Energy experts across the globe agree to the fact that renewable energy sources like wind energy, solar energy etc., are not sufficient to cater to our soaring energy requirements. In contrast to the views of these energy experts, the US DOE has some special plans for making the most out of renewable energy. Various activities conducted by the US DOE in this regard validates this fact. We can never know what the US Government has found so impressive & promising in these energy sources that are actually not capable of meeting our energy needs.
Wind energy may be considered a clean source of energy but it also has a set of drawbacks associated with it. Firstly, the energy obtained from wind turbines is fluctuating and so it cannot be considered a constant source of energy production. Also, there is considerable investment required for the installation of wind turbines that makes their operation uneconomical. Moreover, these wind farms pose safety threats for small size aircraft. The turbulence generated by wind turbines is a potential safety hazard for any aircraft flying near wind farms.
If you want to have more info on this subject, you need to get a book for the same. All crucial aspects related with the use of renewable energy have been explained in the alternative energy book "Renewable Energy: A Common Sense Energy Plan". Authored by Brad Linscott, this book covers all aspects related to wide-scale implementation of renewable energy like wind energy, solar energy etc. In this book, you will find a complete overview of the feasibility of large scale implementation of wind turbines that is hard to find in the wind turbines books available nowadays.