"Autonomous Airborne Wind Energy systems: accomplishments and challenges" , figure 15, reports an average value of 92 kW with a wind speed of 12 m/s, “during flight tests at the SkySails Power site in northern Germany in Spring 2021”
It is a good result, perhaps the best value for a tested AWES. But now it’s been almost three years and we don’t see what is next. This is not a good sign for the kite-reeling story which could end there, despite and perhaps because of favorable results.
In fact this could indicate that the mode of operation is too problematic, and for reasons which have been mentioned: discontinuity, probable rapid wear, management of the two phases…