I have written before about the European decision to get 20% of energy from renewable sources by 2020. The former chief scientist of te UK, and prominent global warmist, agrees with my opinion:

http://news.bbc.co.uk/2/hi/uk_news/7596214.stm

Notice the ridiculous statement by the CEO of the British Wind Power Association that the wind energy is "free." This is a ridiculous assertion because an enormous amount of capital is required to manufacture and install the wind turbines and electric transmission lines necessary to harness and distribute the wind energy. These assets occupy a significant amount of land which requires some expense to acquire. It also costs money to maintain those assets, and those assets have a limited life and have to be replaced after 15 or 20 years. Finally, the wind doesn't blow all of the time, so backup power sources are necessary to ensure no interruption of service. Those costs must be apportioned over the wind power delivered. Thus, even though the wind is "free" the electric power produced by wind farms is not. It is by no means certain that wind power will be less expensive than sources using fossil fuel or nuclear reactors. Even at the current prices of fuel, wind power is more expensive, and, at present, no power grid has enough capacity based on wind to have to have really addressed the back-up capacity issue.