In 2006 a company in San Francisco called Makani Power created a new way to harness energy. They uses kite like wind turbines connected to a tether. They used this because there are stronger winds higher in the atmosphere. I hope you enjoy your new kite door deck!
(This is the website I got the information from http://science.howstuffworks.com/engineering/civil/10-advancements-environmental-engineering10.htm)