Sounds great but video talks about flying 150m² kites up to an altitude of 2.5km - not many places that you could do that safely I suspect - sounds like a good remote area generator - ie. remote Aust or Africa perhaps. Can't see masses of these being deployed in Europe!
Interesting talk on sasme subject:
www.ted.com/talks/saul_griffith_high_altitude_wind_energy_from_kites?language=en
