Wind energy is a reusable resource of energy thus, is environmentally useful. As reusable, it doesn't give off any type of gas/heat energy harmful to the environment/ the ozone layer, it is considered an eco-friendly source of energy. But, as wind energy requires turbines, and turbines require wind, the wind and air pressure of the area matters as more the wind, more effective the wind energy. Wind energy and other reusable sources are often referred as economically expensive as installing the turbines over large plots of land is expensive and also reduces the area for home building etc, leaving more homeless people.