@dougselsam often says that the simplest way to achieve AWE has not been studied enough. He has some good points to argue with. There are also drawbacks.
Expected advantages:
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Both wind turbine and kite are proven technologies
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Simple and continuous operation
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Possibility of a high elevation angle
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Possibility of a higher density in a farm of unities (?)
Main drawbacks:
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High weight / power ratio
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Requirement of an electric tether
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Pendulum effect of the turbine swinging under the kite