Some of the most common questions about wind power revolve around the role of energy storage in integrating wind power with the electric grid. The reality is that, while several small-scale energy storage demonstration projects have been conducted, the U.S. was able to add over 8,500 MW of wind power to the grid in 2008 without adding any commercial-scale energy storage. Similarly, European countries like Denmark, Spain, Ireland, and Germany have successfully integrated very large amounts of wind energy without having to install new energy storage resources. In the U.S., numerous peer-reviewed studies have concluded that wind energy can provide 20% or more of our electricity without any need for energy storage.