The amount of energy produced by a turbine depends on the amount of wind that is blowing. Stronger winds produce more power. Southern Alberta is currently seen as a prime location for wind generation. Some of the best windy sites are usually remote from cities. Generally, very little land is required for a single turbine.
Wind farms do compete with other land uses.
The land surrounding turbines can be reclaimed, however, and used for agriculture or grazing so it is possible to accommodate more than one land use goal. Many places in Europe use offshore sites for turbines to ensure that no land area is lost to wind power development. Wind power raises some other concerns. Some people think they are unsightly and make too much noise. Wind farms are usually located away from populated centres and studies have shown that they do not cause significant noise disturbance even within 15 meters.