,trees and building .In fact the height is so important that alternative energy scientists and engineers and trying to use kites (due to the heights they can easily reach )to tap the wind power .

Thrid Rotor

The amount of energy produced by your wind turbine is proportional to the size of the rotor used .When all other factors have been taken into consideration .A bigger rotor certainly generators more power .Although it may cost more ,in the long run ,whenevery you are getting a wind turbine erected ,go for a big a rotor as possible .