Welcome @derek-rewind
The curve you introduced as SkySails PN-14, wind speed at mast comes from figure 15 ofAutonomous Airborne Wind Energy Systems: Accomplishments and Challenges | Annual Reviews I quoted numerous times, for example here .
See also the second paper, figure 15, and page 20:
During a specific measuring campaign, an uninterrupted automated flight of 42 hours featuring day and night flight with an average power production of 62 kW has been achieved, in wind conditions varying between 4 m/s and 13 m/s (one minute average measured at 10m height) and estimated wind speeds at flight altitude of 6 m/s to 19m/s, showing the robustness or the implemented flight and power cycle automation algorithms and all system components at relevant load condition.
The measured power is based on the height of the mast (10 m), with an average wind speed of 12 m/s, among wind speeds varying “between 4 m/s and 13 m/s ”, and apparently not the “wind speeds at flight altitude of 6 m/s to 19 m/s ”.
As a result, if the curve shown by SkySails is the same one, then the real power figures are still significantly lower than what you are presenting, because the wind speed is measured at mast height rather than at 200-meter altitude, while the operations range from 200 to 400 meters. See here .
I also mentioned Makani M600 kinetic energy issue .
That said, you managed to summarize all the issues far better than I could have hoped to do myself.