"The use of kites to capture wind energy and turn it into cost-effective 'green' electricity could be coming within reach, with EPSRC-funded research at Imperial College London playing an important role in making it possible.
Linked to a wider Innovate UK-funded project, a team at Imperial's Department of Aeronautics has put a kite-energy device through its paces using a wind tunnel that is part of the EPSRC-supported National Wind Tunnel Facility (NWTF).
The data produced has helped Glasgow-based Kite Power Systems (KPS) - a company aiming to bring kite energy to market by 2025 - to optimise its device to improve its efficiency and effectiveness. This is enabling the company to take the concept to the next stage of development."
There is more to the article in the link.
I have often thought about making a 'mini wind tunnel' with mini kites and using that as a display at various events. hmmmm.. the wheels are a turning!