Rather about 800 kW during power phase, and perhaps 400 kW in average.
Reel-out power phase: 10 000 (m²) x 1.2 (air density) x 2/27 x 1000 (cubed wind speed of 10 m/s) = 888 kW. Or if you prefer: 10 000 x 1.2 /2 x 1000 x Betz limit/4 = 888 kW.
Looks too huge.
Sounds like the real.
Possibly a momentary peak resulting from starting and stopping the cable, combined with a big gust. Or just bad data.
Still hard to imagine anyone taking the idea of a power plant dependent on a repeated intermittent reversing cycle of reeling a cable seriously, considering the wear, and the losses.
This is indeed true for ALL reeling yo-yo systems, without any exception.
About their 2 MW, it is in the title of their brochure: “2MW Industrial Prototype of High
Altitude Wind Power System” (link then click on the concerned pdf), not data as such.
About 800 kW (for 10 000 m²) I was giving, I just corrected a previous message by removing 1000/2 because in this formula there is no division by 2. 800 kW, for 10 000 m² kite area half of the time at the best, is not a good value.
A design one might expect from an 8-year-old.