Conventional turbines are already near the Betz limit - no room for tripling their efficiency. There's potential to reduce the amount of material required (e.g

Conventional turbines are already near the Betz limit - no room for tripling their efficiency. There's potential to reduce the amount of material required (e.g. kite-based systems like those proposed by Makani), but this design doesn't look like it will deliver that. So something is probably wrong with the reporting here, to say nothing of the fluff written around the story (deploying 2.6M giant steel structures without causing any deaths?). So how the heck did it get 125 points?