Wind energy is not in a concentrated form. This means that very large (and obtrusive) windmills are needed for large-scale power generation.
Although generally non-polluting, wind turbines can be noisy and interfere with TV and radio.
(Recent studies in Scotland and the Netherlands suggest that they give no problems to bird life. In California, the rare golden hawk (California's state symbol) sometimes use the stationary turbine blades as a hunting perch.)
