Solar Power has been the fastest growing energy source in the last decade showing a compounded annual growth of over 50%.In 2010 alone,solar energy demand grew by almost 150% beating the most optimistic forecasts as costs kept on declining for this renewable energy source.While Solar Power continues to be one of the most expensive forms of energy,it is also the energy source where the costs are declining rapidly.However detractors of this alternative energy source keep pointing to its drawbacks.Note the Disadvantages of Solar Power are far overpowered by the Pros of Solar Energy.However the drawbacks of Solar Power do exist.Here are the Disadvantages of Solar Power .