"If we told you that a free-flying kite could provide enough energy to power your house, you might consider us crazy. How about all the homes on your block, or even an entire city? Scientists at Delft University of Technology in the Netherlands recently tested just such a technology, tethering a 10 square meter kite to a generator to produce 10 kilowatts of power (enough energy for 10 homes). They are currently planning to scale the experiment with a 50 kilowatt kite and a 100 megawatt array called the Laddermill that could potentially power 100,000 homes!" -
Inhabitat.com